M88250 Calibration Procedure

M88250 Recalibration Procedure

The below steps are for calibration in mm/sec pk for Module M88250. The same steps can be repeated by changing display units to mm/sec RMS or microns pk-pk or microns pk.

Pre-Requisites
  1. Function Generator with Ability to generate Sine Wave (choose an accurate and calibrated function generator with +/- 1% accuracy)
  2. Multimeter with Ability to read Ampere, Voltage and Frequency (choose an accurate and calibrated multimeter with +/-1% accuracy)
  3. M88250 Module and IRD8800 Rack with suitable power supply
  4. Connecting Cables for Connection of Function Generator to M88250 Module
Procedure:
  1. Insert M88250 module into IRD8800 Rack and provide required Power Supply to Turn On the Module
  2. Connect your Function Generator to the M88250 Module via the backplane terminals. Signal Input goes to Terminal 1 of Channel A and Terminal 25 of Channel B. Signal Ground goes to Terminal 2 of Channel A and Terminal 26 of Channel B.
  3. Long Press the PROG button on the front panel of the module M88250.
  4. It will ask for a Password. Set the Password to '0001' to enter into the Calibration Menu
  5. Once inside the Calibration Menu, use the PROG button to move forward to the screen which displays Input A Span Cal.
  6. Once on the above screen, provide a Sine Wave Input from the Function Generator at a Frequency of 100 Hz and Amplitude of 4689.6 mV AC RMS. You can verify your Function Generator input using the Multimeter. The screen will show a saved static count (factory set) and a live count. Save the live count after applying input from Function Generator. Press the UP Arrow button to save the count.
  7. Repeat the steps 5-6 for Channel B
  8. Now that the Full scale value has been saved as counts within the card for channel A and B, move to the screen which shows Input A Zero Tare.
  9. Remove the Input provided using the Function Generator and short the terminals 1 and 2 (channel A) and terminals 25 and 26 (channel B)
  10. The Screen will show a saved static count (factory set) and a live count. Save the live count using the UP Arrow Button.
  11. Repeat the Steps 9-10 for Channel B
  12. Exit the Calibration Menu using PROG and Exit to Bargraph
The Calibration is now done and the user can set a full scale vibration using the default programming menu and can also set balance parameters within the module to their liking.