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How to measure the PH value in high-purity water? Let's give a brief introduction to this issue below.
In pure water systems, the measurement of PH value is usually used as a tool for diagnosing whether there is contamination. For the entire system, the accuracy of PH measurement is of great significance.
If the purity of water is very high, it can be monitored by measuring conductivity or resistivity, and there is no need to measure PH again. Therefore, the measurement of PH value is usually used as a tool for diagnosing whether there is pollution, that is, whether there is acid or alkali pollution to it. It can be used to diagnose the source of pollution. In addition, for the final purification process, PH is also a very important control parameter.
The following factors can ensure the online measurement of PH in high-purity water:
The measurement point must be in the bypass system and the medium can be discharged. Because the operation of the reference system of the electrode requires a constant and low pressure, and the sample can be contaminated by the KCL solution in the electrode.
2. To prevent the measurement value from decreasing due to the contamination of the sample by carbon dioxide in the air, the sample must be sealed.
3. The flow-through sheath must have good shielding performance (such as stainless steel) to prevent electrical interference and the influence of electric potential.
4. Due to the extremely high impedance being measured and its susceptibility to interference, the cable connecting the sensor to the transmitter must have excellent shielding performance.
5. The flow rate of the sample must be low and stable, as an excessively high flow rate will cause electrostatic effects.
6. There must be reserved channels to separate KCL from the sample in the reference electrode to prevent the influence of KCL on the measurement.
7. The preamplifier of the transmitter must simultaneously provide high-impedance input for both the PH meter glass electrode and the PH meter reference electrode.
8. If the reference value is 25. For PH values below C, the Nernst equation needs to be used to temperature compensate the PH value to 25. Values below C.
Qiaoruo Environmental Protection Technology Co., Ltd. currently produces and operates products including motor-driven mechanical diaphragm metering pumps, motor-driven hydraulic diaphragm metering pumps, online PH meters, imported metering pumps, water purifiers, metering pumps, chemical pumps, mixers, water treatment analysis and control instruments, systems and accessories, etc. The invented portable high-pressure water purifier without power has a filtration accuracy of 0.00001 microns and is easy to use.
In pure water systems, the measurement of PH value is usually used as a tool for diagnosing whether there is contamination. For the entire system, the accuracy of PH measurement is of great significance.
If the purity of water is very high, it can be monitored by measuring conductivity or resistivity, and there is no need to measure PH again. Therefore, the measurement of PH value is usually used as a tool for diagnosing whether there is pollution, that is, whether there is acid or alkali pollution to it. It can be used to diagnose the source of pollution. In addition, for the final purification process, PH is also a very important control parameter.
The following factors can ensure the online measurement of PH in high-purity water:
The measurement point must be in the bypass system and the medium can be discharged. Because the operation of the reference system of the electrode requires a constant and low pressure, and the sample can be contaminated by the KCL solution in the electrode.
2. To prevent the measurement value from decreasing due to the contamination of the sample by carbon dioxide in the air, the sample must be sealed.
3. The flow-through sheath must have good shielding performance (such as stainless steel) to prevent electrical interference and the influence of electric potential.
4. Due to the extremely high impedance being measured and its susceptibility to interference, the cable connecting the sensor to the transmitter must have excellent shielding performance.
5. The flow rate of the sample must be low and stable, as an excessively high flow rate will cause electrostatic effects.
6. There must be reserved channels to separate KCL from the sample in the reference electrode to prevent the influence of KCL on the measurement.
7. The preamplifier of the transmitter must simultaneously provide high-impedance input for both the PH meter glass electrode and the PH meter reference electrode.
8. If the reference value is 25. For PH values below C, the Nernst equation needs to be used to temperature compensate the PH value to 25. Values below C.
Qiaoruo Environmental Protection Technology Co., Ltd. currently produces and operates products including motor-driven mechanical diaphragm metering pumps, motor-driven hydraulic diaphragm metering pumps, online PH meters, imported metering pumps, water purifiers, metering pumps, chemical pumps, mixers, water treatment analysis and control instruments, systems and accessories, etc. The invented portable high-pressure water purifier without power has a filtration accuracy of 0.00001 microns and is easy to use.