1. The leads of the electrode should not be damp, otherwise the measurement will be inaccurate.

2. After high-purity water is poured into a container, it should be measured quickly, otherwise the conductivity will increase rapidly because CO2 in the air dissolves into the water and becomes carbonate ions.

3. The container containing the tested solution must be clean and free from ion contamination.

1. Before turning on the power switch, observe whether the pointer points to zero. If zero is not known, adjust the screw on the meter head to make the pointer point to zero.

2. Turn the calibration and measurement switches to the "calibration" position.

3. Plug in the power cord, turn on the power switch, and preheat for a few minutes (until the pointer * stabilizes). Adjust the "correction" device to make the meter indicate full load.

When using ranges (1) to (8) to measure liquids with conductivity below 300, select "low cycle" and turn the plate towards "low cycle". When using ranges (9) to (12) to measure liquids with conductivity in the range of 300 to, turn the plate towards "high cycle".

5. Turn the range selection switch to the desired measurement range. If the conductivity of the measured solution is unknown in advance, it should be set to the high conductivity measurement mode first, and then gradually lowered to prevent the gauge needle from bending.

6. Measurement reading: generally, the knob for measuring its "constant" is turned to the 1.0 gear, and the measurement top note (ADI) is turned to the maximum value, and then slowly adjusted. Turn the measurement switch to the calibration gear to adjust the zero point, select the range, and then turn the measurement switch to the measurement position before reading.

7. Use of electrodes: During use, clamp the rubber cap of the electrode with an electrode clamp and fix the electrode on the electrode rod through the electrode clamp.