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Entek IRD dataPAC 1250 User Manual

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  • Page 1 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
  • Page 2 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
  • Page 3 Data Collector User’s Guide Your manual for using the dataPAC Entek IRD International Corporation P/N 44853 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 4 Printed in the U.S.A. This Manual is supplied to the User under license, subject to recall by Entek IRD International Corporation at any time, and the Manual at all times remains the property of Entek IRD International Corporation. The information contained in this Manual is considered confidential.
  • Page 5 Entek IRD. If any sum is not paid by Customer when due, Entek IRD shall not be obligated to continue performance. If any amount is not paid when due, to the extent permitted by law a late fee of 1% per month (or any part thereof) shall be charged on past due amounts until paid.
  • Page 6 90 days from performance. With respect to performance related in any way to the passage of time to the year 2000 and beyond, or the occurrence of a leap year, Entek IRD does not make any representation or warranty; Entek IRD has issued a Year 2000 readiness disclosure statement, which is available to Customer upon request.
  • Page 7 Entek IRD as its attorney-in-fact to execute on Customer's behalf, any documents requested by Entek IRD which are necessary for attachment and perfection of its security interest. If Customer defaults, Entek IRD shall have all the rights of a secured creditor under the Uniform Commercial Code as enacted in Ohio.
  • Page 8 Terms and Conditions dataPAC Data Collector User’s Guide Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 9: Table Of Contents

    Contents Table of Contents 1. Introduction ........13 Overview of the dataPAC.
  • Page 10 Table of Contents Using the Memory Card Manager........58 Sorting Database Information .
  • Page 11 Collecting Off Route or Analysis Data ........106 Collecting Off Route Data with the dataPAC 1250 .....106 Collecting Off Route or Analysis Data with the dataPAC 1500.
  • Page 12 Table of Contents 5. Balancing Measurements ......161 Overview of Balancing Measurements ........162 Setting Up the Balancing Parameters .
  • Page 13 Table of Contents Setting Up FRF Measurements ........219 Connecting the Force Hammer .
  • Page 14 Table of Contents dataPAC Data Collector User’s Guide Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 15: Introduction

    Chapter 1 Introduction ® This chapter introduces you to using the dataPAC data collector. It also discusses the online help system and Customer Support. Overview of the dataPAC ..............14 Using the Manual ................. 14 Using the Online Help Systems ............16 Contacting Customer Support ..............

  • Page 16: Overview Of The Datapac

    Chapter 1 - Introduction Overview of the dataPAC The information in this manual applies to all three dataPAC models (1500, 1250, and 1000). Differences in the models are noted in the text. A predictive maintenance program helps you decide when equipment needs to be serviced or replaced.
  • Page 17 This manual is organized in chapters based on these tasks and topics: Chapter 1 “Introduction” contains an overview of the manual, the Online Help System, and Entek IRD Customer Support Services. Chapter 2 “The dataPAC” describes the dataPAC data collector in detail and covers the basic operations of the data collector.

  • Page 18: Using The Online Help Systems

    26 for more detailed information. Contacting Customer Support If you are under warranty or have an active ESAFE Agreement, Entek IRD provides a variety of Customer Support services. In the United States you can reach the Technical Support Hotline by dialing 1-800-ENTEKIRD (1-800-368-3547) Monday through Friday 8:00 a.m.–5:00 p.m.

  • Page 19: The Datapac

    Chapter 2 The dataPAC This chapter describes the dataPAC data collector in detail and covers the basic operations of the data collector. It includes the following sections: Overview of the dataPAC ..............18 Parts of the dataPAC ................18 dataPAC Battery Pack and Charger............ 22 dataPAC Windows and Screens ............

  • Page 20: Overview Of The Datapac

    Chapter 2 - The dataPAC Overview of the dataPAC The dataPAC is a portable data collector for predictive maintenance and machinery vibration diagnostics. It allows you to collect magnitude, spectrum, time, and phase data as well as process measurements. You can unload these measurements to your software program for analysis.

  • Page 21: Data Collector Diagram And Key Definitions

    Note: Some dataPAC models beep intermittently, sometimes at a very low volume, for no apparent reason. This beep is harmless but can be annoying. Contact Entek IRD Customer Support to arrange for servicing. If you send the unit in, Entek IRD can eliminate this beep. dataPAC User’s Guide Artisan Technology Group - Quality Instrumentation ...
  • Page 22 Chapter 2 - The dataPAC Main keys The round keys located above the display are the Main keys. The primary functions of these keys are: <STORE> - The store key causes the dataPAC to begin collecting data when you are using the Data Collection Program and you have selected a route.

  • Page 23: Data Collector Hardware Connectors

    Parts of the dataPAC <↑> - The up arrow has the following definitions: Moves to the previous menu selection. Moves to the previous field in a data entry screen. <SHIFT><↑> adjusts the screen contrast. <↓> - The down arrow has the following definitions: Moves to the next menu selection.

  • Page 24: Datapac Battery Pack And Charger

    Chapter 2 - The dataPAC dataPAC Battery Pack and Charger This section discusses checking and charging your battery. The dataPAC battery packs are located inside compartments in the back of the dataPAC. With a full charge, the batteries provide over eight hours of data collection time under normal conditions.

  • Page 25: Charging The Battery

    After charging, the battery pack powers the dataPAC for approximately 8 hours of normal operation. A battery eliminator and fast charging unit is available from Entek IRD as an optional accessory to the dataPAC. It allows you to condition the Ni-Cad batteries and provides complete discharge and recharge in about four hours.
  • Page 26 Chapter 2 - The dataPAC Program Manager The Program Manager appears when you power up the data collector for the first time. Each selection in the Program Manager allows you to complete different tasks, such as collecting data, defining setup, and reviewing data. Other programs vary depending on your model of dataPAC and which features you chose to activate.

  • Page 27: Using Edit Windows

    dataPAC Windows and Screens Balancing (optional for 1250, included in 1500) The Balancing program offers a direct method to balance your rotating machinery in one or two planes. Analysis (1500 only) The Analysis program allows you to observe a machine during start-up or coast-down to analyze the unusual vibration and resonance conditions that occur while you start up or shut down your machine.

  • Page 28: Using Help Windows

    Chapter 2 - The dataPAC To use Auto Adv. To change the current value in the entry box using Auto Advance, follow these steps. Press <SHIFT><F1> until Man. Adv. is display as the label for the softkey. Press the key closest to the softkey on the display. For example, the left <STORE> key is assigned to ABCD.
  • Page 29 dataPAC Windows and Screens These three types of windows also represent levels of organization. The Areas window lists the main subject areas which contain help information. To see the list of topics for a subject area, use the arrow keys to highlight the name of the area, then press <SELECT>...

  • Page 30: Basic Datapac Operations

    Chapter 2 - The dataPAC Topic information windows contain the highest level of detail. When you press <F3> (Backup Level), you move backward to the previous help window level. Basic dataPAC Operations This section covers many basic operations for the data collector, including powering up and down, changing your display contrast, initializing the data collector, and setting the date and time.

  • Page 31: Displaying The Operating System Version Number

    Basic dataPAC Operations Displaying the Operating System Version Number To view the operating system version number, power up the data collector by pressing the <ON/OFF> key. The Version number appears in the bar above the Program Manager every time you turn the data collector on. In the diagram, the version number is 5.00. Changing the Display Contrast Because the dataPAC display is sensitive to temperature changes, you might need to adjust the contrast after you start the instrument.

  • Page 32: Loading The Operating System With The Datapac Utility Program

    Chapter 2 - The dataPAC Caution: Restarting the dataPAC with this method removes the operating system from internal memory. If the system is stored on a memory card inside the dataPAC, the dataPAC restarts normally. Otherwise, you must reload the system. See “Loading the Operating System with the dataPAC Utility Program”...
  • Page 33 Loading the Operating System with the dataPAC Utility Program Start the dataPAC Utility by pointing to it on the Start menu. The dataPAC Utility appears. Select the correct dataPAC model under Collector. This example shows the dataPAC 1500 selected. Under Communications, choose Direct. Choose the Setup button.

  • Page 34: Using Other Features Of The Datapac Utility Program

    Chapter 2 - The dataPAC Restart the dataPAC by pressing <LIGHT> and the left and right arrows together. The dataPAC goes through a cold start routine. Choose Load dataPAC Image to load the operating system to the dataPAC. A progress bar appears until the task is complete. Note: The operating system loads to the internal memory with this procedure.
  • Page 35 Loading the Operating System with the dataPAC Utility Program Choose List Security Keys to see a list of available security keys, as shown below. To create or remove an area Areas are directories used to store and organize dataPAC files on your computer. You use areas during remote transfer.
  • Page 36 Chapter 2 - The dataPAC Select the correct dataPAC model under Collector. This example shows the dataPAC 1500 selected. To create a new area, choose Create New Area. Type the name of the area in the box and choose OK to create. To delete an area, select the name from the Area list.
  • Page 37 Loading the Operating System with the dataPAC Utility Program Select the name of an area from the Area list. Choose the Move Files button. The Move Files dialog box appears. Select the type of file under File Type. A Load Route file contains the information for data collection.

  • Page 38: Using The Datapac Setup Program

    Chapter 2 - The dataPAC Using the dataPAC Setup Program There are some options you can select before starting data collection. These options affect the measurement, the data collection process, and the data display. The dataPAC stores these options even when powered off. The setup program has seven categories that allow you to specify parameters for operation.
  • Page 39 Using the dataPAC Setup Program Switch to the desired setup category by pressing <F1> (Setup Category). The Setup Category window appears. Use the arrow keys to select the desired setup category and press <SELECT>. The selected window appears. This example shows the Data Collection Options. dataPAC User’s Guide Artisan Technology Group - Quality Instrumentation ...

