Benstone Impaq Elite User Manual
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Benstone Impaq Elite User Manual

Dynamic signal analyzer
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Impaq Elite™ Dynamic Signal Analyzer
User Manual
Edition: January, 2011
Benstone Instruments, Inc.- 32905 Northland Court- St. Paul, MN 55045
Telephone: 651-257-6500
www.benstone.com
Copyright ©2005,6 all rights reserved

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  • Page 1 Impaq Elite™ Dynamic Signal Analyzer User Manual Edition: January, 2011 Benstone Instruments, Inc.- 32905 Northland Court- St. Paul, MN 55045 Telephone: 651-257-6500 www.benstone.com Copyright ©2005,6 all rights reserved...

  • Page 2: Table Of Contents

    Contents WELCOME ..........................4 ......................4 YSTEM ONTENTS ..................4 UALITY ONTROL ALIBRATION ......................4 SING ANUAL ............................5 INTRODUCTION ........................6 ™ ................... 6 AYOUT OF THE MPAQ LITE ......................... 7 MAIN KEYPAD ........................ 8 FUNCTION KEYPAD ........................8 ONNECTORS ..........................
  • Page 3 4.18 ....................43 ATERFALL EASUREMENT 4.19 ............43 ONTROL OF ATERFALL EASUREMENTS 4.20 ............... 44 AVIGATING THE ISPLAY OF ATERFALL 4.21 ..........................48 OOLS...

  • Page 4: Welcome

    The Benstone Instruments Dynamic Signal Analyzer is very flexible. Your system may have come with only one software feature, but the Impaq Elite™ is designed for easy upgrade of software features as needed by the user.

  • Page 5: Help

    1.4 Help Benstone Instruments wants to help you get the most from your system. If there is anything else we can do, please feel free to call or Email us. Telephone: 651-257-6500 Fax: 651-357-4004 Service or Calibration: support@benstone.com General information: info@benstone.com...

  • Page 6: Introduction

    2 Introduction This chapter gives a general introduction to the Impaq Elite™. It provides an overview of the layout, keypad, connectors and other hard ware features. Detail of the individual operation of each function will be described in later chapters 2.1 Layout of the Impaq Elite™...

  • Page 7: Main Keypad

    2.2 main keypad On/off key – use this key to turn the instrument on or off. Navigation keys – Use these keys to move a focus or a cursor in the following occasions: Move a cursor to left or right Move the focus in a list of options Select an active window OK key –...

  • Page 8: Function Keypad

    2.4 Connectors On top of the Impaq Elite is a series of connectors to provide an interface to accept external signals (usually from your sensors), power supply or to output communications with external devices like a computer.

  • Page 9: Turning On

    2.5 Turning On Press and hold the on/off key to turn on your Impaq Elite. It takes several seconds to load the operational system, and then the instrument will show you the main display as follows. (Double tap the icon to run a program) Your display will show the icons of programs installed.

  • Page 10: Charging The Battery

    2.6 Charging the battery The Impaq Elite is designed to run continuously up to 6 hours with a fully charged battery. When you turn on your Impaq Elite, you can see the condition of the battery power gage at the lower right corner of the screen.

  • Page 11: Specification

    2.7 Specification Operating System Windows CE Number of Input 4 Analog inputs, 1 TTL input and 1 TTL output Channels Connector Style 7 pin Lemo and BNC on 4 Input Channels, 6 pin Lemo on Auxiliary Channel, 3 pin LEMO power supply and 4 pin LEMO triaxial input Channel Coupling AC, DC, ICP, 200V Microphone, 0V Microphone Auxiliary Channel...

  • Page 12: Utility Program

    3 Utility Program Run the utility program from the main display of Impaq Elite. This program allows you to review the system information, programs installed on this instrument and setting up the system parameters. Use “cancel” key to leave program.

  • Page 13: Program List

    Program List: This display will show a list of programs currently installed and active on your Impaq Elite. The Impaq Elite™ has a built-in time lock for certain programs. If you have a demo version of a particular software, the time lock will display how much remaining time is left.

  • Page 14: Fft Program

    4 FFT Program 4.1 Run FFT program Move the focus to highlight the FFT software program, and then press [OK] to run this program. Or double tap the program icon with your finger to run this program. 4.2 Navigating the displays The main display (below) shows the measured data in either one or two windows, depending on your setup.

