The use of conductivity electrodes

　　Conductivity electrodeApplicable fields: It can be widely used for continuous monitoring of conductivity values in solutions such as thermal power, chemical fertilizers, metallurgy, environmental protection, pharmaceuticals, biochemistry, food, and tap water.

　　conductivity meterThe use of

1. Adjust the conductivity meter: Before turning on the power, observe whether the needle points to zero. If it does not point to zero, adjust the screw on the meter head to zero.

2. Turn the "Calibration, Measurement" switch to "Calibration".

3. Connect the power supply and preheat for more than 10 minutes (until the pointer * stabilizes). Turn the range switch to X 104 and then use the "Adjust" knob to adjust the pointer to 1.0 full degree

4. Measure the conductivity value of solvent water: Add 50ml of water to a 150ml conical flask and immerse it in the electrode.

5. Rotate the "constant" knob to the corresponding value based on the conductivity constant on the electrode.

6. Turn the "Range" switch to × 102, set the conductivity meter to "Low Cycle", and then use the "Correct" knob to adjust the pointer to 1.0 full degree.

7. Read the conductivity value of solvent water.

8. After the measurement is completed, turn the "calibration, measurement" switch to "calibration".

　　Conductivity electrodePrecautions for use

1. The electrode plug socket should not be affected by moisture, and the instrument should be placed in a dry environment to avoid measurement errors or leakage caused by moisture or water droplet splashing.

To avoid drift in measurement values when measuring pure or ultrapure water, it is recommended to use a sealed groove for flow measurement in a sealed state. If a beaker is used for sampling and measurement, significant errors will occur and the measurement will be inaccurate.

3. As the temperature compensation system adopts a fixed 2% temperature coefficient compensation, it is recommended to measure high-purity water without compensation as much as possible. After measurement, check the table for the situation.

4. The electrode should undergo regular constant calibration.

5. To ensure measurement accuracy, the electrode should be rinsed twice with distilled water (or deionized water) less than 0.5 μ S/cm before use (the platinum black electrode should be soaked in distilled water for a while before use), and then rinsed three times with the test sample before measurement.

6. The measuring electrode is a precision component that cannot be changed in shape and size, cannot be decomposed, and cannot be cleaned with strong acid or alkali to avoid changing the electrode constant and affecting the accuracy of instrument measurement.

9. Other solutions are as above.