  • Page 40: Setting Up Data Collection Options

    Chapter 2 - The dataPAC Setting Up Data Collection Options Use the arrow keys to highlight an option that you want to change and press <SELECT>. To return to the Program Manager window without closing the Setup program, press <SHIFT><MANAGER>. Auto Store Pressing <STORE>...
  • Page 41 Using the dataPAC Setup Program If Auto Advance is checked when you check Display TWF, Auto Advance will be automatically disabled. The two selections are incompatible because one tells the dataPAC to automatically go on to the next point, while the other tells it to stop and display the TWF. Speed Check The Speed Check option causes the dataPAC to determine if the machine speed at each point is within an acceptable range as specified by the host computer, manual entry, or...

  • Page 42: Setting Up Instrument Options

    Chapter 2 - The dataPAC Setting Up Instrument Options The Instrument Options windows allow you to set up basic functions of the dataPAC. You can save a group of settings as a named setup so that a user can load it for later use. Speaker Enable This option enables the dataPAC speaker so that it beeps each time you press a key.

  • Page 43: Setting Up Fft Display Options

    Using the dataPAC Setup Program Shut Off Time-Out (Minutes) This option specifies the number of minutes the dataPAC can remain idle before it shuts itself off to conserve battery power. If the instrument shuts off while you are changing setup options, it preserves the unsaved options.
  • Page 44 Chapter 2 - The dataPAC Band Overall Amp. Enable this option to display a calculated amplitude between the high and low cursors using a Root-Sum-Squared (RSS) calculation. Band RSS Amplitude is displayed only when Dual Cursors is selected. Averaging Information Enable this option to display the number of averages and type of averaging used to obtain the displayed data.

  • Page 45: Setting Up Time Waveform Options

    Using the dataPAC Setup Program Cursor Type Use this item to select the default cursor type on the FFT graph display. You can alternate between cursor modes at display time using a softkey. To select a default cursor mode, highlight the Cursor type and press <SELECT>. A pop-up menu appears.
  • Page 46 Chapter 2 - The dataPAC Time Waveform Options, Page 1 RMS Amplitude Enable this option to display an amplitude that is computed from the input signal using a Root-Mean-Squared (RMS) calculation on your time waveform. Peak Amplitude Enable this option to display a numerical presentation of the peak value of the input signal on your time waveform.
  • Page 47 Using the dataPAC Setup Program Delta Amplitude Enable this option to display a field showing the difference in amplitude between samples at each of the cursor locations. In calculating this delta, the dataPAC uses the sample with the greatest absolute magnitude at the cursor positions, since several values may occupy the same screen position of a cursor.

  • Page 48: Setting The Data Collector Date And Time

    Chapter 2 - The dataPAC Trigger Hold-Off Enable this option to include the length of delay (if any) between trigger events during multiple measurements. When making averaged or repetitive measurements you may want to pause before rearming the trigger, once a trigger has occurred. This field displays the length of the delay.
  • Page 49 Using the dataPAC Setup Program Press the <F1> to choose Setup Category. The Setup Category menu appears. Select Instrument Time by pressing the arrow keys, then press <SELECT>. The Instrument Time menu appears. Use this screen to set the date and time for the dataPAC’s internal clock. You can set the formats for the display as well.

  • Page 50: Installing And Defining Datapac Transducers

    Chapter 2 - The dataPAC To change the date, use the arrow keys to select the Year, Month, or Day field and press <SELECT>. The Edit Date / Time screen appears. Press the key nearest to the softkey on the display to enter the appropriate number. For more information on using Edit windows, see “Using Edit Windows”...
  • Page 51 Using the dataPAC Setup Program To install a transducer To install a transducer, follow these steps. Note: For the dataPAC 1000, you can only install a transducer after a route has been loaded onto the memory card currently installed in the dataPAC. Press <ON/OFF>...
  • Page 52 Chapter 2 - The dataPAC Press <F2> to load a transducer definition from memory. The transducer type will be either a generic type or a specified transducer, if one has been defined by the host software. Pressing < F2> opens the Install Xdcr window. Use the arrow keys to highlight a transducer definition in the Transducer Name box, and then press <SELECT>.
  • Page 53 Using the dataPAC Setup Program Transducer options The options for each field are described below. Mounted The transducer name is displayed next to this heading. Units The units that the transducer measures is displayed next to this heading. Sensitivity (mV/unit) Every transducer has a characteristic sensitivity, or calibration.
  • Page 54 Chapter 2 - The dataPAC To edit a transducer Press <F4> (Edit Xdcr) to edit the selected field. Use the arrow keys to select the field you want to make changes in. The fields are described below. Press <SELECT> to make a change. An Edit window appears. See “Using Edit Windows”...

  • Page 55: Using Memory Cards

    Using Memory Cards Using Memory Cards The dataPAC stores program information and collected data on memory cards. This section tells you how to install, remove, and maintain memory cards. It also contains information about the memory card batteries. The dataPAC uses PCMCIA cards (Personal Computer Memory Card International Association), which are an industry standard storage media designed to be a rugged replacement for floppy disks in portable computer systems.

  • Page 56: Write-Protecting A Memory Card

    The lithium battery supplied with the memory card should last about two years under normal use. These batteries are widely available or can be ordered from Entek IRD. Caution: Removing the battery from your memory card erases all data on the card. Before you can use the memory card again you must format and load the card using the dataPAC Utility program.

  • Page 57: Initializing The Data Collector Memory Cards

    Using Memory Cards To remove the battery, turn the card so the dataPAC logo side of the card faces you and move the lock switch to the right. Grasp the battery holder firmly and pull it away from the card. Pick up the battery by the edges. Caution: To avoid contamination, do not handle the flat sides of the battery.
  • Page 58 Chapter 2 - The dataPAC If you have a local PCMCIA card reader then the initialization can be performed more quickly in that drive. But the dataPAC Utility Program does not perform all the initialization steps automatically. First, you must format the card. The Utility program first checks to see that the card has been formatted.

  • Page 59: Memory Card Storage Capacity

    Using Memory Cards For a card drive attached to your computer, choose the letter of the drive and choose Local drive. When using a card drive, you must first format the card in the drive using Windows or DOS before you initialize it with the utility. You can not just erase files from the card to initialize it.

  • Page 60: Using The Memory Card Manager

    Chapter 2 - The dataPAC Using the Memory Card Manager The Memory Card Manager gives you information about the memory card installed in the dataPAC. It also allows you to delete routes, data and screen images to increase available space on the memory card. You can delete Data Collection and Analysis routes altogether, or you can just delete the data and keep the route.

  • Page 61: Sorting Database Information

    Temporary access allows you to test a feature for a specific period of time, after which the feature is automatically disabled. To get the feature permanently activated, simply contact Entek IRD. dataPAC User’s Guide Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 62: Adding A Feature With A Security Key

    Chapter 2 - The dataPAC If you want to add a function to your dataPAC, you must load the program through the security key. This program is called a software token. To add a function, you load a token. To remove a function, you unload a token. Once a token is loaded to a dataPAC, the security key no longer contains the token.
  • Page 63 Using Security Keys Security key messages Below is a list of messages related to security keys that may appear on your dataPAC. Message Explanation Security Key Type This message indicates that a temporary security key has reached xxx Expired its expiration date. The token is disabled and cannot be used. Security Key Type This message appears whenever the data collector is turned on xxx Expires in xx.x...
  • Page 64 Chapter 2 - The dataPAC dataPAC User’s Guide Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 65: Collecting And Reviewing Data

    Chapter 3 Collecting and Reviewing Data This chapter covers some of the tasks associated with collecting and reviewing data. For information about off route or analysis data collection, Chapter 4 “Off Route Analysis with the dataPAC.” This chapter includes the following sections: Overview of Collecting Data...............

  • Page 66: Overview Of Collecting Data

    Chapter 3 - Collecting and Reviewing Data Overview of Collecting Data This chapter describes how you collect data with the dataPAC. The dataPAC allows you to collect data for points in a list (route) and for unscheduled data (points not defined in a route).

  • Page 67: Connecting The Transducer To The Data Collector

    Preparing for Data Collection Connecting the Transducer to the Data Collector Connect the transducer to the connector at the top of the dataPAC. Transducer connector Insert the connector into the jack at the top of the dataPAC. The red dot on the connector should match the red dot on the jack.

  • Page 68: Ranging Measurements Manually

    Chapter 3 - Collecting and Reviewing Data Ranging Measurements Manually dataPAC 1500 only With the dataPAC 1500 V5, you can use the arrow buttons to manually range the measurement instead of relying on autoranging. When the dataPAC1500 begins ranging the measurement, press the up or down arrow button to adjust the ranging.
  • Page 69 Collecting Programmed Data Make sure that the DONE box in the window is highlighted, then press <SELECT> again. Note: The Select Route window does not appear if the Data Collection program is open and a route was already selected. To select a different route, press <DONE> to quit the Data Collection program, then start it again.

  • Page 70: Installing The Transducer For Programmed Data Collection

    Chapter 3 - Collecting and Reviewing Data Use the arrow keys to select Programmed Data Collection and press <SELECT>. The following screen appears. See “Setting Up the Program Parameters” on page 68 for setup instructions. 10. After the parameters are correctly set up, press <F5> (Run Program). See “Running the Program”...
  • Page 71 Collecting Programmed Data Switch to the desired setup category by pressing <F1> (Setup Category). The Setup Category window appears. Use the arrow keys to select Programmed Data Collection and press <SELECT>. The following screen appears. Use the arrow keys and <SELECT> button to choose the settings for programmed data collection.