  • Page 15: Navigation Between Active And Inactive Displays

    With an active window, you may move the cursor and show the cursor values in the table. You may also change the display function, adjust scale, and other display parameters. 4.3 Navigation between active and inactive displays You can select a window as “active” by either tapping the window area, or by using the navigation keypad to move up or down.
  • Page 16 Maximize or restore the active window by tapping its title bar. (In this example, the upper window is active.) When the upper window is active, use the navigation keys and move up to maximize it. Move down to restore it. When the bottom window is active, use the navigation keys and move down to maximize it.
  • Page 17 The following flow chart shows how to select the active window and maximize or restore its size by using navigation keys. No change upper upper lower upper upper lower lower upper upper lower lower lower No change...

  • Page 18: Soft Key Menu: File

    4.5 Soft key menu: File File Management allows you to properly navigate the system to save, rename, and load files. Tap the file button on the screen or press F1 key to open the file menu. Press [cancel] key or tap the file button again to close the window. Exit: Exits this program.
  • Page 19 Note- You can always remove the compact flash card from the impaq Elite and then perform these functions from your PC. File Manager-View Menu- Selecting View allows you to arrange the icons by Name, Type, Size, or Date.
  • Page 20 Save Setup: Selecting Save Setup opens up a new window for saving the setup parameters into a .fs2 file. You can save the setup, rename the file name, or create a new directory as shown in the previous pages. Open Data: Selecting Open Data to open a saved data file as well as the associated setup parameters.

  • Page 21: Soft Key Menu: Setup

    4.6 Soft key menu: Setup The Setup menu has four submenus: Mode, Measurement setup, Channel setup and Engineering unit. Each will be described in detail in the following sections. To enter a submenu, use the navigation keys to move right or left, and then press OK to enter the menu.

  • Page 22: Measurement Menu: Setting Up The Measurement Parameters

    4.8 Measurement Menu: Setting up the measurement parameters Measurement Menu allows the user to select various parameters relating to the measurement and how to set up the measurement. Frequency Band: Band, Lines, Zoom, Start Frequency Average: Average type, Average number, Overlap, Preview, Overload/Reject Trigger: Trigger On/Off, channel, level, slope, delay % Tachometer: Pulses/ rev, hold off time, show RPM Frequency Band:...
  • Page 23 Overlap: Select 0%, 25%, 50%, 75%, Maximum. Note- when maximum is selected, the impaq will perform the maximum overlap available at the time of measurement. This is done automatically, as the impaq Elite is a real time instrument and will allocate as many resources as possible based on the setup parameters.
  • Page 24 Delay %: This is an input screen where you can enter an integer for a delay % between –99 to +99. Tacho: Pulses/Revolution: Via the [Navigation Keypad], press [OK]. You will see an input panel to enter the number of pulses per revolution. If the rotation speed needs to be measured, the program will use the above triggering signal for calculating the RPM value.

  • Page 25: Channel Menu: Setting Up The Parameters Of Input Channels

    Channel Menu: Setting up the parameters of input channels Channel Setup Menu allows the user to select various parameters related to each channel. Channel On/Off selection, Input range, Coupling type, Window type, Force factor, Exponential factor Channel ID, Auto Advance, Advance number Select channel setup to define each channel according to what you are measuring.
  • Page 26 Definition of exponential function: x(t) = log (-Bt) Definition of exponential factor X: X = log (-Bt) at t = T, where T is the length of the time block. Actually X is the attenuation rate of the exponential window at the end of the time block.
  • Page 27 Channel ID for machines You can define the channel ID by a combination of 3 hierarchy levels. The point ID helps you to identify the location and direction of your measurements. You can show the channel ID’s as the legend of data trace in the main display. Local Soft Key Menu: Return, Assign Single, Assign All Return: Selecting the Return function returns you to the Setup menu.

  • Page 28: Engineering Unit Menu: Setting Up The Engineering Units

    The Engineering Unit menu allows the user to specify the type of sensor you are connecting to, the units to be measured, the units to be displayed and weighting that is to be used as well. The Impaq Elite™ is designed to support a wide range of sensors from Accelerometers, to 200V microphones.
  • Page 29 Sensitivity mV/SU: This is a user selectable input value. Enter the sensitivity of the device you are connecting to in the input box. Use the [Navigation Keypad] and enter the value via the keypad and press [OK] when complete. Display Unit (DU): If you select Acceleration, and want to display velocity for example, you can select this here.
  • Page 30 It should be cautioned that inaccurate scaling factors will result in bad test data. You can also add Sensor units and Display units to the Impaq Elite™ via the Add SU or Add DU [function key] for the function selected.

