Endress+Hauser Liquiline CM44P - Page 153

Liquiline CM44P Diagnostics and troubleshooting
Endress+Hauser 153
No. Message Factory settings Sensor
type
Tests or remedial action
S
1)
D
2)
F
3)
509 Sensor calibration M On Off P, O, I, DI Min. slope warning, measurement can
still take place
Possible reasons: sensor old or defective,
reference blocked, calibration solution
too old or contaminated
1. Check or replace sensor.
2. Check or replace calibration
solution.
3. Repeat calibration.
511 Sensor calibration M On Off P, O, I, DI Max. slope warning, measurement can
still take place
Possible reasons: sensor old or defective,
reference blocked, calibration solution
too old or contaminated
1. Check or replace sensor.
2. Check or replace calibration
solution.
3. Repeat calibration.
513 Zero Warning M On Off O (amp.),
DI
Zero point warning, measurement can
still take place
Possible reasons: sensor old or defective,
reference blocked, calibration solution
too old or contaminated
1. Check or replace sensor.
2. Check or replace calibration
solution.
3. Repeat calibration.
515 Sensor calibration M On Off P (ISFET) Max. operating point warning,
measurement can still take place
Possible reasons: sensor old or defective,
reference blocked, calibration solution
too old or contaminated
1. Check or replace sensor.
2. Check or replace calibration
solution.
3. Repeat calibration.
517 Sensor calibration M On Off P (ISFET) Min. operating point warning,
measurement can still take place
Possible reasons: sensor old or defective,
reference blocked, calibration solution
too old or contaminated
1. Check or replace sensor.
2. Check or replace calibration
solution.
3. Repeat calibration.