Dynisco PT460DN, Руководство по эксплуатации

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TROUBLESHOOTING
10. 10.
10. 10.
10. T TT
TT
ROUBLESHOOTING ROUBLESHOOTING
ROUBLESHOOTING ROUBLESHOOTING ROUBLESHOOTING
Symptom Symptom Symptom Symptom Symptom Corrective Actions Corrective Actions Corrective Actions Corrective Actions Corrective Actions
Output Not at Zero 1) Preform Set Zero Service
Output is Negative at Zero Pressure 1) Process temperature has cooled down since last Set
Zero. Wait for process to fully heat up to operating
temperature.
2) Transducer has lost its fill due to diaphragm damage or
rupture.
Large Zero Shift when screwing 1) Check mounting hole for frozen polymer.
in to mounting hole 2) Check transdcuer tip for damage
3) Check mounting hole for concentricity by using gauge
plug in transducer cleaning tool kit (p/n 200100) to check
for side loading of the transducer tip. Dykem bluing should
only be rubbed off at the 45° sealing surface and threads.
Rework hole to proper specifications.
4) Check mounting torque is within specifications.
No response to changes in 1) Check Port/Piping for blockage or solidified polymer
applied pressure 2) Check Transducer tip for diaphragm damage, rupture or
missing
3) Check Flexible Capillary for visible damage like
pinched, Crushed, over-extended armor on the capillary
Output not linear 1) Check for dented diaphragm
2) Check for frozen polymer on tip
Erroneous Pressure Reading 1) Check Data Units/Engineering units for correct setting
2) Was Transmitter zeroed at process operating
temperature with no pressure applied
3) Check mounting hole for proper depth dimension.
Transmitter tip may be recessed too far from polymer flow
and pressure sensing may be deadened from polymer
buildup in from of tip
4) Check mounting hole for concentricity by using Gauge
Plug in transducer cleaning tool kit (P/N 200100) to check
for side loading of transducer tip. Dykem bluing should
only be rubbed off at the 45° sealing surface and threads
5) Remove and check Transmitter tip for damage. Tip
face should be free of dents or tears in the diaphragm
material. It should be completely flat and free of frozen
polymer