  • Page 72: Running The Program

    Chapter 3 - Collecting and Reviewing Data Select Entire route each repetition to collect the entire route at each of the programmed collection times. Auto Advance is automatically enabled while the program is running. At each of the programmed collection times, the first point in the route is collected first. Then, the dataPAC goes through the entire route before turning off again.
  • Page 73 Collecting Programmed Data Press <SELECT> to save the setup. The following dialog box appears. Note: If you have not installed a transducer, the dataPAC prompts you to do so. See “Installing and Defining dataPAC Transducers” on page 48. Press <SELECT> to save the setup with the name in the dialog box. The following dialog box appears.
  • Page 74 Chapter 3 - Collecting and Reviewing Data The dialog box above informs you about the Auto Advance settings. Press <SELECT>. The following dialog box appears. The dialog box above informs you about the route name that will be used. Press <SELECT>.
  • Page 75 Collecting Programmed Data Press <SELECT> to start the program. The following dialog box appears. While the program is running, you cannot do anything else with the dataPAC. The dataPAC beeps three times to signal when each data cycle has been collected. When the program has completed all data cycles, the following dialog box appears.

  • Page 76: Reviewing Overall Data And Alarms Reports

    Chapter 3 - Collecting and Reviewing Data Reviewing Overall Data and Alarms Reports There are several functions available to view and analyze data in the dataPAC. This section discusses the available options for viewing and analyzing overall data, as well as alarms reports.
  • Page 77 Reviewing Overall Data and Alarms Reports After you select a route, the main Review Data window opens, as shown. Active skip level highlighted An ‘*’ indicates that this data was collect as off route Measurement number The measurement number is displayed at the bottom left corner of the window just above the status bar.
  • Page 78 Chapter 3 - Collecting and Reviewing Data To change the active skip level, press < F1> (Set Skip Level), then use the up and down arrow keys to set the skip level as desired. Press <F1> (Available Data) when you have selected the skip level.
  • Page 79 Reviewing Overall Data and Alarms Reports If you reach the beginning of the route after pressing <DEC> or <SHIFT><SKIP>, the instrument alerts you with the following message. To continue operation in the current route, highlight OK, and then press <SELECT>. This action causes the dataPAC to return to the Data Collection window and display the first point on the route.

  • Page 80: Reviewing Overall, Speed, & Alarms

    Chapter 3 - Collecting and Reviewing Data To modify the viewing window The <F3> (Magnify) softkey allows you to change the size of the viewing window. When the window is small, press <F3> (Magnify) to expand the size to fill the screen. When the window fills the screen, as shown below, press <F3>...

  • Page 81: Reviewing Bands And Alarms

    Reviewing Overall Data and Alarms Reports The band alarms are displayed as shown in the following diagram. Notice that the reduced view is selected. You can use the softkeys to change the display including Magnify/Reduce and Font Size. The threshold value or alarm value for the overall alarm is in the Threshold column. The alarm message is indicated in the next two columns.
  • Page 82 Chapter 3 - Collecting and Reviewing Data The band alarms are displayed as shown in the following diagram. Notice that the Magnify view is selected. You can use the softkeys to change the display including Magnify/Reduce and Font Size. The magnitude value for the band’s frequency range is in the first column. The frequency range is indicated in the next two columns.

  • Page 83: Reviewing Spectra Data

    Reviewing Spectra Data Reviewing Spectra Data The Available Data window shows the different types of data. If you collected that type of data for this point, you can view it by selecting the data type. Use the arrow keys to highlight Spectra (FFT), then press <SELECT>. The dataPAC displays a spectrum if it is available.

  • Page 84: Using Dual Cursors With A Spectrum

    Chapter 3 - Collecting and Reviewing Data There are several types of cursors available with the spectrum display: Single Cursor - Displays only the horizontal and vertical axis values of the cursor. Use the right and left arrow keys to move the frequency cursor and use the up and down arrow keys to move the amplitude cursor.
  • Page 85 Reviewing Spectra Data Below is a diagram of the Dual Cursors FFT Display. To move and switch active cursors With dual cursors, only one cursor can be moved at a time. The one that you can move is referred to as the active cursor. The active cursor appears as a dashed line, and the inactive cursor appears as a dotted line.

  • Page 86: Using Sideband Cursors With A Spectrum

    Chapter 3 - Collecting and Reviewing Data To magnify the area between dual cursors If there are at least three bins between the cursors, then you can press <F2> (Mag Cursor) to expand the display horizontally to show only those bins that lie between the upper and lower frequency limits established by the cursors.

  • Page 87: Using Harmonic Cursors With A Spectrum

    Reviewing Spectra Data To change the spacing between sidebands When <F1> shows (Move Cursor (S)) the sideband cursors are active. Pressing the arrow keys when the secondary cursors are active changes the spacing between the sidebands. The primary cursor does not move. Using Harmonic Cursors with a Spectrum Harmonic cursors allow you to view a fundamental (usually machine speed) cursor and up to ten harmonic cursors placed at harmonic intervals from the fundamental cursor.

  • Page 88: Using Diagnostic Frequency Cursors With A Spectrum

    Chapter 3 - Collecting and Reviewing Data Using Diagnostic Frequency Cursors with a Spectrum dataPAC 1500 V5 only This illustration shows the diagnostic frequency cursor selected in the dataPAC. To display the Diagnostic Frequency cursor, press <SHIFT><F1> (Cursor Type) and use the arrow keys to select Diagnostic Frequency.

  • Page 89: Changing The Spectrum Display

    Reviewing Spectra Data Changing the Spectrum Display To view a spectrum full screen and use some of the dataPAC’s analysis tools, press <F5> (Magnify) to open the spectrum in a full window. To magnify the entire spectrum display Press <SHIFT><F2> to open the Select Magnification menu. Use the arrow keys to highlight a selection, then press <SELECT>.
  • Page 90 Chapter 3 - Collecting and Reviewing Data Amplitude - Auto Scale (data) This option redraws the FFT graph with the vertical scale set to the highest peak in the FFT data set. This is the default mode of operation. Frequency - 10 X Speed This option adjusts the frequency scale to show only those spectral bins that represent frequencies that are less than 10 times the machine speed, or the collected Fmax, depending on which is less.
  • Page 91 Reviewing Spectra Data To display a grid To display a grid on the spectrum display, press <SHIFT><F3> (Grid). A grid appears as shown in the diagram below. To set different units Press <F3> (Set Units) to open the Set Unit Types menu. If you wish to change the current selection for both amplitude and frequency, you must press <F3>...
  • Page 92 Chapter 3 - Collecting and Reviewing Data Frequency - CPM This option displays frequency information in units of CPM as opposed to Hz, and machine speed in units of RPM instead of RPS. Frequency - Orders This option displays frequency information in units of orders which is defined to be the ratio of frequency to machine speed.

  • Page 93: Reviewing Waterfall Spectra Data

    Reviewing Waterfall Spectra Data The table shows the order, frequency, the RSS band amplitude, bins, and peak amplitude as defined below. Order - The order (frequency/speed) of the highest amplitude spectral line contained in the peak. Frequency - The frequency of the highest amplitude spectral bin contained in the peak. Band Ovrl.

  • Page 94: Changing The Viewing Angle Of A Waterfall Display

    Chapter 3 - Collecting and Reviewing Data Changing the Viewing Angle of a Waterfall Display Press <SHIFT><F1> (Viewing Angle) to modify the angle and elevation at which you view the data. After you press this softkey, new softkey options become available: <F1>...
  • Page 95 Reviewing Waterfall Spectra Data To blank out low level noise Press <SHIFT><F5> (Blanking Level) to eliminate the display of data below the specified percent of full scale. This is helpful in eliminating low level noise while displaying the significant peaks. You select the percent level from the list displayed. To change the number of FFTs displayed on one page Press <F2>...

  • Page 96: Reviewing Time Waveform Data

    Chapter 3 - Collecting and Reviewing Data To zoom the waterfall in and out around selected data sets The dataPAC can display 6 to 24 FFTs on the screen at one time (see Smaller/Larger page softkey above). When then number of FFTs stored is more than number displayed, the dataPAC selects FFTs evenly spaced among all the data sets and displays them.

  • Page 97: Using The Cursors On A Time Waveform Display

    Reviewing Time Waveform Data Use the arrow keys to highlight Time Waveform (TWF), then press <SELECT>. The dataPAC displays a time waveform if it is available. The dataPAC displays the measurement with the default cursor type. You set the default cursor type in the Setup Utility.

  • Page 98: Using Dual Cursors With Time Waveform

    Chapter 3 - Collecting and Reviewing Data Using Dual Cursors with Time Waveform Model 1500 Only The dual time cursors are useful for determining the time between two points on the time waveform or the time of any given sample relative to the trigger point. The low cursor is on the left, and the high cursor is on the right.

  • Page 99: Using Cyclic Cursors With Time Waveform

    Capturing and Printing dataPAC Screens To set the speed value from the time waveform Press <F4> (Set Speed) while dual cursors are displayed to set the machine speed value equal to the frequency represented by the time spacing between the high and low cursors. This value is stored and unloaded to your computer database with the time waveform data.

  • Page 100: Printing Datapac Screens Directly

    Chapter 3 - Collecting and Reviewing Data The screen capture utility has two parts: The screen capture function on the dataPAC. The dataPAC Screen Print and View Utility on the computer. In addition to the screen capture capability, you can directly print the screen as a graphic image with a parallel connection to a PCL-compatible printer.

