Horiba Scientific LAQUAact D-75G, Инструкция по эксплуатации

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Troubleshooting
80
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The measured value blinks
The measured value blinks when it is out of the measurement range.
• How to check for instrument defect
Short the metal part of the outer tube to the center pin of the electrode
connector of the corresponding channel of the instrument. If the
measured value does not blink, the instrument is normal. If the
measured value blinks, consult your dealer.
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The temperature display blinks or is fixed at 25°C
The measured value blinks when it is out of the measurement range.
Cause How to solve problem
Sample is out of the
measurement range.
Use a sample within the measurement range.
Electrode is not immersed
enough to cover liquid junction.
The electrode must be immersed up to the liquid junction.
As a guide, immerse to at least 3 cm from the tip of the
electrode.
The electrode cable is broken. Replace the electrode.
Calibration is not performed or
performed incorrectly.
Perform the calibration correctly.
Instrument defect Check as explained below.
Cause How to solve problem
Sample temperature is out of the
measurement range.
Set to a temperature within the measurement range.
Temperature connector is not
connected correctly.
Connect the temperature connector correctly.
The temperature setting is set to
MTC.
Change the setting to ATC.
Operation is incorrect during
temperature calibration.
Recalibrate using a solution of known temperature, or
return to the factory setting (“ Resetting to factory default
settings ” (page 65)).
Instrument defect Consult your dealer.