• START > PRODUKTE >> Feuchtigkeit in Gas
For highly corrosive gas / most of the gas trace moisture-stable continuous measurement

The electrolyte gas moisture measurement was first successfully tested by Kide in 1959 and used to follow moisture measurements. This method provides an industrial solution for the continuous measurement of trace water in non-alkaline gases for continuous online monitoring of industrial processes in real time.

Working principle
The electrodes are coated with parallel platinum wire or parallel platinum wire, and the platinum wire is coated with hydrated phosphorus pentoxide film. When the gas passes through the electrolytic cell, all the water is absorbed and generates phosphoric acid, the DC voltage between the wire for the electrolysis of phosphoric acid, the decomposition of oxygen, hydrogen and phosphorus pentoxide. When the absorption and electrolysis reach a balance, in the electrolysis of water are all phosphorus pentoxide film absorption and all electrolysis. After Faraday''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''Law of electrolysis and gas law, according to the electrolysis current directly measured the absolute value of the water samples.

Zirconia ceramic or PPEK or glass material three options, PEEK material can be resistant to hydrogen fluoride corrosion. Active locking connection for easy disassembly.

Corrosive gases: PVDF
Non-corrosive gases: PVDF or SS stainless steel
 Sample gas inlet pressure up to 4Bar (PVDF) / 10Bar (SS)
 stable sample gas flow 20Nl / h
Three-way valve and four-way valve operation, easy to maintain and regenerate the sensor
 Sampling device Compressed air micro overpressure protection
 Incorrect gas can increase the filter
 Liquid chlorine can increase the electric pressure reducing valve
 Vacuum inlet can be added to suction pump
For disposal in exhaust gas, a sample gas outlet is recommended

1. Chloralkali-PVC chemical: chlorine / chlorine / hydrogen chloride / sulfur dioxide in trace water analysis and measurement;
2. Fluorochemical Industry: Hydrogen fluoride in trace water analysis and measurement (a unique PEEK electrode technology, resistance to hydrogen fluoride corrosion!);
3. polysilicon / organic silicon: chlorine / hydrogen chloride / silicon tetrachloride trace water analysis and measurement;
4. Natural gas and petrochemicals: natural gas hydrogen, acetylene and other hydrocarbon gases in trace water analysis and measurement;
5. Gas: oxygen, nitrogen, carbon dioxide, argon or other noble gases
6. Freezer / Compressor: trace water analysis and measurement;
7. Power: SF6 trace water analysis and measurement;

SMART-MT20D, economical, cost-effective, KF40 vacuum flange connection, resistant to hydrogen fluoride corrosion.
Usually used in inert gas trace water analysis measurement:
 lithium battery
 Vacuum furnace manufacturer
 Vacuum glove box manufacturer
 Universities and research institutes (nuclear industry / new energy materials)
 Metal heat treatment / welding
 OLED / capacitor / HID lamps and electronics
 fine chemicals / pharmaceuticals

Technical parameters:
Sensor material glass / ceramic / PEEK, platinum
Flow cell material PVDF or stainless steel
Accuracy 0.4ppm or measured value 5%
Sensitivity 0.1ppm
The reaction time is less than 1 second
The operating time T50 is less than 8 seconds
Measurement of the gas flow 20Nl / h
Sensor Gas High Pressure 4bar (PVDF) / 10Bar (Stainless Steel)
Ambient temperature 5-50 ¡æ
Gas measuring tube diameter 6mm
Measuring cable 1.4 meters to 100 meters
Connection type 1 / 4NPT thread or KF40 vacuum flange connection
Explosion-proof Intrinsic Safety Ex ia


NanJing TRUST-CONTROL Technology Co.Ltd