  • Page 101: Transferring Images To Your Computer

    Capturing and Printing dataPAC Screens To capture screen images with the dataPAC Follow these steps to capture an image while it is displayed on the dataPAC screen: Press <SHIFT><DONE>. The words SAVE SCREEN are on the <DONE> key on some instruments. The dataPAC displays the following screen.
  • Page 102 Chapter 3 - Collecting and Reviewing Data Open the Screen View Utility. It should be located in the dataPAC directory on your hard drive. For example, C:\Program Files\EntekIRD\dataPAC\scrnview.exe. The utility screen appears. From the Setup menu, choose Unload Device. The computer displays the Setup Transfer Device dialog box. Use this dialog box to select the Transfer Device and Baud Rate for transfer.

  • Page 103: Viewing Captured Screens On Your Computer

    Capturing and Printing dataPAC Screens Under Transfer Device, select the COM port that the dataPAC is connected to, or the drive letter of the card drive. To transfer with a serial cable, select one of the COM options. To transfer with a PCMCIA drive, select the drive letter of that device.
  • Page 104 Chapter 3 - Collecting and Reviewing Data To select a single image for display If you are in multiple image mode, use the mouse to click on the image that you want to enlarge. Click again to return to multiple image mode. To print a single image While viewing multiple images, click the image that you want to print.

  • Page 105: Commands Available While Viewing Images

    Capturing and Printing dataPAC Screens Commands Available while Viewing Images Mouse commands Click an image once to enlarge it. Click an image again to reduce the image. Right-click an image to delete it. Deleting an image from the screen deletes it from the computer’s memory.
  • Page 106 Chapter 3 - Collecting and Reviewing Data dataPAC User’s Guide Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 107: Off Route Analysis With The Datapac

    Chapter 4 Off Route Analysis with the dataPAC This chapter describes using the dataPAC 1500 to collect off route and analysis measurements, such as overall, spectrum, time waveform, true zoom, phase/magnitude/speed, measurements, and start up/coast down measurements using waterfall/FFT or Bode/Nyquist. Collecting Off Route or Analysis Data..........

  • Page 108: Collecting Off Route Or Analysis Data

    You may also want to collect data for undefined points (points not in your database), or existing points that are not in your current list. Collecting Off Route Data with the dataPAC 1250 dataPAC 1250 In off route (or analysis) mode, you can take overall or spectral measurements, view them in real time, and store the data for later inspection and analysis.

  • Page 109: Ranging Measurements Manually

    Collecting Off Route or Analysis Data When you press <DONE> to exit the Analysis application, the follow screen appears. To save the analysis route with the name that appears under Route Name, choose Save. The number used is a random number that increments by one each time you save an analysis route.

  • Page 110: Setting Up And Collecting Off Route Overall Measurements

    Chapter 4 - Off Route Analysis with the dataPAC Setting Up and Collecting Off Route Overall Measurements This section discusses how to set up and collect off route magnitude (overall) measurements. To take an off route overall measurement, follow the steps below. Setting Up Off Route Overall Measurements After entering Off Route or Analysis mode, press <F4>...
  • Page 111 Setting Up and Collecting Off Route Overall Measurements Xdcr Native Units The Transducer Native Units parameter specifies the type of transducer connected to your dataPAC. The choice of this parameter controls the list of possible selections available for the Measurement Variable parameter. Meas.

  • Page 112: Collecting An Off Route Overall Measurement

    Chapter 4 - Off Route Analysis with the dataPAC Filter The Filter parameter selects the filter used when collecting the measurement. These filters are used for sound measurements. Your choices are: None - The dataPAC does not apply a filter to the measurement. ISO 2954 - The dataPAC applies an ISO 2954 filter to the measurement.

  • Page 113: Collecting Off Route Overall Sound Measurements

    You should install the “Generic Other” transducer to collect non-vibration measurements. To set up a temperature probe You can order a temperature probe from Entek IRD (P/N 37431). To use this device for off route data collection, you would set up a Generic Other transducer, and use the Static setting for the Measurement Variable.

  • Page 114: Setting Up And Collecting Off Route Spectrum Measurements

    Chapter 4 - Off Route Analysis with the dataPAC Setting Up and Collecting Off Route Spectrum Measurements This section discusses how to set up and collect unscheduled spectrum measurements. To take an off route spectrum measurement, follow the steps below. Setting Up Off Route Spectrum Measurements In the Program Manager, use the arrow keys to highlight the Data Collection icon, then press <SELECT>.
  • Page 115 Setting Up and Collecting Off Route Spectrum Measurements Use the up and down arrow keys to select Spectra / Waveform Measurement Parameters, then press <SELECT>. The dataPAC displays the setup parameters window for the selected measurement type. Note: If Time Waveform appears, press <F5> (Spectra Param.) to get to the Spectrum screen. When you change from time waveform to spectra, the time waveform parameters are automatically converted to the corresponding spectral parameters and vice versa.
  • Page 116 Chapter 4 - Off Route Analysis with the dataPAC Hardware Range The Hardware Range parameter is used to set a maximum range for this measurement. Selecting Auto Range causes the system to select an optimum range after you press <STORE>. Generally, it is recommended that you use Auto Range. However, if want to specify a range, you can select one from the list.
  • Page 117 Setting Up and Collecting Off Route Spectrum Measurements Trigger Control The Trigger Control parameter controls the slope type used for the trigger input. Your selections are: None - No trigger event is used for this measurement. Positive Slope, External - Defines the external trigger event to occur on a rising edge. Requires an external trigger signal, such as a tachometer.
  • Page 118 Chapter 4 - Off Route Analysis with the dataPAC Average Type This parameter selects the type of averaging for this measurement. Your selections are: Moving - The spectral measurements are averaged using equal weighting until the specified number of averages has been collected. The measurement process continues with the new data set being exponentially averaged with the previous data.

  • Page 119: Collecting An Off Route Spectrum Measurement

    Setting Up and Collecting Off Route Spectrum Measurements If the gear teeth are related by an integer value and the shaft with the trigger reference has the larger number of teeth, then and only then will the resulting phase angle have no ambiguity.
  • Page 120 9-PIN “D” connector goes to the “DATA I/O” plug on the dataPAC Entek IRD dataPAC strobe light Note: If you are using the dB+ model of the strobe, make sure you are in External mode. For more information about the Strobe dB+, see “Using the Strobe dB+” on page 165.

  • Page 121: Stopping, Saving, And Viewing An Off Route Spectrum Measurement

    Setting Up and Collecting Off Route Spectrum Measurements Set up the off route spectrum measurement. See “Setting Up and Collecting Off Route Spectrum Measurements” on page 112. Press <STORE> to begin collection. If you are in reduced screen mode, press <F2> (Magnify) to go to the magnified view.
  • Page 122 Chapter 4 - Off Route Analysis with the dataPAC To stop a measurement without saving it While collecting an off route spectrum measurement in the reduced view screen, you can press <F4> Stop Measurement. If you already pressed <F2> (Magnify) to view the spectrum full screen, go to the next step.

  • Page 123: Setting Up And Collecting Off Route Orders Measurements

    Setting Up and Collecting Off Route Orders Measurements To select other views (time waveform, split screen) While collecting an off route spectrum measurement, press <F2> (Magnify) to view the spectrum full screen. Press <F5> (Options) to open the Options menu. To exit the current window and display the reduced view window, select Reduce and press <SELECT>.
  • Page 124 Chapter 4 - Off Route Analysis with the dataPAC The orders tracking analysis is a measurement technique suitable for variable speed machines. It can sort out the signal components generated by a variable speed machine. Orders are essentially harmonics. But unlike harmonics, many interesting components are non-integer multiples of the first order or machine running speed.
  • Page 125 Setting Up and Collecting Off Route Orders Measurements Example 2 - A uniform sampling rate for a rotor running at variable speeds. When the machine speed increases, the period of the time waveform becomes shorter. But, the data samples were taken at a fixed sampling rate. Due to the speed increase, the number of samples in each cycle decreases.

  • Page 126: Setting Up Orders Based Measurements

    Chapter 4 - Off Route Analysis with the dataPAC It is obvious that the samples do not have uniform time spacing in this case. When the machine speed increases, the sampling rate also increases and the samples have less spacing in time.
  • Page 127 Setting Up and Collecting Off Route Orders Measurements To set up an off route spectrum measurement with Orders Based and no trigger, set up your measurement parameters as shown in the Spectra Measurement Parameters menu. For Orders Based, a fixed sampling rate is used and the tachometer is not required. Although the orders spectra for both Orders Based and Orders Track have the same display unit (orders) in the X axis, the data sampling and results are different for variable speed machines.

  • Page 128: Setting Up An Off Route Orders Track Spectrum Measurement

    Chapter 4 - Off Route Analysis with the dataPAC Here is an example of a zoomed in Orders Based spectrum measurement. Notice the “smearing” of the lines. Setting Up an Off Route Orders Track Spectrum Measurement The dataPAC supports the specification and collection of a spectrum with an Fmax defined in terms of number of orders for a varying machine speed.
  • Page 129 Setting Up and Collecting Off Route Orders Measurements To set up an off route spectrum measurement with Orders Track, set up your measurement parameters as shown in the Spectra Measurement Parameters menu. Here is an example of an Orders Track spectrum measurement. Here is an example of a zoomed in Orders Track measurement.

