Siemens SIPROCESS GA700 Operating Manual page 258

Alarm, error, and system messages
7.2 OXYMAT 7 message list
Message
No. Text
11 Maximum temperature exceeded.
Heaters turned off automatically.
15 Sample gas pressure outside
tolerance
18 Reference gas pressure too low
22 Calibration tolerance exceeded at
zero point
23 Validation tolerance exceeded at
zero point
24 Calibration tolerance exceeded at
span point
25 Validation tolerance exceeded at
span point
27 Signal frequency changed
28 Control reserve used up
29 to Zero drift MR1 to MR4 outside
32 tolerance
33 Measured value greater than full-
scale value
34 Analyzer module temperature not
in permissible range
258
Cause
Safety function
Ambient temperature too high
•
One or more heater control loops
•
faulty
Pressure sensor faulty
•
Reference gas open, sample gas
•
input/output closed
Reference gas pressure - sample
•
gas pressure < 2 000 hPa
Sample gas path closed
•
Reference gas path leaking
•
Zero gas changed, setpoint faulty
•
Incorrect reference gas
•
Drift probe
•
Calibration successful
Span gas changed, setpoint faulty
•
Incorrect reference gas
•
Drift probe
•
Calibration successful
Frequency change executed
Difference of O concentration be-
2
tween zero gas and reference gas
too large.
Gas line dirty, gas cooler faulty
•
Gas lines leaking
•
Incorrect zero gas or setpoint
•
faulty
Sample gas concentration too
•
high
Sample gas pressure too
•
high/outside pressure correction
range
Device is operated outside the per-
mitted ambient temperature range
Remedy
Check ambient temperature
•
Check the other messages includ-
•
ing the logbook and act accord-
ingly
Set sample gas pressure to per-
•
mitted range.
If sample gas input/output is
•
closed, the reference gas must be
turned off.
Replace analyzer module
•
Check pressure of reference gas
•
source
Check flow of reference gas, see
•
operating instructions.
Check setpoint
•
Check reference gas
•
Replace analyzer module
•
Execute zero point calibration
Check setpoint
•
Check reference gas
•
Replace measuring head
•
Execute span calibration
Normalization required; contact Ser-
vice if necessary
Check zero gas, reference gas
•
pressure
Carry out zero and full-scale val-
•
ue calibrations
Check gas preparation, e.g.,
•
check filter
Check gas lines for leaks
•
Check setpoint
•
Check sample gas concentration
•
Check sample gas pressure
•
Execute span gas calibration
•
Check ambient temperature
Operating with the Local User Interface
Operating Manual, 06/2017, A5E31930478-05