Endress+Hauser Liquisys M CPM223, Руководство по эксплуатации

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Trouble-shooting Liquisys M CPM223/253
88 Hauser
E154
Below lower alarm threshold for
period exceeding alarm delay
Perform manual comparison measurement if
necessary. Service sensor and recalibrate.
Yes No No
E155
Above upper alarm threshold for
period exceeding alarm delay
Yes No No
E156
Actual value undershoots alarm
threshold for longer than the set
permissible maximum period
Yes No No
E157
Actual value exceeds alarm threshold
for longer than the set permissible
maximum period
Yes No No
E162 Dosage stop
Check settings in the CURRENT INPUT and
CHECK function groups.
Yes No No
E164
Dynamic range of pH converter
exceeded
Check cable and sensor. Yes No —
E166
Dynamic range of reference
converter exceeded
Check cable and sensor. Yes No —
E168
Warning: ISFET leakage
current > 200 nA Check ISFET for abrasion and air-tightness, replace
as soon as possible.
No No No
E171 Flow in main stream too low or zero Restore flow. Yes No No
E172
Switch-off limit for current input
exceeded Check process variables at sending measuring
instrument. Change range assignment if necessary.
Yes No No
E173 Current input < 4 mA
Check process variables at sending measuring
instrument.
Yes No No
E174 Current input > 20 mA
Check process variables at sending measuring
instrument. Change range assignment if necessary.
Yes No No
E175 SCS glass warning
Check electrode for glass breakage or hair-line
cracks;
Check medium temperature.
Measurement can continue until the error occurs.
No No No
E177 SCS reference electrode warning
Check electrode for contamination and damage;
clean electrode; measuring can continue until the
error occurs.
No No No
1) If this error occurs, there is no possibility of starting a cleaning session (field F8 not applicable with this error).
Error
no. Display Tests and/or remedial measures Alarm contact Error current Autom. cleaning
start
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