Adash A4900 - Vibrio M User Manual
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Adash A4900 - Vibrio M User Manual

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Adash 4900 - Vibrio M
User's Manual
Version 4.00 and later
Applications and Key Features:
Machine vibration diagnostics
Bearing diagnostics
Lubrication diagnostics
Route measurements (4MB memory)
Service activities
Product Inspection
Ex version available
Wideband RMS or PEAK measurements of acceleration, velocity and displacement
Velocity measurement from 10Hz, optionally from 1 Hz for low speed machines
Time signals measurement
Spectrum FFT analysis
Measurement in frequency bands for bearing diagnostics
Store data and perform route measurements
Built-in ISO 10816 limits
Fault Source Identification and Diagnostics Tool
Headphones for "listening to vibration"
Built-in Infrared Thermometer
Built-in stroboscope lamp
Built-in torch
Detection of machine and bearing conditions
Detection of machine speed
Overload indicator, sensor fault and cable fault indicators
For USA Sales and Support: AdashAmerica
1-888-817-4335
info@adashamerica.com

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  • Page 1 Adash 4900 - Vibrio M User’s Manual Version 4.00 and later Applications and Key Features: Machine vibration diagnostics Bearing diagnostics Lubrication diagnostics Route measurements (4MB memory) Service activities Product Inspection Ex version available Wideband RMS or PEAK measurements of acceleration, velocity and displacement...

  • Page 2: Table Of Contents

    Instrument and accessories .....................13 Before You Start .........................14 Standards for vibration measurements ................15 Adash Limit Values of Machine and Bearing Vibrations ...........16 ISO 10816 limit values .....................17 Classification according to machine type, nominal power or shaft height........17 ISO Groups 1-4 classifications define the following types of machinery:........17 Classification according to foundation ..................
  • Page 3 Spectrum 200 Hz– Detection of Looseness ..............50 Time signal for bearing condition evaluation ..............51 Vibrations in frequency bands – gearboxes/bearings............53 Fault Source Identification and Diagnostics ..............54 Adash 4900 – Vibrio M Specifications ................55 Response specification ....................56 Calibration ........................56 Vibration velocity measurement frequency response ............56 Vibration acceleration measurement frequency response ..........56...
  • Page 4 Certificated accessories....................60 Accelerometer AC90x......................... 60 Battery............................60 Headphones ..........................60 The unit sticker ........................61 Adash 4900 - Vibrio MP (proximity option)...............62 Switch On of Instrument....................62 Screens ...........................63 Speed enter ..........................63 DC offset............................. 63 Displacement in 1-1000Hz range ....................63 Spectrum 1000Hz or 2500Hz .....................

  • Page 5: Why Perform Vibration Diagnostics

    Adash 4900 – Vibrio M Why perform vibration diagnostics ? Vibration diagnostics allows you to check the health condition of all your machinery. By utilizing vibration monitoring on a routine basis, you will be informed early about potential failure before the machine gets damaged and you will be able to order only required maintenance (instead of expensive overhauls).

  • Page 6: Why A4900 - Vibrio M

    You should not equate our unit with "vibration pens". The Adash model A4900 is a multi-function portable meter and data-collector that bridges the gap between the basic and advanced FFT data-collector/analyser. It is a complete machine condition expert system than gives results without the use of a computer or laptop.

  • Page 7: The Instrument Memory

    A pre-defined list of required measurements can be prepare in the DDS2014 software on your computer. Once the route is created, you load the list to the A4900 - Vibrio M instrument through a USB connection. Then the standard route arrangement is available while in the field. You see the name of sensor location on the screen (example Motor Outboard Horizontal -MOH), mount the sensor to that point and take the measurement.

  • Page 8: Vibration Diagnostics - Basic Information

    Adash 4900 – Vibrio M Vibration Diagnostics - Basic Information Introduction What is vibration diagnostics? This chapter explains the basic steps you will need to be able to begin practical measurements. When we are talking about vibration diagnostics, we mean routine measurements (usually every 2-4 weeks), whose primary objectives are: 1.