  • Page 130: Setting Up And Collecting Off Route Time Waveform Measurements

    Chapter 4 - Off Route Analysis with the dataPAC For Orders Track data collection, you are required to use a trigger to continually determine machine speed. Setting Up and Collecting Off Route Time Waveform Measurements dataPAC 1500 Only This section discusses how to set up and collect unscheduled time waveform measurements. To take an off route time waveform measurement, follow the steps below.
  • Page 131 Setting Up and Collecting Off Route Time Waveform Measurements Use the up and down arrow keys to select Spectra / Waveform Measurement Parameters, then press <SELECT>. The dataPAC displays the setup parameters window for the selected measurement type. Note: If the Spectra Parameters screen appears, press <F5> (TWF Parameters) to get to the Time Waveform screen.
  • Page 132 Chapter 4 - Off Route Analysis with the dataPAC Note: The scaling that is used to display the measured data is controlled with the display scaling parameter. Display Scaling The Display Scaling parameter controls the scale used to display the measured data on the vertical axis.Your choices are: Auto Scale - The display scale automatically adjusts to the measured data.
  • Page 133 Setting Up and Collecting Off Route Time Waveform Measurements Trigger Control The trigger control parameter controls the slope type used for the trigger input. Your selections are: None - No trigger event is used for this measurement. Positive Slope - Defines the trigger event to occur on a rising edge. Negative Slope - Defines the trigger event to occur on a falling edge.
  • Page 134 Chapter 4 - Off Route Analysis with the dataPAC Tach/Gear Box The Tach/Gear Box parameters are used to configure the dataPAC to measure information on a shaft that is inaccessible or “buried” in a gear box. Note: This option is not available if Trigger Control is set to None. Trigger Pulses/Revolution - Indicates how many trigger pulses occur for each revolution of the reference shaft.

  • Page 135: Collecting Off Route Time Waveform Measurements

    Setting Up and Collecting Off Route Time Waveform Measurements Collecting Off Route Time Waveform Measurements Press <STORE> to start the measurement. The dataPAC ranges and collects the data. Once the dataPAC collects the measurement, press <STORE> again to store the measurement.

  • Page 136: Setting Up And Collecting Off Route True Zoom Measurements

    Chapter 4 - Off Route Analysis with the dataPAC To set up an off route time waveform measurement with gSE collection, set up your measurement parameters as shown in the Time Waveform Measurement Parameters menu. Collect the measurement as you would any time waveform, making sure that your accelerometer can detect high frequencies.
  • Page 137 Setting Up and Collecting Off Route True Zoom Measurements Press <F4> (Meas Type) to display the Measurement Type selection window. Use the up and down arrow keys to select True-Zoom Measurement Parameters, then press <SELECT>. The dataPAC displays the setup parameters window for the selected measurement type.
  • Page 138 Chapter 4 - Off Route Analysis with the dataPAC Meas. Variable The Measurement Variable parameter allows you to choose how to measure the signal coming from the transducer. For example, if you have a velocity probe, you can measure either velocity or displacement. Unit Text The Unit Text parameter allows you to select the display units for this measurement.
  • Page 139 Setting Up and Collecting Off Route True Zoom Measurements Number Lines The number of lines parameter specifies the number of lines (bins) of resolution for the FFT spectra. The larger the number of lines, the better the frequency resolution of the measured data in the spectra.

  • Page 140: Collecting Off Route True Zoom Measurements

    Chapter 4 - Off Route Analysis with the dataPAC Collecting Off Route True Zoom Measurements Press <STORE> to start the measurement. The dataPAC ranges and collects the data. Once the dataPAC collects the measurement, press <STORE> again to store the measurement.
  • Page 141 Setting Up and Collecting Off Route Phase/Magnitude/Speed Press <F4> (Meas Type) to display the Measurement Type selection window. Use the up and down arrow keys to select Phase/Magnitude/Speed, then press <SELECT>. The dataPAC displays the setup parameters window for the selected measurement type.
  • Page 142 Chapter 4 - Off Route Analysis with the dataPAC Meas. Variable The Measurement Variable parameter allows you to choose how to measure the signal coming from the transducer. For example, if you have a velocity probe, you can measure either velocity or displacement. Unit Text The Unit Text parameter allows you to select the display units for this measurement.

  • Page 143: Collecting Off Route Phase/Magnitude/Speed Measurements

    Setting Up and Collecting Off Route Phase/Magnitude/Speed Trigger Control This parameter controls the slope type used for the trigger input. Your selections are: Positive Slope - Ext - Defines the trigger event to occur on a rising edge. Negative Slope - Ext - Defines the trigger event to occur on a falling edge. Leading Edge/Trailing Edge - Use this parameter to have the dataPAC 1500 automatically select the rising edge or the falling edge of the trigger mark.

  • Page 144: Using A Strobe To Collect Phase/Magnitude/Speed Measurements

    Chapter 4 - Off Route Analysis with the dataPAC Using a Strobe to Collect Phase/Magnitude/Speed Measurements dataPAC 1500 V5 only The dataPAC 1500 V5 allows you to use a strobe light to collect phase measurements so that you can compare two phase measurements, such as the opposite ends of a shaft. Measuring phase with a strobe is only meaningful if you have another phase measurement to compare it to.

  • Page 145: Setting Up Start-Up/Coast-Down Measurements

    Setting Up Start-Up/Coast-Down Measurements Setting Up Start-Up/Coast-Down Measurements dataPAC 1500 Only The dataPAC 1500 allows you to observe a machine during start-up or coast-down to analyze the unusual vibration and resonance conditions that occur as the machine speed changes. Start-up/coast-down measurements are used to investigate a machine’s behavior during either a start-up or a coast-down.
  • Page 146 Chapter 4 - Off Route Analysis with the dataPAC The selections depends upon the current selection in the Measurement Variable parameter. Note that this simply specifies the text that is used to label the measurement. The scaling for the measured data is automatically set based upon the selected Unit Text. RMS - Root Mean Square amplitude is the amplitude of a sine wave at the frequency of interest.
  • Page 147 Setting Up Start-Up/Coast-Down Measurements Spacing Press <SELECT> to control the spacing between collected spectra or between Phase/ Magnitude/Speed/Acceleration points. Speed-Linear - Collects data with uniform spacing between the two specified speed limits. Speed-Log - Collects data with logarithmic spacing between the two specified speed limits.
  • Page 148 Chapter 4 - Off Route Analysis with the dataPAC Window Press <SELECT> key in the Window box to specify the windowing function applied to the time waveform that is used to compute the spectra. Hanning - A general purpose window for use with random-type data. Hanning provides a good compromise between amplitude accuracy and frequency accuracy.
  • Page 149 Setting Up Start-Up/Coast-Down Measurements Trigger Type Press <SELECT> while in the Trigger Type box to select from a list of trigger types. None indicates that the machine speed is not to be measured. This is only possible for an FFT/Waterfall measurement. Positive Slope indicates that the machine speed is measured using the positive edge of the trigger signal as the phase reference.
  • Page 150 Chapter 4 - Off Route Analysis with the dataPAC Mode Press <SELECT> to toggle between Start-Up and Coast-Down. This changes the Speed field to reflect the beginning or end ranges for machine speed. Speed (RPM) Depending on whether you have selected Start-Up or Coast-Down, this lets you specify the beginning and ending RPM for the data set sampling.
  • Page 151 Setting Up Start-Up/Coast-Down Measurements Press the right arrow key to highlight the Auto Scale If Clipping option then press <SELECT> to enable it. If enabled, the hardware re-ranges if the signal amplitude exceeds the selected hardware range. Press <DONE> when complete. Note: Auto Scale if Clipping is most useful for machines that take a long time to start-up or coast- down.
  • Page 152 Chapter 4 - Off Route Analysis with the dataPAC Trigger Type Press <SELECT> while in the Trigger Type box to select from a list of trigger types. None indicates that the machine speed is not to be measured. This is only possible for an FFT/Waterfall measurement.

  • Page 153: Collecting And Analyzing Data Using Waterfall/Fft

    Setting Up Start-Up/Coast-Down Measurements Spacing Press <SELECT> to control the spacing between collected spectra or between Phase/ Magnitude/Speed/Acceleration points. Speed-Linear - Collects data with uniform spacing between the two specified speed limits. Speed-Log - Collects data with logarithmic spacing between the two specified speed limits.
  • Page 154 Chapter 4 - Off Route Analysis with the dataPAC Start the machine or stop the machine as needed. Press <STORE> to begin measurement. The dataPAC 1500 begins collecting start-up or coast-down data based on the parameters you entered. Once measurement is complete, the waterfall is displayed for all measurements made for the point.

  • Page 155: Collecting And Analyzing Data Using Bode/Nyquist

    Setting Up Start-Up/Coast-Down Measurements Collecting and Analyzing Data Using Bode/Nyquist The following procedure describes how to perform a typical Bode/Nyquist start-up or coast- down analysis. Connect the reference input device to the dataPAC 1500. Align the reference input device (photocell or laser tachometer) to capture shaft speed and relative phase. Attach a transducer to the bearing housing.
  • Page 156 Chapter 4 - Off Route Analysis with the dataPAC Once the measurement is complete, the display selected in Graph Type is shown. The following diagram is an example of a Bode plot This diagram is an example of a Nyquist plot. dataPAC User’s Guide Artisan Technology Group - Quality Instrumentation ...

  • Page 157: Methods For Measuring Machine Speed

    1500. There are other accessories besides the LASETACH® that can be used for a reference input, such as a photo cell accessory. All versions of the dataPAC 1500 software support this measurement type. The dataPAC 1250 does not have a reference input and does not support the phase-magnitude-speed measurement type.

  • Page 158: Orders Based/Orders Track

    165. Strobe Light You can drive a strobe light using the dataPAC 1250 or 1500 and the strobe accessory, which gives you an estimate of machine speed based on visually “freezing” the rotating equipment with the strobe. See “Driving a Strobe While Collecting an Off Route Spectrum”...

