Four-Claw Sheath PH Sensor With 0-100℃ Temperature Resistance For Clean Water

Four-Claw Sheath PH Sensor With 0-100℃ Temperature Resistance For Clean Water

The pH value of water depends on the amount of dissolved substances, so pH value can sensitively indicate changes in water quality. The change of pH value has a great impact on the reproduction and survival of organisms, and also seriously affects the biochemical effect of activated sludge, that is, affects the treatment effect. The pH value of sewage is generally controlled between 6.5 and 7. Water is chemically neutral, and some water molecules spontaneously decompose according to the following formula: H2O=H++OH-, that is, decomposed into hydrogen ions and hydroxide ions.

In a neutral solution, the concentrations of hydrogen ions H+ and hydroxide ions OH- are both 10-7 mol/l, and the pH value is the negative number of the base 10 logarithm of the hydrogen ion concentration: pH=-log, so neutral The pH of the solution is equal to 7. If there is an excess of hydrogen ions, the pH value is less than 7 and the solution is acidic;

Conversely, if the hydroxide ions are excessive, the solution is alkaline. The pH value is usually measured by the potentiometric method. A galvanic cell is usually composed of a constant potential reference electrode and a measuring electrode. The electromotive force of the galvanic cell depends on the concentration of hydrogen ions and the pH of the solution. The factory uses a special glass probe that is sensitive to pH on the measuring electrode. It is made of special glass that can conduct electricity and penetrate hydrogen ions. It has the characteristics of high measurement accuracy and good anti-interference. When the glass probe comes into contact with hydrogen ions, a potential is created. Potentials were measured against a reference electrode with a silver wire suspended in a silver chloride solution. The pH value is different, and the corresponding potential is also different, which is converted into a standard 4-20mA output through the transmitter.

Specification:

Please click the catalog of pH controller here:

Daruifuno Catalog.pdf

Brief introduction:

• Glass shell pH composite electrode;

• Blue low impedance hemispherical glass head, high strength, not easy to break;

• The reference is ceramic hole shape core, it has the characteristics of smooth response, no potential drift and good stability;

• The reference system is Ag/AgCl, double salt bridgefilled with KCl colorless high temperature gel;

• The reference electrolyte is saturated KCL+ excess KCL crystal, the service life is long;

• The ASP101 pH electrode can not only be used for drinking water but also in wastewater, sewage and other industria applications.

Aplication: Pure water monitoring

Drinking water,surface water,water quality analyze,ground water,ect.

Industrial process monitoring and dosing control

Chemical,petroleum,paper,food and medicine,PCB manufacturing,etc.

FAQ

1. What is themeasurement principle of this pH electrode?
A: The pH value potentiometric method uses the potential difference of glass electrodes for pH measurement.

2. How is this glass pH electrode composed?
A: The pH electrode is usually composed of an indicator electrode and a reference electrode.

3. How to judge the pH of the solution?
A: If the internal hydrogen ion concentration of the pH glass bulb is lower than the outside, the measured solution is recorded as acidic and the pH value is lower than 7; if the two are the same, the solution is neutral and the pH value is equal to 7; if the internal hydrogen ion concentration is higher than externally, the measured solution is alkaline and the pH value is higher than 7

4. What is the wire length of the pH electrode?
A: The lead wire of this electrode is 3m by default, other lengths need to be customized, contact our customer service, the price will vary with the change of length.