Online Hydrogen Purity    Analyzer

Online Hydrogen Purity Analyzer

The online hydrogen purity analyzer uses sensors based on a reliable and stable thermal conductivity concept that provides high sensitivity and accurate analysis of two-phase gases. It is designed in such a way as to monitor hydrogen purity in the generator and gas purity in the generator during the gas replacement process.

With a rich external control port, users can freely choose and easily set the form of a plug-in transmitter or access port. On-site inspections and alarms are available. The system has integrated sound and light alarms and provides a relay that is normally open to the control terminal.

About Tri-Gas Analyzer 

The Tri-Gas Analyzer Are Designed Specifically For Monitoring H2 Purity In The H2 Feed To A Power Generator And To Monitor The Purging Procedure During Shut Down. The Analyzer Can Measure The Following Gases By Switch Selection: Range 1: 0-100.0% H2 In Air; Range 2 : 0-100.0% H2 In CO2; Range 3 : 0-100.0% Air In CO2. A 4-20 MA Output Is Provided For The Range Of 85-100% H2 In Air, Along With Two Gas Alarms And A Sensor Fail Alarm.

Tri-Gas Analyzer Applications:

For Continuous Analysis Of Hydrogen Purity And For Purge Monitoring Of Hydrogen-Cooled Generators And Synchronous Converters.



  • Easy to setup
  • The interface is simple and easy to operate
  • Adjustable high and low alarm value without any hassle
  • Free maintenance with no consumables
  • Power consumption is low
  • Self-adjustment function
  • Explosive proof housing
  • Password management to prevent incorrect operation
  • More than 1% improved refinery hydrogen management system


Model No VOH2P-500
Sensor Technology Thermal Conductivity (TCD)
Monitoring Parameters Range 1: 0-100.0% H2 In Air; Range 2 : 0-100.0% H2 In CO2; Range 3 : 0-100.0% Air In CO2
Resolution 0.1%
Accuracy +/- 0.2% of Full Scale
Response Time Less Than 10
Display Digital Graphical Display
Operating Power 100-240 VAC, 50-60HZ Standard
Analog Output 4-20ma, 0-2v
Digital Output RS 485
Ex-proof Yes available CCOE , CMRI certified


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