56
8012707/ZVF9/V2-1/2019-04 | SICK
O P E R A T I N G I N S T R U C T I O N S | GM32
Subject to change without notice
7
CLEARING MALFUNCTIONS
7.2.4
Corrosion on probe or flanges
7.2.5
Measured value blinks
If a measured value blinks: Measured value is “uncertain” (e.g. calibration range
exceeded).
For GMP probe: When all measured values blink: Is the lever for the diaphragm in the
“
open
see “Installing the SR-unit on the device flange”, page 36
7.3
Error messages
7.3.1
Example of an error message
Fig. 38: Example of an error message
Error
Possible causes
Remedy
Sample gas penetrating the
area before the SR-unit.
●
Gas pressure in gas duct
too high.
▸
Check project planning.
●
Purge air unit has failed or
is too weak.
▸
Check purge air unit.
▸
Plan redundant purge air unit.
▸
Strengthen purge air unit.
Sample gas penetrating the
GMP probe.
●
Purge air unit has failed or
is too weak.
▸
Check purge air unit
▸
Plan redundant purge air unit.
▸
Strengthen purge air unit.
Table 16: Error diagnosis - sample gas penetrating
Error
Possible causes
Remedy
Corrosion on probe, filter
cuvettes (GPP) or flanges
●
Unsuitable materials
▸
Check project planning.
Table 17: Error diagnosis - corrosion on flange
Message number/
number of messages
Date (dd/mm)
Time (hh:mm:ss)
Initiator, footnote,
Error message,