Extech Instruments EC400 Manual

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EC400-en-GB_V2.6 11/14

8888

Measurement Procedure

Sample Preparation:

1. For Conductivity, TDS or Salinity place the test sample in a sample cup with

enough depth (2.5cm minimum) to cover the electrode. Stir the solution to

remove any air bubbles.

Measurement:

1. Press the ON button. ( and then “SELF CAL” will appear in the

display during the turn-on diagnostics)

2. Depress and hold the MODE/HOLD key to scroll to the desired

measurement mode.

3. Insert the electrode into the sample making sure that the electrodes

are completely submersed.

4. Slowly stir the solution with the electrode to remove air bubbles.

5. The meter will auto-range to the proper range and then display the

reading.