  • Page 31: Soft Key Menu: Display

    4.11 Soft Key Menu: Display Press the Display soft key to display the soft key menu. Selecting and navigating the displays have been discussed in the previous pages. In the following paragraphs, we will describe functions available for each function. Trace Setup: Select this option will display the trace setup menu for the active window.
  • Page 32 X-Unit: Select the unit of axis from Hz and RPM. X-Axis: Select to display the X axis in linear or log scale. Scale: Auto, Fix X, Fix Y, Full Scale, Zoom The Scale function allows you to change what is displayed. There are five functions with the Scale function, Auto, Fix, X, Fix Y and the Hot Key.
  • Page 33 Cursor: Off, Single, Harmonic, Harmonic + Single, Peak, Hot Key The cursor function allows you to highlight certain frequencies for more detailed analysis. Off: Turns off the cursor Note: When the cursor is off, it will show the overall value in the cursor table. Single: Displays a single cursor.

  • Page 34: Trace Setup

    Legend Select the type of data legend displayed in the window. For example, you can select to display channel ID’s as the legend during a modal or ODS testing. BG Color Select black or white back ground color for the data window. 4.12 Trace Setup Select the Trace Setup icon to enter the menu of Trace Setup.

  • Page 35: Selecting A Function From Trace Setup Menu

    4.13 Selecting a function from Trace Setup menu Tap the icon to select a function for display in this window. Available functions in the Function Menu: Time x(t): Time waveform that is displayed in Sensor Unit. Complex Spectrum Sx(f): This is also known as Linear Spectrum , which is derived from the Fourier transform of x(t) Note that spectrum is a complex function which has both real and imaginary part.

  • Page 36: Selecting The Type Of Yaxis From Trace Setup Menu

    divided by the input Spectrum Sx(f). Sy/x(f) = Sy(f)/ Sx(f) FRF is a complex function that is often used for modal analysis or operational deflection shape analysis. Coherence Hxy(f): The coherence function is an indication function that describes the relation of two signal. Hxy(f) = (|Sxy(f)|)/(|Sx(f)| |Sy(f)|) The value of Coherence is between 0 and 1.

  • Page 37: Setting Up Data Traces Displayed In The Data Window

    4.15 Setting up data traces displayed in the data window One data window can show up to four data traces at one time, so there are four trace buttons in the menu bars. You have the option to turn off some of the traces or to assign a channel to perform a trace independently, i.e., only look at Channel 3, for example.

  • Page 38: Soft Key Menu: Tools

    “Open”. If an IEPE sensor is connected to this channel, open circuit usually means a broken cable. Select “Power” to check the IEPE power supply of your Impaq Elite. To conduct the checking, discount all sensors and select Verify. In normal condition, the power supply of all channels should be around 24.7 Volts.
  • Page 39 TTL Out: The TTL Out allows you to have the Impaq Elite™ send a TTL signal out via the auxiliary channel to another device such as a strobe. This feature is based on the cursor position in the frequency domain function such as spectrum, Auto Power Spectrum, or FRF.
  • Page 40 Note: Use this tool to add a note to your measurement. The Note you selected or created will you saved as a part of the data file. You can also use the note for generating a default file name in the file name option menu. With the Note tool, you can identify your data file easily among many files.
  • Page 41 To begin: 1. Measure the calibration signal in the power spectrum first. 2. Move the cursor to the calibration frequency. In this example of acoustic calibration, the calibration frequency is 1 kHz. 3. Open the Calibration table from the [Tools] menu. Input the new calibration values for the calibration signal.