  • Page 9: Machine And Bearing Condition Diagnostics

    Adash 4900 – Vibrio M Machine and bearing condition diagnostics Basic defects: - unbalance (heavy spot on the rotor causes vibrations), - misalignment (machinery parts are not in alignment ), - looseness (machine is not properly connected with its base - soft foot), - bearing defect (wear of bearing, bad assembly, bad lubrication or overload).

  • Page 10: Fault Source Identification And Diagnostics Tool

    Fault Source Identification and Diagnostics Tool (FASIT) This tool is included in the Adash 4900 - Vibrio M. This type of auto-analysis function is hard to find in this price category. This tool displays several bar graphs with traffic light colors. The two major (largest) bars are allocated to general machine condition (on the left side) and ball bearing condition (on the right side).

  • Page 11: Preparation Of The Measurement Point

    Adash 4900 – Vibrio M Preparation of the Measurement Location For quality data collection, the measurement point location must be prepared in advance. For regular measurements the sensor must always be fixed in the same way at the same point. For bearing diagnostics it is necessary to fix the sensor with a magnetic base.

  • Page 12: Listening To Vibration Using Headphones

    In the end put the cover on the pad. Listening to Vibration Using Headphones A user can connect headphones to the Adash 4900 – Vibrio M instrument, since listening to a measurement signal also enables a differentiation of the problem type. People think that this is an old method, which does not have a place in this modern world.

  • Page 13: What Will You Get With Your Instrument

    - coiled cable to connect vibration sensor - headphones - measuring tip for putting manual pressure on vibration sensor - 1.5V alkaline batteries - CD with the manual Fig. Adash 4900 – Vibrio M with accessories For USA Sales and Support: AdashAmerica 1-888-817-4335 info@adashamerica.com...

  • Page 14: Before You Start

    Adash 4900 – Vibrio M Before You Start Ignoring any of the recommendations mentioned below may cause failure of the instrument. Handling voltage higher then 24 V can cause an accident. 1. Always connect only ICP type sensors into an ICP marked socket ! If unsure, consult your supplier.

  • Page 15: Standards For Vibration Measurements

    Therefore, the standards should be determined for a narrow range of machines. The A4900 - Vibrio M contains Adash limit values and ISO 10816 limit values. Adash limits are not rewritten from any existing standard. It’s a result of 20 years of Adash engineering team experiences.

  • Page 16: Adash Limit Values Of Machine And Bearing Vibrations

    Adash 4900 – Vibrio M Adash Limit Values of Machine and Bearing Vibrations Graphs, according to which the instrument determines acceptable vibration limits depending on machine speed. Unbalance, misalignment, and mechanical looseness: 0.24 0.16 0.12 0.08 0.04 1000 1500 2000...

  • Page 17: Iso 10816 Limit Values

    It contains 3 tables of values, which are applicable for the A4900 - Vibrio M unit. Classification according to machine type, nominal power or shaft height Select the Group that best describes the general size, type, and speed of the machinery being measured.

  • Page 18: Classification Of Vibration Values For Machines Groups 1 And 3

    It’s possible to set up these values directly in the unit. Then the measured values are displayed in traffic light colors as mentioned earlier. You can choose to use the Adash limits (recommended) or 10-816 limits. To change the values referenced, visit the menu under the mode SETUP (see instrument operation).

  • Page 19: Quick Start

    Adash 4900 – Vibrio M Quick Start The aim of this chapter is to introduce you to the instrument, and, without reading a complete User’s Guide, enable you to measure vibration values. This chapter does not describe full and detailed operation of this instrument or measurement methodology.

