Endress+Hauser mycom COM 121 Operating Instructions Manual page 41

mycom COM 121 / 151
No. Meaning
28 Sensor alarm.
The alarm message ,, S E N S "
additionally appears on the display
at intervals of 3 seconds.
Note:
This error message is
effective only with matrix
fields V0 / H0 and V0 / H1
selected!
30 Current output simulation switched
on
31 O range for current output 1 too
2
small
34 Temperature range for current
output 2 too small
35 Temperature range for current
output 2 overlaps
100 Calibration voltage after 530 s
outside of 415 ... 913 mV range
(i.e. sensor slope too low
or excessive)
101 Measured value unstable, i.e.
automatic calibration aborted
102 Pressure exceeds measuring range
> approx. 1100 mbar
103 Pressure below measuring range
< 500 mbar
Endress+Hauser
Field
V / H maintenance / troubleshooting
Disturbances ( continued )
0 / 0 Stop measurement. Regenerate
0 / 1 sensor or change diaphragm.
Warnings ( general )
9 / 8 Switch simulation off.
0 / 5 Increase difference
0 / 6 (min. 20 % SAT or 2 mg / l).
0 / 7 Increase difference (min. 10 °C).
0 / 8
0 / 7 Enter new temperature values.
0 / 8
Warnings ( for oxygen )
1 / 0 Check O
1 / 0 Check O
Carry out instrument maintenance
if needed.
Carry out instrument maintenance
if needed.
Measures for
Note:
Also see installation and
operating instructions for
COS 3/COS 3-S sensor
for dissolved oxygen
(BA 065C/07/en)
sensor.
2
sensor.
2
Diagnosis
BE6OM151.CHP
35