Instruction manual

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MODEL Xmt-P SECTION 10.0
TROUBLESHOOTING
SECTION 10.0
TROUBLESHOOTING
10.1 OVERVIEW
The Xmt-P transmitter continuously monitors itself and the sensor for problems. If the transmitter detects a prob-
lem, the word "fault" or "warn" appears in the main display alternating with the measurement.
A fault condition means the measurement is seriously in error and is not to be trusted. A fault condition might also
mean that the transmitter has failed. Fault conditions must be corrected immediately. When a fault occurs the out-
put goes to 22.00 mA or the to value programmed in Section 7.3. The output can also be programmed to reflect
the live measurement.
A warning means that the instrument is usable, but steps should be taken as soon as possible to correct the con-
dition causing the warning.
See Section 10.2 for an explanation of fault and warning messages and suggested corrective actions.
The Xmt-P also displays error and warning messages if a calibration is seriously in error. Refer to the section below
for assistance. Each section also contains hints for correcting other measurement and calibration problems.
Measurement Section
Faults and Warnings 10.2
Temperature 10.3
HART 10.4
pH 10.5
Non-measurement related 10.6
Simulating pH 10.7
Simulating Temp 10.8
Reference Voltage 10.9
NOTE
A large number of information screens provide diagnostics to aid troubleshooting. The most useful of
these are sensor slope and offset and glass impedance. To view the information screens, go to the main
display and press the
q
key.