The pH measurement is required in industry, agriculture, medicine, environmental protection and scientific research. Wholesale liquid pH sensor at Supmea manufacturer.
Liquid pH sensor, the English name pH electrode or pH sensor, is the part of the PH meter in contact with the measured substance, used to measure the electrode potential device.
There are usually two methods to measure pH in aqueous solutions, colorimetric method (pH paper and cuvette) and potentiometric method. Potentiometric method is the only method that enables continuous online measurement and process monitoring, and potentiometric method gives accurate and reproducible results for pH values. The core theory of pH electrode measurement is the Nernst equation.
The electrodes used in the potential analysis method are called primary cells. A primary cell is a system that serves to convert the energy of a chemical reaction into electrical energy. The voltage of this cell is called the electric potential (EMF). This electromotive force (EMF) consists of two half cells. One half-cell is called the measuring electrode and its potential is related to a specific ionic activity. The other half-cell is the reference half-cell, usually called the reference electrode, which is generally connected to the measuring solution and to the measuring instrument. The most familiar and commonly used PH indicator electrode is the glass electrode.
An industrial online pH measurement system usually consists of four parts: pH sensor, i.e. pH electrode, pH transmitter, electrode sheath and cable.
|Product||Liquid pH Sensor|
|Measurement Range||0-14 pH|
|Zero Potential Point||7 ± 0.5 pH|
|Membrane Resistance||general: <250ΜΩ|
|Practical Response Time||< 1 min|
|Temp Compensation||NTC 10 KΩ/Pt1000|
|Heat Resistance||0-130℃ for general cables|
|Pressure Resistance||2.5bar at 25 ℃|