A4 Electrode Surface Treatment Procedure; A5 Calibration Procedure - Elcometer 138 User Manual

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A4: ELECTRODE SURFACE TREATMENT PROCEDURE
When using the sensor for the first time or again after several weeks of disuse, perform the electrode
surface treatment procedure as follows:
1 Put some drops of the conditioning solution into the measurement cell.
2 Leave for approximately 10 minutes.
3 Clean the measurement cell with running water.
4 Wash the measurement cell with standard solution.
5 Perform the calibration procedure, see Section A5 below.
A5: CALIBRATION PROCEDURE
1 Press the ON/OFF button to switch the meter on.
2 Press the CAL button until
3 Open the protection cover and place some drops of the 84µS/cm standard solution supplied into the
measurement cell avoiding the inclusion of bubbles. Washing the sensor with standard solution
beforehand may provide more accurate calibration.
Bubbles in the solution may cause the measurement to be inaccurate.
4
CAL
Button
en-19
appears on the display.
CAL
Protection
Cover
Appropriate
Cell
Electrode
Too Little
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