  • Page 20: Plugging In Vibration Sensor

    Adash 4900 – Vibrio M Fig. Placement of power batteries Fig. Proper cell polarity Plugging in Vibration Sensor To measure a vibration signal we need to plug in the vibration sensor with ICP power. The plugged in sensor must be a standard accelerometer with 100 mV/g sensitivity. The instrument is equipped with its own source of ICP power for connected sensor.

  • Page 21: Connectors - Top Panel

    Adash 4900 – Vibrio M Connectors - top panel Micro-USB Accelerometer input Contact-less IR temperature sensor LEDs for stroboscope and torch Headphones output 3,5 mm jack For USA Sales and Support: AdashAmerica 1-888-817-4335 info@adashamerica.com...

  • Page 22: Vibration Measurements

    Adash 4900 – Vibrio M Vibration Measurements Screw the sensor onto the magnetic base. Do not forget to remove the plastic cover and the metal washer (it closes a magnetic field for longer service life of the magnet) before measuring. Place the plastic cover and the metal washer back on the magnet after measuring.

  • Page 23: Automatic Detection Of The Machine Speed

    Special functions are included in the instrument for detection of these three states. The overall vibration values are colored based on the amplitudes. The vibration limits Adash sets for each state are determined from the graphs, which are printed in the Adash Limit Values of Machine and Bearing Vibrations chapter. Page 16 Fault Source Identification and Diagnostics Tool Press the left arrow on the screen No.1 and the Fault Source Identification and Diagnostics screen...

  • Page 24: The Stroboscope

    Menu chapter for details. The Torch You sometimes need to inspect or read the dark corners. For that purpose, the A4900 - Vibrio M has a built-in torch in the front panel. See the Menu chapter for details. For USA Sales and Support: AdashAmerica 1-888-817-4335 info@adashamerica.com...

  • Page 25: Using Headphones

    Adash 4900 – Vibrio M Headphone Use The instrument is equipped with a 0.5 W amplifier for connecting the headphones and listening to a measured signal. We can connect the headphones with a stereo 3.5 mm jack marked 'phones' on the top of the instrument (see figure in the Connectors chapter).

  • Page 26: Instrument Operation

    Adash 4900 – Vibrio M Instrument Operation Switching on and off The instrument is switched on by pressing of the middle button Instrument on / off button Fig. Buttons / Switching on the instrument Provided that batteries with sufficient voltage are placed in the instrument, then a display will show an instrument Logo.

  • Page 27: Standby Mode

    Adash 4900 – Vibrio M Standby mode When the user does not press any button for 10 minutes, the instrument changes from the standard run mode to the Standby mode - the screen is darkened. When the user does not operate the instrument within the next 30 minutes, the instrument switches off.

  • Page 28: Selection Of Measurement

    Adash 4900 – Vibrio M Selection of Measurement A selection of measuring screen (method) can be performed by arrow buttons ▼ ▲. After pressing a button, an “empty screen” is shown without measured data, and the measurement starts. Measuring screen selection buttons Fig.
  • Page 29 Adash 4900 – Vibrio M Overall PEAK values Measurement of peak vibration values in the ranges: 10 Hz - 1000 Hz in mm/s, 0.5 kHz - 16 kHz in g, Spectrum 200 Hz - looseness detection FFT analysis of vibration in the range: 0 Hz - 200 Hz in mm/s RMS with display of 3 maximum peaks found.
  • Page 30 Adash 4900 – Vibrio M Vibrations in frequency ranges – gearbox/bearing Measurement of RMS vibration values in the ranges: 0.5 kHz - 1.5 kHz in g, 1.5 kHz - 5 kHz in g, 5 kHz - 16 kHz in g.
  • Page 31 Adash 4900 – Vibrio M Temperature measurement is displayed in Celsius and Fahrenheit degrees. The colored bar is used. The ranges of colors are as follows: for less than 30°C - green, 30-45°C - yellow, 45-60°C - orange, 60- 75°C - red and for greater than 75°...