  • Page 42: Status Bar

    Undo Mark Cursor Select Undo Mark Cursor to cancel the previous cursor label. Clear All Marks Select Clear All Marks to delete all the cursor labels. 4.17 Status Bar The Status bar displays the status of the system. When the channel icon shows abnormal conditions, please stop measurement and correct the problem.
  • Page 43 Another very useful program for varying speed measurement is “Order Tracking” analysis. Please contact Benstone Instruments for more information about this application. 4.19 Step Control of Waterfall Measurements AS you select Waterfall mode, please select the way of controlling measurement steps.
  • Page 44 greater than the Stop RPM. Armed by Time Step: When the user chooses “Armed by Time Step”, the program takes measurements according to the predefined time step. No. of counts: Define the total number of measurements Stop by: Count No. The measurement stops as the number of counts reaches the defined number.
  • Page 45 Trace & Waterfall Select to display the waterfall plot with a small trace plot on the top. This is the default display of waterfall mode. Trace & Map Select to display the intensity map plot with a small trace plot on the top. The intensity map is an alternative form of waterfall plot, which shows the intensity of amplitude with colors.
  • Page 46 Adjust View Angle Select this option to adjust the view angle of waterfall plot. And then use navigation keys to adjust the view angle. Press OK to confirm the change, or press Cancel to exit. Y-Axis Select the scale of Y-axis to be linear, log or dB. Y-Scale Select this option to adjust the range of Y-axis.
  • Page 47 mixed up with noise floor, you may use these options to hide the unwanted noise from the plot . For example, the following figure shows a waterfall plot with dB scale in Y axis. After tuning the bottom up, the dominating signal becomes easier to be identified.
  • Page 48 trace cursor highlights the spectrum trace at its position. Slice Cursor Select the Slice cursor (vertical) for the waterfall or intensity map plot. Use navigation keys to move left or right to move the cursor. A trace cursor highlights the band trace at its position. Z-view Select to display the Z axis in count number, time or RPM.
  • Page 49 Data Recorder program:...
  • Page 50 Data Recorder Program 4.22 Run Data Recorder program Move the focus to highlight the Data Recorder program, and then press [OK] to run this program. Or double tap the program icon with your finger to run this program. 4.23 Navigating the displays The main display (below) shows the measured data in four windows, i.e., Pane A, Pane B, Pane C and Pane D respectively.
  • Page 51 Use Keypads Press Cancel key to make the title bar of the active window turn red. And then use the navigation keys to move the red focus to the selected window. Press OK to confirm your selection. Use Touch Screen Tag the selected window to make it active.
  • Page 52 4.26 Soft key menu: File File menu allows you to save, rename, and load files. Tap the file menu on the screen or press F1 key to open the file menu. Press [cancel] key or tap the file button again to close the window. Exit: Exits this program.
  • Page 53 Note- You can always remove the compact flash card from the impaq Elite and then perform these functions from your PC. File Manager-View Menu- Selecting View allows you to arrange the icons by Name, Type, Size, or Date. Open Setup: Selecting Open Setup to open a setup file .fs2 and apply its setup parameters to the FFT program.
  • Page 54 Open Data: Selecting Open Data to open a saved data file as well as the associated setup parameters. Save Data: Selecting Save Data to save the data on the buffer to a .drd file. when you enter the Data Recorder program, the system will create a temporary new file called untitled.drd, which contains no data in it.
  • Page 55 4.27 Soft key menu: Setup The Setup Menu allows the user to select various parameters relating to the data recording and the parameters of input channels. Band: Select frequency band for your data recording from 50 Hz to 40 kHz. Note that in order to conduct continuous seamless recording, please set the frequency band according to the following limitation.
  • Page 56 have to press Start/Stop key to terminate the recording procedure. Stop by RPM: If you connect a tacho sensor to the Auxiliary channel, you can stop the recording by a specified speed. This is useful when you are recording data over a start-up or coast-down process.
  • Page 57 Local Soft Key Menu: Return, Assign Single, Assign All Return: Selecting the Return function returns you to the Setup menu. Selecting return again returns you to the live display. Assign Single: This feature speeds up the entry requirements for channel setup. Assign single will assign that parameter selected for the column you are in.
  • Page 58 4.28 Soft key menu: Setup Press the Display soft key to display the soft key menu. Selecting and navigating the displays have been discussed in the previous pages. In the following paragraphs, we will describe functions available for each function. Time Waveform: Select to monitor the recorded signal in time domain.
