Emerson Rosemount CT5400, Инструкция по установке, эксплуатации и обслуживанию

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Functional failure diagnostics table Table 7-1:
Step Symptom Test Result
Recommen-
ded actions
Result Cause
1 Gas reading ab-
normal. Check meas-
urement validi-
ty flag. Reading inva-
lid. Refer to step 3.
Reading valid. Perform a new
zero and span
calibration to
ensure calibra-
tion factors are
correct. Readings re-
turn to normal. Sensor re-
quired calibra-
tion.
Abnormal
readings per-
sist. Unknown.
Contact Cas-
cade Technolo-
gies, Ltd.
2A Calibration/vali-
dation drift Check meas-
urement validi-
ty flag. Reading inva-
lid. Refer to step 3.
Reading valid. Perform a new
zero and span
calibration to
ensure calibra-
tion factors are
correct. Readings re-
turn to normal. Sensor re-
quired calibra-
tion.
Drift persists. Refer to step
2B.
2B Check calibra-
tion cylinder. Cylinder near
empty. Replace cylin-
der. Readings re-
turn to normal. Cylinder was
empty.
Drift persists. Refer to step
2C.
2C Check calibra-
tion pipework. Pipework dam-
aged. Replace pipe-
work. Readings re-
turn to normal. Pipework was
damaged.
Drift persists. Unknown.
Contact Cas-
cade Technolo-
gies, Ltd
3 Measurement
invalid flag Check display
controller to
assess which
measurements
are invalid. All gas read-
outs invalid. Use the display
controller to
check pressure
and cell tem-
perature. Pressure and
temperature
are both in
range. Hardware fail-
ure. Contact
Cascade Tech-
nologies, Ltd.
Pressure or
temperature is
out of range. Refer to steps
5 or 6 as appro-
priate.
One gas read-
out invalid. Refer to step 4.
4 Single gas read-
ing invalid. Check which
gas. Any gas. Check fault
reading. Fault reading
active. Use Fault to ac-
cess further di-
agnostic infor-
mation; con-
tact Cascade
Technologies,
Ltd.
Troubleshooting and diagnostics
66 Rosemount CT5400