  • Page 32: Speed Detection And Definition

    Adash 4900 – Vibrio M Speed detection and definition After switching on the instrument, Screen No.1 appears and the automatic speed detection begins. The detection procedure is displayed as a running bar at the bottom of screen. The result is also displayed on the bottom.

  • Page 33: Menu For Functions Selection

    Adash 4900 – Vibrio M Menu for functions selection button, the screen for next choice of data collection appears. (if memory function is By pressing available). By pressing the Menu button (left upper) the instrument menu appears. If the instrument is in the error state (for example “SENSOR ERROR“), then some functions are not available.

  • Page 34: Light - Torch

    Adash 4900 – Vibrio M If an error is detected (e.g. “SENSOR ERROR"), then some items are not available. Move between items by pressing ▼ ▲ buttons. Select item by pressing button. Use - ESC for return from Menu. Fig.: Instrument MENU.

  • Page 35: Memory

    Adash 4900 – Vibrio M MEMORY The next list option contains several items, which are enabled to work with memory. ROUTE See the special chapter Using the memory/ Route measurement for details. VIEW This item allows you to view off route stored data properties. The first line contains the memory address (do not think about it).

  • Page 36: Volume

    Adash 4900 – Vibrio M VOLUME The volume bars appear. The volume is changed by buttons ▼ ▲. When the maximum volume is reached, the symbol will become orange otherwise the amount of yellow filling shows the actual volume. If the headphones are off, the symbol is grey. Next press of the button returns the instrument back to the measurement mode.

  • Page 37: Setup

    Adash 4900 – Vibrio M SETUP Further functions menu appeared. Choose requested function using arrows and confirm by Enter. SPEED Switch on (AUTO ON) or switch off (AUTO OFF) automatic detection of RPM. If manual entry is required, use AUTO OFF.

  • Page 38: Alarms

    Standards setup, Alert limits (yellow color) and Danger (red color) will be defined. See Standards for Vibration Measurements chapter. Chosen standard is displayed above the machine symbol (F13 in this case). If Adash standard is chosen, nothing is displayed. MEASURE - UNITS To change the UNITS, go to SETUP menu and then MEASURE menu.

  • Page 39: Measure - Displacement Value

    Adash 4900 – Vibrio M Vibration speed unit can be chosen here. mm/s (millimetres per second) for Metric units and ips (inch per second) for Imperial units are available. Device remembers the chosen unit even after switch off. MEASURE - DISPLACEMENT VALUE Displacement value setup.

  • Page 40: Esc

    Adash 4900 – Vibrio M -ESC- Returns to the measurement screen. Error Messages Sensor Connection Error When an incorrect connection of the sensor, unsuitable sensor type, or broken cable (etc.) is detected, then the temperature screen occurs and the error message is written above the values.

  • Page 41: Input Overload Error

    Adash 4900 – Vibrio M Input Overload Error If an input signal is too strong (higher than 12V peak) and the instrument cannot process it, the overload error is displayed. The instrument is not capable of measuring this signal. Measurement Error If there is a break in communication between measuring and display boards inside of the instrument, this measurement initialization error is displayed (MEAS INIT).

  • Page 42: Using The Memory

    (Advanced version only) Off-Route Measurements With the A4900 - Vibrio M instrument you can store all measured data (measurement screens) to the memory (except for the FASIT screen). Each measurement is stored to a specific address (measurement point) from 1 to 250. Each point can contain several stored measurement screens - measured data.

  • Page 43: Measurement Screen No.1 Properties

    Adash 4900 – Vibrio M - Escape to the measuring screen - Confirm Save data - Go to address screen Press ACK button to confirm data storing to selected point. The instrument returns back to measurement screen after data storing.

