Problems And Troubleshooting - Lovibond Tintometer SD 305 pH/ORP Mode D'emploi

9 Problems and troubleshooting

Problem Cause
Battery is flat
No display
or distorted
Mains adapter operation:
characters
Incorrect voltage / polarity
System error
Instrument
does not
respond to a
button press
Instrument faulty
Menu items Logger data stored in the archive
not visible
LoGG FULL Data memory full
The measuring range is exceeded
Err. 1
Sensor faulty
Measuring range not reached
Err. 2
Sensor faulty
System error
Measuring range significantly
Err. 7
exceeded or not reached
The pre-set calibration interval
> CAL <
has elapsed or the last calibration
was invalid
Incorrect buffer solution
CAL
Buffer solution contaminated
Err. 1
Electrode is faulty
Slope is too shallow:
CAL
Electrode is faulty
Err. 2
Buffer solution contaminated
Slope is too steep:
CAL
Electrode is faulty
Err. 3
Buffer solution contaminated
CAL
Incorrect calibration temperature
Err. 4
54
Remedy
Insert a new battery
Display of the selected measuring
location
Disconnect the battery and mains
adapter, wait a while,
then reconnect
Send in for repair
Delete measurement data
Delete the data memory
Check whether the measurement
value is above the sensor's
permissible measuring range
Replace the sensor
Check whether the measurement
value is below the sensor's
permissible measuring range
Replace the sensor
Send in for repair
Check: Is the measurement value
within the sensor's permitted
range?
The instrument must be calibrated
Always use the neutral buffer as
the first solution.
(Exception: 1-point calibration)
Use fresh buffer solution
Clean / renew the electrode, then
re-calibrate it. If there is a further
error: replace the electrode
Replace the electrode
Use fresh buffer solution
Replace the electrode
Use fresh buffer solution
Calibration can only be carried
out between 0 and 60°C
SD_305_pH/ORP_1 04/2021