horiba LAQUAact ES-71G, Инструкция по эксплуатации

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Troubleshooting
52
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The indicated value does not change/No response
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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
①
pH, mV, ION, resistivity (ES-71G is only resistivity)

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.
②
Conductivity, salinity, TDS

Disconnect the electrode from the instrument. If the measured value
shows about "zero", the instrument is normal. If it is not normal, consult your dealer.
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Repeatability of the measured value is poor
Cause How to solve problem
The conductivity cell is broken. Replace the conductivity cell.
The conductivity cell is not
connected correctly.
Connect the conductivity cell correctly.
Keys are locked.
Turn off the power, remove the batteries, and then turn
on the power again.
The instrument is in HOLD state. Cancel the HOLD state.
Instrument defect
Consult your dealer.
Cause How to solve problem
Sample is out of the
measurement range.
Use a sample within the measurement range.
The conductivity cell cable is
broken.
Replace the conductivity cell.
Cell constant is not set. Set the cell constant.
Calibration is not performed or
performed incorrectly.
Perform the calibration correctly.
Instrument defect Check as explained below.
Cause How to solve problem
Effect of the sample solution
Repeatability becomes poor when the pH of the sample
changes over time.
The conductivity cell is dirty. Clean the conductivity cell.
The conductivity cell is broken. Replace the conductivity cell.