Teach you how to use the conductivity meter correctly

First, before turning on the power switch, observe whether the instrument needle is pointing to zero, or adjust the function screw on the meter head so that the instrument needle points in the direction of zero.

The second is to put the correction measurement switch in the “correction” position. This can be done.

The third is to plug in the power cord and turn on the power switch, and warm it up for a few minutes (wait until the pointer is fully stabilized) to adjust the "adjust" regulator so that the meter indicates fullness.

Fourth, when using one to eight ranges to measure liquids with conductivity less than 300 μS•cm −1 , use “low weeks”. Then turn the high/low switch to low. When using the (9)-(10) range to measure a liquid with a conductivity in the range of 300 μS•cm-1 to 105 μS•cm-1, it will be pulled to the “high week”.

The fifth is to turn the range selection switch to the required measurement range. If you do not know the conductivity of the measured solution in advance, you should first pull it to the maximum conductivity measurement file, and then gradually decrease it to prevent the hands from bending.

Use of six electrodes: When using, use the electrode clamp to clamp the bakelite cap of the electrode and fix the electrode clamp on the electrode rod.

(1) When the conductivity of the test solution is less than 0.3μS•cm-1, use the DJS-0.1 type electrode. At this time, the “electrode constant compensation adjuster” should be adjusted to 10 times the matching electrode constant: for example: If the matching electrode constant is 0.090, it should be adjusted to the 0.90 position.

(2) When the conductivity of the tested solution is lower than 10μS•cm-1, use the DJS-0.1 electrode. At this time, the “electrode constant compensation adjuster” should be adjusted to the position of the matched electrode constant: for example, supporting The electrode constant is 0.95, then it should be adjusted to the 0.95 position, and if the matching electrode constant is 1.1, it should be adjusted to the 1.1 position.

Seventh, insert the electrode plug into the electrode socket, tighten the fastening screw on the socket, and then dip the electrode into the solution to be tested.

Eight is followed by correction [When using one-to-eight range measurement, turn low during correction, and when using nine-to-twelve range measurement, adjust to pull high cycle, pull "Calibration", adjust the adjustment regulator, and make the indication At full scale.

When measuring high-purity water with (0-0.1) or (0-0.3) μS•cm-1, first insert the electrode lead into the electrode jack, and adjust the capacitance compensation regulator to make the meter before the electrode enters the solution. The indication is the minimum value (the minimum value is the leakage resistance between the electrode platinum sheets, and the related work of this leakage resistance exists, so that the meter pointer cannot reach O point when adjusting the capacitance compensation regulator). Finally, you can start working normally.