wtw inoLab Multi 9620 IDS - 15.3 Dissolved oxygen; 15.4 Conductivity

What to do if... inoLab
®
Multi 9620 IDS
128 ba77173e04 12/2017
15.3 Dissolved oxygen
Error message,
OFL
Error message,
Error
15.4 Conductivity
Error message,
OFL
Error message,
Error
More information and instructions on cleaning and exchange of
sensors are given in the documentation of your sensor.
Cause Remedy
– Measured value outside the measur-
ing range
– Select a suitable measuring
medium
Cause Remedy
– Sensor contaminated – Clean the sensor
– Measured temperature value outside
the operating conditions
(display of OFL/UFL instead of a
temperature value)
– Keep to the temperature range
for the test sample
– Defective sensor – Calibration
– Exchange the sensor cap
– Replace the sensor
More information and instructions on cleaning and exchange of
sensors are given in the documentation of your sensor.
Cause Remedy
– Measured value outside the measur-
ing range
– Use suitable IDS conductivity
sensor
Cause Remedy
– Sensor contaminated – Clean the sensor and replace it
if necessary
– Calibration solution not suitable – Check the calibration solutions