Teledyne HASTINGS 200 Series Instruction Manual page 16
Fast response mass flowmeters
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Also See for HASTINGS 200 Series:
- Instruction manual (19 pages) ,
- Instruction manual (27 pages)
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SYMPTOM:
SYMPTOM:
SYMPTOM:
SYMPTOM: Sensor has proper resistance readings, but little or no output with flow.
SYMPTOM:
CAUSE:
CAUSE:
CAUSE: Plugged sensor.
CAUSE:
CAUSE:
A A A A A CTION:
CTION:
CTION:
CTION:
CTION: Shut off gas supply and power supply. Remove cover and PC board from unit. Remove
sensor assembly and examine. If sensor has evidence of plugging, clean or replace as applicable.
SYMPT
SYMPT
SYMPTOM:
SYMPT
SYMPT
OM:
OM: Flowmeter reads other than 0.00 VDC with no flow, or there is a small flow when
OM:
OM:
flowmeter reads 0.00 VDC.
CA
CAUSE:
CA
USE:
USE:
USE:
ZERO potentiometer is out of adjustment.
CA
CA
USE:
A A A A A CTION:
CTION:
CTION:
CTION: Shut off all flow. Adjust ZERO potentiometer until output reads 0.00 VDC.
CTION:
SYMPTOM:
SYMPTOM:
SYMPTOM:
SYMPTOM: Flowmeter out of calibration and non-linear.
SYMPTOM:
CAUSE:
CAUSE:
CAUSE:
CAUSE:
CAUSE:
Leaks in gas inlet or outlet fittings.
A A A A A CTION:
CTION: Check all fittings for leaks by placing soap solution on all fittings between gas supply and
CTION:
CTION:
CTION:
final destination of gas. Check flowmeter for leaks. Replace "O" rings if required or recalibrate as
necessary.
126B - PAGE 16
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