horiba LAQUAact-PD110, Instruction Manual

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When an error message appears
87
●
ERR No.0005 Electrode sensitivity error (pH)
Detected that the electrode sensitivity is out of the setting range that allows proper
measurement.
●
ERR No.0005 Electrode sensitivity error (DO)
Detected that the electrode sensitivity is out of the setting range that allows normal
measurement.
Cause How to solve problem
The electrode is dirty Clean the electrode.
The electrode is cracked Replace the electrode.
Calibration was not performed
correctly.
Perform the calibration correctly.
The electrode is not connected
correctly
Connect the electrode correctly.
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.
There is a problem with the
standard solution.
Use new standard solution.
Cause How to solve problem
The electrode is dirty Clean the electrode.
The electrode is cracked Replace the electrode.
The stirring is inappropriate. Stir at an appropriate stirring speed (1000 to 1500 rpm).
The electrode is not connected
correctly
Connect the electrode correctly.
The settings are wrong.
Set the correct salinity correction, air pressure correction,
and temperature.
There is liquid on the DO tip
membrane. (when performing air
calibration) Let the electrode sit until the liquid evaporates or remove
the liquid using cotton gauze making sure not to scratch
the membrane.
There is something wrong with
the standard solution. (when
conducting standard solution
calibration)
Prepare new zero standard solutions.
Sufficiently bubble the span standard solution with a
diffuser or other tools.