  • Page 159: Using An Internal Trigger Source To Collect Data

    Using an Internal Trigger Source to Collect Data Using an Internal Trigger Source to Collect Data dataPAC 1500 V5 Only There are several applications for using an internal trigger source to collect data. Imagine a stamping press. You want to collect vibration data just as the press stamps, which is considered to be transient data.

  • Page 160: Performing A Bump Test

    Chapter 4 - Off Route Analysis with the dataPAC Move the highlight to Trigger Control and choose one of the internal choices, either ↑ Slope - Int or ↓ Slope - Int. Set up the other parameters as needed. Press <STORE> to begin collecting data. The following screen appears. Press the arrow keys to set the trigger level.
  • Page 161 Using an Internal Trigger Source to Collect Data The bump test helps you predict the natural frequencies of the machine. However, it is not a quantitative test. It is just a quick and easy way to identify if natural frequencies are causing the vibration problem.
  • Page 162 Chapter 4 - Off Route Analysis with the dataPAC dataPAC User’s Guide Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 163: Balancing Measurements

    Chapter 5 Balancing Measurements This chapter describes balancing procedures and measurements you can take with the dataPAC coupled with a speed-measuring device such as a strobe light or laser tachometer. Overview of Balancing Measurements ..........162 Setting Up the Balancing Parameters ..........163 One Plane Balancing with a Strobe Light ..........

  • Page 164: Overview Of Balancing Measurements

    Note: This tool is available only with the dataPAC 1250 and 1500 models equipped with a speed- measuring device. Two plane balancing is an option available only with the dataPAC 1500.

  • Page 165: Setting Up The Balancing Parameters

    Setting Up the Balancing Parameters Setting Up the Balancing Parameters The following procedure describes the method used to set up the balancing parameters for the dataPAC. In general, you can follow the prompts that appear in the status line on the dataPAC.
  • Page 166 Chapter 5 - Balancing Measurements Planes To determine whether single-plane or two-plane balancing is required, a good rule-of-thumb is the rotor’s width-to-diameter (W/D) ratio. The W/D ratio is the width (excluding shaft length) of the combined rotors divided by their diameter. The following chart can be used to help determine whether to use one- or two-plane balancing.

  • Page 167: One Plane Balancing With A Strobe Light

    TACH ALT FPS/HZ FPM/RPM PHASE FUNCTION BATTERY TACH PHASE ENTEk IRD ÷2 PRESET FPM/FPS STORE VIEW The External triangle is on whenever the strobe is in the external mode. The external mode means an external signal, such as the dataPAC, is plugged into the external input jack. The FPM triangle is on when the display is displaying Flashes Per Minute.

  • Page 168: Measuring Speed With A Strobe

    Chapter 5 - Balancing Measurements Below the display are six buttons which control the operation of the stroboscope. There are three major operating modes for the strobe: Internal, External and Charging. In the Internal mode, the knob adjusts the flash rate from 30 to 14,000 Flashes Per Minute (FPM). In the External mode, an external signal from a remote sensor is used to trigger the flash and the knob has no effect.

  • Page 169: Taking The Initial Vibration Measurement

    9-PIN “D” connector goes to the “DATA I/ O” plug on the Entek IRD dataPAC dataPAC strobe light Attach a transducer to a bearing housing. When the machine is stopped, mark the rotor by making a mark on one rotor that serves as a reference when using the strobe light.
  • Page 170 Chapter 5 - Balancing Measurements Start a balancing session by pressing either <F2> or <F4>. To enter new balancing data, press <F4> (New Run) from the Balancing Options window. To continue a saved balancing session, press <F2> (Continue Loaded Run). The Balancing window opens. Select the correct transducer setting if necessary.
  • Page 171 One Plane Balancing with a Strobe Light Note: Vibration units and speed displayed match the system and frequency units selected in the dataPAC Instrument Options screen. See “Setting Up Instrument Options” on page 40. Select the correct vibration units by pressing <F5> (Vibration Units). Use the arrow keys to highlight the desired units and then press <SELECT>.
  • Page 172 Chapter 5 - Balancing Measurements 11. Approximate the machine speed with the dataPAC. You can do this either by entering the machine speed or by pressing Auto Speed, then fine tuning the flash rate. Press <SELECT> to open the Enter Machine Speed window. Enter the appropriate value.

  • Page 173: Adding The Trial Weight And Taking A Measurement

    One Plane Balancing with a Strobe Light 12. At this point you should check 1X. It is possible to think the strobe is set correctly when you are actually on a sub-harmonic of the RPM. To check, press <F4> (2 X Speed) to double the strobe flash rate.
  • Page 174 Chapter 5 - Balancing Measurements Enter the trial weight position. Use the edit window to enter the location of the trial weight on the rotor. If the machine has no vanes or blades, you should specify the trial weight location in degrees (0 - 359).

  • Page 175: Adding The Correction Weight And Taking A Residual Measurement

    One Plane Balancing with a Strobe Light Press <STORE> to take a trial weight measurement. Note: You may get a warning after applying the trial weight if the original 1X vector does not change significantly. If this happens, you are given the choice to Continue or Backup. You can Backup and add more weight if you want.
  • Page 176 Chapter 5 - Balancing Measurements With machines having multiple positions, the reference blade is 1. For 8 positions, correction weights may be at positions 1, 2, 3,... 8. The dataPAC automatically splits the required correction weights between two adjacent blades (vector splitting). reference position 1 mark...

  • Page 177: Two Plane Balancing With A Strobe Light

    Two Plane Balancing with a Strobe Light Two Plane Balancing with a Strobe Light This section discusses the procedure for balancing a machine in two planes using the dataPAC and an attached strobe light. Taking the Initial Vibration Measurement Start a balancing session by pressing either <F2> or <F4>. To enter new balancing data, press <F4>...
  • Page 178 Chapter 5 - Balancing Measurements Enter the number of positions on the rotor by pressing <F1> (Positions). The number of positions refers to the number of rotor components, such as blades on a fan. The Edit Positions window opens. Enter 0 for a rotor without vanes or blades, or enter the number of vanes or blades. When your entry is complete, press <DONE>...
  • Page 179 Two Plane Balancing with a Strobe Light Approximate the machine speed with the dataPAC. You can do this either by entering the machine speed or by pressing Auto Speed, then fine tuning the flash rate. From the Balancing window, press <SELECT> to open the Enter Machine Speed window.

  • Page 180: Adding The Trial Weight And Taking A Measurement In Plane 1

    Chapter 5 - Balancing Measurements 10. At this point you should check 1X. It is possible to think the strobe is set correctly when you are actually on a sub-harmonic of the RPM. To check, press <F4> (2 X Speed) to double the strobe flash rate.
  • Page 181 Two Plane Balancing with a Strobe Light With the Edit Trial Weight - Plane 1 window open, enter the magnitude of the trial weight you are about to attach to the rotor in the first plane. When your entry is complete, press <DONE>.
  • Page 182 Chapter 5 - Balancing Measurements Notice that after you enter the trial weight, the lower half of the dataPAC display indicates the initial vibration in both planes, as well as the trial weight just entered. The dataPAC updates the summary display as you compete each step of the balancing operation.

  • Page 183: Adding The Trial Weight And Taking A Measurement In Plane 2

    Two Plane Balancing with a Strobe Light Adding the Trial Weight and Taking a Measurement in Plane 2 Press <F1> (Continue) to enter the plane 2 trial weight and continue the balancing procedure. With the Edit Trial Weight - Plane 2 window open, enter the magnitude of the trial weight you are about to attach to the rotor in the second plane.

  • Page 184: Adding The Correction Weights And Taking A Residual Measurement

    Chapter 5 - Balancing Measurements When the marker appears to be frozen, press <STORE>. Adjust the plane 2 phase to the zero mark or reference mark as before. 10. Press <STORE> to complete plane 1 measurement and begin plane 2 measurement. 11.
  • Page 185 Two Plane Balancing with a Strobe Light The dataPAC also calculates split vectors if weight needs to be divided between two contiguous blades, rather than attached to a single blade. Press <F1> (VSplit On/Off) to turn Vector Splitting off and on. Always view the direction of rotation from the same point.

  • Page 186: One Plane Balancing With A Reference Trigger

    Chapter 5 - Balancing Measurements When the marker appears to be frozen, press <STORE>. Adjust the plane 1 phase to zero or a reference mark as before. Press <STORE> to complete plane 1 measurement and begin plane 2 measurement. Press the trigger on the strobe. Adjust the plane 2 machine speed.

  • Page 187: Taking The Initial Vibration Measurement

    One Plane Balancing with a Reference Trigger Taking the Initial Vibration Measurement Connect the reference trigger to the dataPAC 1500’s REF input using the connector cable provided. Align the trigger with the machine you want to balance. Attach a transducer to a bearing housing. With the machine stopped, make a mark on one rotor which will serve as a reference when using the reference trigger.
  • Page 188 Chapter 5 - Balancing Measurements Press <F1> (Positions) to enter the number of positions. The number of positions refers to the number of rotor components, such as blades on a fan. The Edit Positions window opens. Enter 0 for a rotor without vanes or blades, or enter the number of vanes or blades. When your entry is complete, press <DONE>, or press <SHIFT><F5>...

  • Page 189: Adding The Trial Weight And Taking A Measurement

    One Plane Balancing with a Reference Trigger 10. The dataPAC automatically measures the speed, vibration, and phase. The values are constantly updated on the screen. Allow these values to stabilize before continuing to the next step. 11. Enable or disable averaging. Pressing <F1> (Enable/Disable Averaging) allows you to turn on or off vibration and phase averaging.
  • Page 190 Chapter 5 - Balancing Measurements Notice, after you have entered the trial weight, the lower half of the dataPAC display indicates the vibration level of the initial vibration as well as the trial weight you just entered. This display updates as you complete each step of the balancing operation. Attach the trial weight to the rotor.

