Extech Instruments EC600 User Manual page 15

Conductivity Measurement, Calibration, and Maintenance Considerations
•
The meter and probe are calibrated before leaving the factory; the user can take
measurements immediately upon receiving the unit
•
The recommend calibration period is once per month under normal circumstances; It is
necessary to calibrate a newly purchased conductivity electrode or one that has been
in service for a long period of time
•
Keep the conductivity electrode clean. It's best to rinse electrodes with distilled water
and air dry
•
The surface of the supplied conductivity electrode is plated with a layer of metal
platinum (black) in order to lower the electrode polarization and increase the measuring
range. Do not polish the black platinum surface; clean it by stirring in Distilled water. If
excessive organic buildup appears on the black platinum coating clean with hot water
and detergent or with alcohol
•
Replace the electrode if the above cleaning methods are ineffective
•
Reset the meter to its factory default settings (Parameter P9) if unusual operation is
noticed. If the restore process does not solve the issue, return the unit for an evaluation
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EC600 V2.0 4/10
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