  • Page 59 Example of displaying two windows Example of displaying one single (Pane A and B) window (Pane A) Show Bar Chart Select to turn on or turn off the Bar Chart. The bar chart on the right side of a data window shows the signal level with a bar.
  • Page 60 4.29 Soft key menu: Tools The Tools menu contains several useful utilities, including Calibration, IEPE check, Note and playback. Calibration: Selecting Calibration is for calibrating a sensor (adjusting the sensitivity). When you require sensor calibration prior to measurement, this procedure is used. To begin: 1.
  • Page 61 “Open”. If an IEPE sensor is connected to this channel, open circuit usually means a broken cable. Select “Power” to check the IEPE power supply of your Impaq Elite. To conduct the checking, discount all sensors and select Verify. In normal condition, the power supply of all channels should be around 24.7 Volts.
  • Page 62 Select Playback to review the data that stored in the .drd file. Return Fast Backward Play Fast Forward Play: Select this soft key to playback the data file. Fast Forward: Select this soft key to toggle the playback speed by 1X, 2X 4X or 8X. Fast Backward: Select this soft key to play data backward and toggle the playback speed by 1X, 2X, 4X or 8X.
  • Page 63 Vibration Meter Program 4.30 Run Vibration Meter program Move the focus to highlight the Vibration Meter program, and then press [OK] to run this program. Or double tap the program icon with your finger to run this program. 4.31 Navigating the displays The main display (below) shows the measured data in a window listing the A: acceleration, V: Velocity, or D: Displacement.
  • Page 64 Note- You can always remove the compact flash card from the impaq Elite and then perform these functions from your PC. File Manager-View Menu- Selecting View allows you to arrange the icons by...
  • Page 65 Open Setup: Selecting Open Setup to open a setup file .vst and apply its setup parameters to the Vibration Meter program. Save to Default: Saves the current setup parameters to the default file DEFAULT.VST. Next time you access the Vibration Meter program, it will start up with the default setup.
  • Page 66 4.33 Soft key menu: Setup The Setup Menu allows the user to select various parameters relating to the Vibration Meter Program channel, unit, signal processing and recorder functions of this program. 4.34 Channel Menu: Setting up the parameters of input channels Channel Setup Menu allows the user to select various parameters related to each channel.
  • Page 67 IEPE Power: Select either On or Off. On means that your accelerometer connected to the impaq elite is an IEPE powered accelerometer. IEPE Power: Select Auto Range: Check the check box to “auto range” automatically. Unchecked will do what ????? 4.35...
  • Page 68 Displacement: mil, um. Detection: Select RMS, Peak, P-P, True-PK, (True-PK)/PK, Quest Factor David- please put a definition of each here. Labels: Select Ch1, Ch2, Ch3, CH4 or – to cause a pop-up window to show where you can enter your desired label. 4.36 Signal Processing Menu: Setting the filter and integration time for each channel.
  • Page 69 Integration Time: Select 1/1024 sec, 1/512 sec, 1/256 sec, 1/128 sec, 1/64 sec, 1/32 sec, 1/16 sec, 1/8 sec, ¼ sec, ½ sec, 1 sec, 2 sec, or 4 sec. Edit Filter configuration: Select the Edit Filter Configuration to change the filter parameters for each channel.
  • Page 70 When complete, press Return or Save. A window will pop-up asking you to save changes to 0001.vfc. Press OK. The filter file configurations are saved as a .vfc file. 4.37 Recorder Menu: Setting the parameters for automatic recording. Recorder Menu allows the user specify how an interval of measured data will be gathered and recorded.
  • Page 71 Soft Key Menu: Display Press the Display soft key to display the soft key menu. Show Alarm: Selecting turns on the Alarm based on the Alarm Setup parameters. Alarm Setup: Alarms can be set to ISO 10816-3 standard for a variety of machinery using velocity.
  • Page 72 Trend Chart: Select either Vib. – Time or Vib. – RPM. If Vib- RPM is selected, you must have a tachometer connected to generate a RPM signal to trigger the measurement, otherwise, you will not observe a measurement. The above display shows a trend chart of acceleration, Velocity and displacement of channel 1 on the left.
  • Page 73 Review: Selecting Review will bring up a Data review of each of the measurement points saved. The data review menu will display all of the measurement points collected by the user pressing [OK] on the navigation button during the measurement, or from the previously defined record setup that would automatically record the data points.
  • Page 74 Soft key menu: Unit The Tools menu contains several useful utilities, including Calibration, IEPE check, Note and playback. Calibration: Selecting Calibration is for calibrating a sensor (adjusting the sensitivity). When you require sensor calibration prior to measurement, this procedure is used. To begin: 6.
  • Page 75 “Open”. If an IEPE sensor is connected to this channel, open circuit usually means a broken cable. Select “Power” to check the IEPE power supply of your Impaq Elite. To conduct the checking, discount all sensors and select Verify. In normal condition, the power supply of all channels should be around 24.7 Volts.

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