  • Page 191: Adding The Correction Weight And Taking A Residual Measurement

    One Plane Balancing with a Reference Trigger Adding the Correction Weight and Taking a Residual Measurement The dataPAC has calculated and now displays a recommended balancing weight labeled “Correction” on the dataPAC display. Attach correction weight according to the display. The “Position” column indicates where to attach the correction weight. For rotors with zero positions the position is shown in degrees, in the direction of rotation set in Weight Placement, from the 0°...

  • Page 192: Two Plane Balancing With A Reference Trigger

    Chapter 5 - Balancing Measurements Press <STORE> to take a residual measurement with the correction weight attached. The dataPAC automatically measures the speed, vibration, and phase. The values are constantly updated on the screen. Allow these values to stabilize before continuing to the next step.
  • Page 193 Two Plane Balancing with a Reference Trigger Start a balancing session by pressing either <F2> or <F4>. To enter new balancing data, press <F4> (New Run) from the Balancing Options window. To continue a saved balancing session, press <F2> (Continue Loaded Run). The Balancing window opens. Select the correct transducer setting.
  • Page 194 Chapter 5 - Balancing Measurements Start the machine and allow it to reach normal operating speed. Press <STORE> to begin the initial measurement. 10. The dataPAC automatically measures the speed, vibration, and phase in the first plane. The values are constantly updated on the screen. Allow these values to stabilize before continuing to the next step.

  • Page 195: Adding The Trial Weight And Taking A Measurement In Plane 1

    Two Plane Balancing with a Reference Trigger Adding the Trial Weight and Taking a Measurement in Plane 1 When you have completed the initial measurement, press <F1 > (Continue). The Enter Trial Weight - Plane 1 window appears. With the Edit Trial Weight - Plane 1 window open, enter the magnitude of the trial weight you will attach to the rotor in the first plane.
  • Page 196 Chapter 5 - Balancing Measurements With the Edit Trial Weight Angle - Plane 1 window open, enter the angle at which you are about to attach to the rotor in the first plane. When your entry is complete, press <DONE>. To cancel, press <SHIFT><F5> (Abort). If the machine has no vanes or blades, the trial weight location should be specified in degrees (0 - 359).

  • Page 197: Adding The Trial Weight And Taking A Measurement In Plane 2

    Two Plane Balancing with a Reference Trigger The dataPAC automatically measures the speed, vibration, and phase in the first plane. The values are constantly updated on the screen. Allow these values to stabilize before continuing to the next step. Enable or disable averaging by pressing <F1> (Enable/Disable Averaging) during measurement.
  • Page 198 Chapter 5 - Balancing Measurements In either case, the position is measured from the reference mark in the direction specified in the Weight Placement field on the Balance Options screen. Press <DONE> when complete. Notice that after you enter the trial weight, the lower half of the dataPAC display indicates the vibration level of the initial vibration in the second plane, as well as the trial weight just entered.

  • Page 199: Adding The Correction Weights And Taking A Residual Measurement

    Two Plane Balancing with a Reference Trigger Adding the Correction Weights and Taking a Residual Measurement Attach correction weights. The dataPAC calculates and displays a recommended balancing weight labeled “Correction” on the dataPAC display. There are two correction weights, one for each plane. The “Position” column indicates where to attach the correction weight.
  • Page 200 Chapter 5 - Balancing Measurements You may toggle between Dynamic or Static/Couple corrections by pressing <F2>. Additionally, the dataPAC calculates the amount of weight that might be removed, if weights are already attached to the rotor. Press <F3> to toggle between Remove Weight and Add Weight.

  • Page 201: Unloading Balancing Runs Using A Modem

    This external modem is connected to the dataPAC with a special cable which you can order from Entek IRD. The external modem must have a 25-pin connector to connect to the dataPAC with the special cable.

  • Page 202: Setting Up Remote Transfer On The Host Computer

    Chapter 5 - Balancing Measurements This diagram shows the connections between the remote dataPAC and the host computer. Host Computer: EMONITOR Odyssey or Enshare (for routes) dataPAC Utility Program AreaSpan Utility Program Scheduler Modem (internal or external) Phone Lines Modem (external) Serial Connector dataPAC 1500 Setting Up Remote Transfer on the Host Computer...

  • Page 203: Setting Up Remote Transfer On The Datapac

    Unloading Balancing Runs using a Modem Choose the Setup button. Make sure the modem is correctly set up. You can configure the modem by pressing the Configure button. Refer to the modem manufacturer’s documentation for details on setting up the computer modem. Choose OK.
  • Page 204 Chapter 5 - Balancing Measurements In the Program Manager, use the arrow keys to highlight the Remote Transfer icon, then press <SELECT>. The following screen appears. Use the arrow keys to move the box up to the setting you want to change, then press <SELECT>.
  • Page 205 Unloading Balancing Runs using a Modem Obtaining an outside line usually involves two steps, first, dialing a special character such as 9, then waiting for another dial tone. Check your modem’s manual to see if it supports a “wait for dial tone” dialing command. The “W” character normally serves this purpose. For our example, “9W”...

  • Page 206: Unloading Balancing Files To The Host Computer

    Chapter 5 - Balancing Measurements To save or load settings You can save settings for future use, or load previously saved settings. For example, if you have more than one phone number that you dial in to, you can save time by storing settings for each.
  • Page 207 Unloading Balancing Runs using a Modem Choose Serve Collector. When the following dialog box appears, the computer is ready to receive a call from the dataPAC. dataPAC User’s Guide 205 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com Artisan Technology Group - Quality Instrumentation ...
  • Page 208 Chapter 5 - Balancing Measurements From the dataPAC site Connect the dataPAC to the external modem using the supplied cable. The cable connects to the I/O port on the dataPAC. Open the Remote Xfer application by selecting it in the dataPAC Program Manager. The following screen appears.

  • Page 209: Collecting Phase Measurements For Analysis

    Collecting Phase Measurements for Analysis Balance runs that are locked at the instrument are listed but you cannot unload a locked route because it is opened by another dataPAC application. You will see a message informing you of this. If you see error messages, check to make sure the route is not locked by entering the Memory Card Manager program.
  • Page 210 Chapter 5 - Balancing Measurements At this point you should check 1X. It is possible to think the strobe is set correctly when you are actually on a sub-harmonic of the RPM. To check, press <F4> (2 X Speed) to double the strobe flash rate.

  • Page 211: Frequency Response Function (Frf)

    Chapter 6 Frequency Response Function (FRF) This chapter shows you how to use the Frequency Response Function to determine the resonant frequency and relative dynamic stiffness of a structure. The FRF feature is only available for the dataPAC 1500. Overview of the dataPAC 1500 FRF Module ........210 Hardware Required by the FRF Module ..........

  • Page 212: Overview Of The Datapac 1500 Frf Module

    The FRF module is an optional addition to your dataPAC 1500, activated using a security key. Contact Entek IRD for information on purchasing this module and hammer kit. For more information about using a security key, see “Using Security Keys” on page 59.

  • Page 213: Force Hammer

    Hardware Required by the FRF Module Force Hammer The force hammer is a specially designed tool that provides a nearly constant force over a broad frequency range. It is capable of providing a measurable amount of vibration amplitude across its designed frequency range. The hammer size, length, material, and velocity at impact determine the amplitude and frequency content of the impact force.
  • Page 214 Chapter 6 - Frequency Response Function (FRF) Select the hammer based on the relative damping of the structure under test. You can use any force hammer whose output does not exceed 5 volts. Large, heavy structures normally have a much higher damping rate than smaller, lightweight ones. Refer to the table above for the force, frequency, and sensitivity ranges of commonly used hammers.
  • Page 215 Hardware Required by the FRF Module The force spectrum shows how the impact force is distributed across the spectral frequency range. The graph above illustrates that as the frequency increases there is a steady decline in the amount of energy at these frequencies. Without sufficient energy to excite the higher frequencies, you cannot measure or determine if the structure is resonant at those higher frequencies.
  • Page 216 Chapter 6 - Frequency Response Function (FRF) While the force waveforms for the steel and plastic tips appear similar, notice the significantly lower frequency range that this impact excited. Using a guideline for acceptable energy of approximately 20%, you can see that this setup (hammer/tip/impact force) offers a range to about 100,000 CPM.
  • Page 217 Hardware Required by the FRF Module Note the amplitude scale is approximately three times that of the plastic tip. You can use any combination of tips to manipulate the usable frequency range and to concentrate more energy into the lower frequencies. The graphs shown below were made by using two rubber tips on top of each other.

  • Page 218: Accelerometer

    Chapter 6 - Frequency Response Function (FRF) Accelerometer You use an accelerometer to collect the response data with the FRF Module. You can use any accelerometer compatible with the dataPAC instrument. The force hammer you use, the type of hammer tip, and the expected frequency range all contribute to the choice of the pickup used (mV/g).

  • Page 219: Static Vs. Dynamic Stiffness

    Understanding the Concepts Behind the FRF Module If it takes 900 lbf to move a structure 0.001 inches, then the stiffness is expressed as K using: 900lbf ------------------------ - --- - 900000 0.001inch where: K represents the dynamic stiffness in the units lbf / inch F is the force in lbf it takes to move the structure A is the distance the structure moved Static vs.

  • Page 220: Six Frequency Response Functions

    Chapter 6 - Frequency Response Function (FRF) Six Frequency Response Functions The six response function tests provided in the FRF Module can be categorized two ways. The most important characteristic is whether the test is measuring the ratio of the input to the output or vice versa.