  • Page 44: Measurement Screen No.3 Properties

    Adash 4900 – Vibrio M Measurement Screen No.3 Properties Stored data: Velocity time 1 - 1 000 Hz [mm/s] 2048 samples Velocity spectrum 1 - 1 000 Hz [mm/s] 800 lines Measurement Screen No.4 Properties Stored data: Acceleration Demod-Envelope RMS 500 - 16 000 Hz [g]...

  • Page 45: Measurement Screen No.6 Properties

    Adash 4900 – Vibrio M Measurement Screen No.6 Properties Stored data: Displacement RMS 2 - 100 Hz [µm, mil] Displacement 0 - Peak 2 - 100 Hz [µm, mil] Displacement Peak - Peak 2 - 100 Hz [µm, mil] Measurement screen No.7 FASIT properties Stored data: No data are stored.

  • Page 46: Route Measurements

    Use the USB cable and connect A4900 - Vibrio M to your PC. Then use DDS 2014 software to load the route from PC into instrument. The A4900 - Vibrio M can only hold one route at a time. See the DDS2014 manual for more details.
  • Page 47 Adash 4900 – Vibrio M - Escape from the route - Go to point level of selected machine - Return Back to machine level Measurement point level Route screen - point level < - , + > - Movement between particular points - Selection of point and entry to measurements After pressing middle SEL button next screen appears.
  • Page 48 Adash 4900 – Vibrio M < - , + > - Change of measurement point DONE - Return Back to selected point Indication of saved data Route point without data Measured route point For USA Sales and Support: AdashAmerica 1-888-817-4335...

  • Page 49: How To Evaluate The Failure

    Adash 4900 – Vibrio M How to Evaluate a Failure The instrument shows measurement results on several separate screens. We shall describe basic rules for their use. Overall RMS Values - Machine symbol - this line shows RMS velocity vibration value in mm/s or ips, which is excited on the machine by mechanical phenomena related to: - imbalance of rotational parts of the machine (fan wheel, impeller, clutch wheel etc.),...

  • Page 50: Overall Peak Values

    Adash 4900 – Vibrio M 2.ALERT - YELLOW COLOR A beginning defect has been found on the machine. It is possible to operate with close attention while planning repair. 3. DANGER – RED COLOR There is an serious defect found on the machine. Machine should not be in operation.

  • Page 51: Time Signal For Bearing Condition Evaluation

    Adash 4900 – Vibrio M This screen is important for the detection of mechanical looseness. When the graph shows a number of lines (typically 3 or 4) with the same space between them and the first line is on the speed frequency (see the value description on the bottom) then mechanical looseness is the most likely problem.
  • Page 52 Adash 4900 – Vibrio M Undamaged bearing – wrong lubrication: The time record shape is steady too but it has bigger amplitude then previous case. You can clearly see different (bigger) range of the graph (1.0 g) Damaged bearing: There are clearly visible shocks caused by a rolling element coming across the damage like pitting or crack here.

  • Page 53: Vibrations In Frequency Bands - Gearboxes/Bearings

    Adash 4900 – Vibrio M Vibrations in frequency bands – gearboxes/bearings When we need to find the failure on a more complex machine (e.g. gearbox) then it is very useful to know the vibration values in several frequency bands. Screen No. 6 shows measurement acceleration values in three frequency bands: 0.5 –...

  • Page 54: Fault Source Identification And Diagnostics

    Adash 4900 – Vibrio M Fault Source Identification and Diagnostics (FASIT) Description of the FASIT tool has been described in the beginning of this guide. This screen can be found after screen No.6 (by pressing the right arrow). For correct evaluation the speed must be defined. The instrument can do it automatically or by user manual entry.

