Instruction manual

6 Troubleshooting
55
6.2 Out of the measurement range
When the measured value has exceeded the predefined measurement range, the sub-display
shows “oF” with blinking.
If that happens, follow the instructions given below.
Code Causes or possibilities Remedies
oF
(out of the
measurement
range)
The sensor is not soaked into the sample
liquid.
Set the sensor in a way that it may be soaked in
the sample liquid even if the level of the sample
liquid changes.
The protective cap of the sensor is placed
on.
Remove the protective cap.
z Wrong wiring for the sensor cable
Especially, suspect disconnection of the
G and R lines.
z Wrong wiring for the junction cable
Check if screws are loose or the wiring is wrong
with the terminal block on the back of the
instrument or the one of the relay box.
The measurement range has not been set
properly.
Set the measurement range suitable for the
sample solution.