  • Page 221: Signal Processing Features Of The Frf Module

    Setting Up FRF Measurements Signal Processing Features of the FRF Module The frequency response functions are measured by simultaneously sampling both the input force and output response signals. The stored time waveform data for both channels contains frequency, amplitude, and phase information. The frequency response and coherence data is then computed from the Fourier transforms (auto spectrum and cross spectrum) of the time waveform data.

  • Page 222: Connecting The Accelerometer

    Chapter 6 - Frequency Response Function (FRF) In order to collect the data needed for the frequency response calculation, you need to sample both the force input and structure response signals. You do this by connecting the force hammer output, through a power unit/amplifier, into the reference (REF) input (BNC jack) and by connecting the response channel accelerometer to the main input of the dataPAC instrument.

  • Page 223: Setting Up The Force Channel And Response Channel

    Setting Up FRF Measurements Attach the selected transducer to the appropriate place on the structure you wish to test. Setting Up the Force Channel and Response Channel Configuring the dataPAC instrument to collect frequency response data involves setting up the two channels, the Force Channel and the Response Channel. After these are set up, you can set up the FRF measurement itself.
  • Page 224 Chapter 6 - Frequency Response Function (FRF) With all inputs connected to the instrument, strike the structure with the hammer. The screen is similar to that pictured below. Press a function key to modify the format of the data displayed and graphically change the measurement parameters previously set in the text mode.

  • Page 225: Force Channel Setup - Text Mode

    Setting Up FRF Measurements In this screen, the current measurement parameters are displayed above the data for the hammer blow. The center of the screen contains a plot of amplitude versus time for the most recent hammer blow. The currently selected (highlighted) measurement parameter (above the plot) is superimposed over the plot window.
  • Page 226 Chapter 6 - Frequency Response Function (FRF) Type This field is set to Impact at this time, but as new test methods are added to the FRF Module, this may become a variable setting. Units The Units field controls the unit of measure that is used to gauge the amount of impact force.

  • Page 227: Response Channel Setup - Text Mode

    Setting Up FRF Measurements Double Hit (% of Impact) The double hit detection feature of the FRF Module is a useful tool to help verify the validity of collected data. It is easy to allow the hammer to bounce once or more when striking the excitation blow.

  • Page 228: Collecting And Analyzing Frf Data

    Chapter 6 - Frequency Response Function (FRF) Collecting and Analyzing FRF Data When your setup parameters are complete, you can begin collecting data samples. To do so, follow these steps. Press <F3> (FRF Measurement). The measurement screen appears. Press <F3> (Display Options) and press <SELECT> to view the available display types.
  • Page 229 Collecting and Analyzing FRF Data Use the arrow keys to select the Display Type field and press <SELECT>. Your choices are shown below. The six basic resonance functions allow you to choose four different data formats: Magnitude, Phase, Real Part, Imaginary Part. You can compare them by placing one in the top trace on your display and one on the bottom trace.

  • Page 230: Reviewing The Frf Data

    Chapter 6 - Frequency Response Function (FRF) Strike the structure with the hammer as you did when setting up the force and response channels. The hammer should strike the surface perpendicular to the surface plane and in the same plane as the response transducer. After the impact, the dataPAC collects the spectrum and computes the data.
  • Page 231 Collecting and Analyzing FRF Data To pinpoint data using the cursor Like all dataPAC graphical displays, you can move the cursor with the arrow keys to precisely read the corresponding values. The cursor in the FRF module consists of a circle and crosshair that follows the peaks and valleys in the data as you move it along the axis.
  • Page 232 Chapter 6 - Frequency Response Function (FRF) In the diagram below, the display is zoomed, but dominant peak at 48,000 CPM is still in window. In the diagram below, the display is zoomed in one more time and dominant peak was no longer in the display area;...
  • Page 233 Collecting and Analyzing FRF Data To improve display scaling using logarithmic displays Logarithmic displays provide yet another means of viewing the data. To change the display, press <F3> (Display Options). Then use the arrow keys to select Frequency Scale and press <SELECT>...

  • Page 234: Structural Analysis Using The Frf

    Chapter 6 - Frequency Response Function (FRF) To use single or dual plot displays When analyzing FRF data it is sometimes helpful to view a dual plot display of two functions. You can also use the entire screen for better resolution of a single plot. To get a single plot display, choose None under Top Trace Display Type and choose any display type for the bottom trace.
  • Page 235 Collecting and Analyzing FRF Data To determine resonant frequencies using accelerance When you strike the structure with the impact hammer broad band energy across the entire frequency spectrum (dependent on hammer, tip, frequency range selected) is put into the structure. If you consider that the energy is distributed equally across the frequency range, frequencies which show a high accelerance can be considered to be excited at that particular frequency.
  • Page 236 Chapter 6 - Frequency Response Function (FRF) Note that the cursor is positioned on a point (14,620 CPM) that shows a fairly low level of coherence (0.536). When comparing this to the accelerance trace on top, you can see that this occurs on an anti-resonance and the input signal at this frequency is very low.
  • Page 237 Collecting and Analyzing FRF Data The following display shows the plot of Accelerance Phase on the top trace and Accelerance Magnitude on the bottom trace. Note the 180 phase shift at resonant frequencies. In viewing the phase plots, you need to be aware that the phase measurements near the axes can wrap around to the other axis.
  • Page 238 Chapter 6 - Frequency Response Function (FRF) dataPAC User’s Guide Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 239: Appendix

    Some dataPAC models beep intermittently, sometimes at a very low volume, for no apparent reason. This beep is harmless but can be annoying. Contact Entek IRD Customer Support to arrange for servicing. If you send the unit in, Entek IRD can eliminate this beep.
  • Page 240 dataPAC User’s Guide Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 241: Glossary

    Glossary Glossary The Glossary contains definitions of many of the terms used with the dataPAC and the online help system. Boldface type indicates terms that are defined elsewhere in the glossary. alarms – An alarm alerts you to a change in a measurement. For example, an alarm can notify you when the measured value for a machine exceeds a pre-defined value.
  • Page 242 Glossary data collector – A data collector is a device that measures and stores vibration and other data. Vibration data may include magnitude, spectrum, time waveform, and phase data. Other data may include process measurements such as pressure, temperature, and operating hours.
  • Page 243 Glossary orders – Multiples of the operating speed of a piece of equipment. The first order is the operating speed. The second order is two times the operating speed, and so on. overload – Occurs when the input signal from your transducer exceeds the current setting of the data collector hardware.
  • Page 244 Glossary true zoom – A focus on the frequency range that you specify, collecting data showing that range in great detail. unscheduled measurement – Measurements you make that are not part of a list in the data collector. waterfall spectra – A spectral display that shows several spectra over time, cascading them using time as the z-axis.

  • Page 245: Index

    Index Index ← < > key 21 Backlight Time-Out (Minutes) 40 ↑ < > key 21 balance runs → < > key 21 remote transfer 199 ↓ < > key 21 balancing 1- and 2-plane 164 Auto Speed 170, 177, 207 Balancing Options window 163 one plane with reference trigger 184 accelerance 218, 233...
  • Page 246 Index collecting data data collector analysis 106 1000, 1250, 1500 models 14 balancing 163 display contrast 29 FRF 210 operating system 30 off route 106 operating system version number 29 off route magnitude 108 Data I/O port 21 off route orders based spectrum 121 Data Overwrite 38 off route phase magnitude speed 138 Data Sets...
  • Page 247 Index Display Scaling font size off route FFT 114 Memory Card Manager 59 off route overall 109 review data 79, 80 off route phase 140 force channel setup off route true zoom 136 FRF dynamic mode 221 off route TWF 130 FRF text mode 223 start-up/coast-down 144, 149 force hammer...
  • Page 248 Index grid display option 42 left arrow key 21 displaying on spectrum 89 linear average displaying on TWF 45 off route spectrum 131 gSE time waveform 133 off route spectrum parameters 116 off route true zoom 137 lines See also resolution Hamming window List of Databases 58 off route spectrum 113...
  • Page 249 Index memory card off route overall battery 54 collecting 108 battery holder 54 setting up 108 battery lock switch 54 off route phase bootable 32, 57 collecting 141 initializing 55 setting up 139 inserting and removing 53 off route phase/magnitude/speed 138 overview 53, 55 off route spectrum size needed for database size 57...
  • Page 250 Index Peak Amplitude, TWF 44 remote transfer 33 peak cursors 82 host computer set up 200 peak hold averaging overview 199 off route spectrum 116, 131 set up dataPAC 201 off route true zoom 137 Remote Xfer program 25 Peak Threshold 43 resolution 42 Peak to Peak Amplitude, TWF 44 response channel setup...
  • Page 251 Index screen capture Speed-Linear, Start-Up/Coast-Down 145, 151 deleting captured images 102 Speed-Log, Start-Up/Coast-Down 145, 151 directory 99 start-up/coast-down displaying 59 Bode/Nyquist plots 151, 153 keys 99 Bode/Nyquist, overview 143 overview 97 measurement parameters 143 transferring to computer 99 waterfall display 152 viewing on computer 101 waterfall overview 143 Screen Print 101...
  • Page 252 Index Trigger Control Off Route FFT 115 Warn On Overwrite 38 Off Route TWF 131 waterfall display Trigger Hold-Off, TWF 46 blanking level 93 Trigger Level, Start-Up/Coast-Down 147, 150 changing viewing angle 92 Trigger Mode, TWF 45 overview 91 Trigger Position, TWF 46 start-up/coast-down 152 Trigger Pulses/Revolution time of collection 93...
  • Page 253 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
  • Page 254 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...

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