9100c
4-24 M1207026
4.5.8 Flow Sensor
Negative
The Flow Sensor Negative Calibration should be preformed:
• when the machine is first put into service.
• at prescribed, planned maintenance intervals.
• after the pneumatic vent engine has been serviced.
• Whenever the flow sensor is replaced.
Note The Paw Zero, Paw Gain, Flow Zero must be calibrated before the
Flow Sensor Negative Calibration. Select the Calibration
Coefficient menu, set the calibration coefficient as marked on the
calibration orifice before the Flow Sensor Negative Calibration.
Calibration Setup To perform the flow sensor negative calibration, connect the
calibration tools as in the Flow Sensor Positive calibration but reverse
the direction of the flow sensor by connecting the small port to the
calibration fixture and the large port to the calibration pipe.
Ensure that the test tubing is leak free.
Calibration Procedure 1. To start the Flow Sensor Negative Calibration, select “Start”.
2. Reassemble the bellows assembly upon the completion of
calibration.
Remarks The data is stored in EEPROM and is used during normal operation
to compensate for the individual flow sensor output characteristics.
M1207027 004 MANUAL−DOC, Technical Reference Manual, Technical Reference Manual for 9100c, English−default
Reproduced from the electronic master in MATRIX
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