M88250 Factory Calibration

M88250 Factory Calibration

M88250 is our Casing Vibration Module for our Inductive Velocity Sensor IRD544M. It measures Vibration Amplitude either in Displacement or Velocity. We commit an accuracy of +/- 1% of Full Scale for this Dual Channel Vibration Measurement Card. To check whether or not the card is calibrated, we perform the following:
  1. Insert the Card into a IRD8800 Rack
  2. Provide the Rack/Card with the rated power supply (230 V AC or 24 V DC as specified)
  3. Connect the input to a Function Generator
  4. Provide an Input of Frequency 100 Hz and Amplitude 468 mV RMS from the Function Generator
  5. Observe the Display and 4-20 mA output on the M88250 card. To observe 4-20 mA output, we use a Multimeter
If the card is calibrated, then at sensitivity setting of 42.42 mV/mm/sec, it should read 15.6 mm/sec peak +/- 1% and for a full scale of 150 mm/sec peak it should display 4-20 mA output of 5.664 mA +/- 1%

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