Maintenance; Causes And Solutions - dosatron D132 GREEN LINE Série Manuel D'utilisation

Measuring electrodes
Press the calibration button for 5 seconds; the unit will automatically
calibrate itself to 1.4 mS (+/- one digit)
If calibration fails, the EC reader will show (---). In this case, the device is
likely to be faulty or the conductivity of the reference solution being used is
not 1.4 mS. (Please refer to the next chapter)
EC PROBE MAINTENANCE
In order to work properly, the 2 measuring electrodes of the EC probe must
be clean and in good condition (not broken or bent).
When the EC probe has not been used for over 1 month, the two electrodes
must be cleaned with fine grade emery cloth.
In case of failure, the probe cable must be checked using an ohmmeter
- One of the probe electrodes is connected to the white wire
- The other electrode is connected to the blue wire.
- The "NTC" thermistor probe is connected between the red and the white
wires (10 K at 25°C)
If any of the three measurements shows incorrect readings, your EC probe
is to be replaced.
NOTE: Measurements shall be made with the EC reader wiring disconnected.
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PLEASE NOTE:
THE STAINLESS STEEL
ELECTRODES MUST NOT
TOUCH THE BOTTOM OF THE
CONTAINER.
THEY MUST BE SUSPENDED
2 CM (1 inch) FROM THE BOTTOM.
OTHERWISE, THE MEASUREMENT
PROVIDERS WILL BE
INACCURATE.
TROUBLESHOOTING AND SOLUTIONS FOR FAULTS
OCCURRING DURING OPERATION
Fault symptoms
The unit does not power on
The display keeps displaying 0.0
Reading of the measured values is not stable
The measured values show incorrect
readings
The display keeps displaying 9.9
Calibration value does not show on the
display (---)
The red warning light flashes
COMPLIANCE WITH EMC & ROHS DIRECTIVES
The ECTESTOC-3D-P DOSATRON SONDE 1R26-CTM-COS probe complies with the following
directives and provisions:
Requirements regarding protection set forth in Directive 2004/108/EC on "electromagnetic
compatibility".
Directive 2011/65/EU of the European Parliament regarding restrictions on the use of certain hazardous
substances in electrical and electronic equipment.
EU Declarations of Conformity are available upon request - please contact us.
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DOSATRON INTERNATIONAL S.A.S / 32

Causes and solutions

- No batteries in the compartment.
- Batteries installed the wrong way round.
- Drained out batteries.
- The front panel pushbutton is broken.
- Probe suspended in the air.
- Probe wiring is cut.
- Poor fluid circulation.
- Check with a 1.413 mS conductivity
reference solution.
- Carry out the calibration process.
- Clean the 2 stainless steel electrodes with
fine grade emery cloth.
- Double-check the measurement with a
handheld meter.
- Short-circuit in probe wiring.
- Clean the 2 stainless steel electrodes with
fine grade emery cloth. They must be clean
and shiny.
- Probe wiring is cut.
- Short-circuit in probe wiring.
- The reference solution is too old or in bad
condition.
- The reference solution conductivity is not
1.413 mS.
- Replace the 2 1.5 V AA size batteries.