  • Page 55: Adash 4900 - Vibrio M Specifications

    Adash 4900 – Vibrio M Adash 4900 – Vibrio M Specifications Input: 1x ICP powered accelerometer Sensor accelerometer AC150 (genuine CTC AC-150) sensitivity 100mv/g +/-15% frequency response +/-3dB in 1-10000Hz Input range: 60g PEAK with standard 100mV/g sensor (e.g.600g PEAK for 10mV/g sensor, the sensitivity is editable in the unit)

  • Page 56: Response Specification

    Adash 4900 – Vibrio M Response specification Adash 4900 - Vibrio M Calibration Each unit is calibrated in AC voltage using the pure sine signal generator. All graphs and values below are measured in this way. The accelerometer is not used for the calibration, because the frequency response oscillates +/-3dB (it is -30%-+40%) in 1-10000Hz range.

  • Page 57: Velocity Measurement Amplitude Response

    Adash 4900 – Vibrio M Velocity measurement amplitude response Measurement accuracy for RMS vibration velocity (0,1 – 100 mm/s range) on 80 Hz reference frequency is +/- 2,5 % Acceleration measurement amplitude response Measurement accuracy for RMS vibration acceleration (0,1 – 10 g range) on 8kHz reference...

  • Page 58: Advanced Tests Of Acceleration Measurement

    Adash 4900 – Vibrio M Advanced tests of acceleration measurement Use the shaker and sensor if you are able to shake high frequencies. If your shaker system does not allow it, use the signal generator and switch the ICP off. Contact your re-seller for information on how to switch the ICP off.

  • Page 59: Adash 4900 - Vibrio Ex - The Atex Appendix (Option)

    Adash 4900 – Vibrio M Adash 4900 - Vibrio Ex - The ATEX Appendix (option) Specification according to 94/9/EC (ATEX) directive: II 2 G Ex ib IIC T4 Gb non-mining high protection Gas atmosphere Ex ib Principle of protection - Intrinsic Safety EN 60079-11 , Zone 1.

  • Page 60: Certificated Accessories

    Adash 4900 – Vibrio M Certificated Accessories Accelerometer AC90x ® 0518 II 1 G D Battery Headphones In explosion risk area you can use headphones with impedance 4-32Ohm and max.industance 1mH. For USA Sales and Support: AdashAmerica 1-888-817-4335 info@adashamerica.com...

  • Page 61: The Unit Sticker

    Adash 4900 – Vibrio M The unit sticker Type: A4900 Vibrio Ex 625999 A4900 Vibrio Ex Adash s.r.o., Hlubinská 32 702 00 Moravská Ostrava Czech Republic www.adash.com II 2 G Ex ib IIC T4 Gb FTZÚ 14 ATEX 0130 ≤ ≤...

  • Page 62: Adash 4900 - Vibrio Mp (Proximity Option)

    Adash 4900 – Vibrio M Adash 4900 - Vibrio MP (proximity option) The Vibrio MP contains more measurement options than the standard Vibrio M. Originally these options are designed for measurement with contactless proximity sensors. Such sensors are usually used on protection systems Bently Nevada, Emerson, Epro, … . The buffered outputs on these systems are used for Vibrio MP connection.

  • Page 63: Screens

    Adash 4900 – Vibrio M Screens Speed enter Defining the speed is required in Vibrio MP. The autodetect appears on the first screen. It works in range 3-200Hz and you can switch it off in setup. When you push the central button (USER) you can then enter the speed manually (by using arrows).

  • Page 64: Spectrum 1000Hz Or 2500Hz

    Adash 4900 – Vibrio M Spectrum 1000Hz or 2500Hz In the setup, two ranges are available. You need to choose between the ranges of 1000Hz or 2500Hz. The PEAK-PEAK value on speed frequency and two max peaks in spectrum are displayed below the spectrum.

  • Page 65: Setup

    Adash 4900 – Vibrio M Setup Push the Setup button as in standard Vibrio M. The next list of options appears. RevCnt The number of rotations (defined in setup by user, default 1, max 6) which will be displayed in time waveform screen.

  • Page 66: Sensor

    Adash 4900 – Vibrio M SENSOR The sensor sensitivity. For USA Sales and Support: AdashAmerica 1-888-817-4335 info@adashamerica.com...

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