Low power consumption hydrogen sensor
 Resistive sensor of explosive concentrations of hydrogen
 Hydrogen gas analyzers                             
 Hydrogen sulphide gas-analyzer                      
 Nitrogen dioxide gas-analyzer                    
 Ammonia gas analizer                              
 Sensor based explosives detector                      
 Portative hydrogen leak detector                      
 Portative hydrogen gas-analyzer VG-2                       
 Portative hydrogen gas-analyzer VG-5                      
 Publications'2020 until now 
National Research Nuclear University MEPhI

Solid state and nanosystems physics department
Laboratory "Development and making of sensors based on MIS-structures"

Gas analysers VG-3"A", VG-3"", VG-3""

We produce 3 modifications of VG-3 gas analyser:

  • VG-3"A" (oncentration range 10-6 - 10-3 vol. %)
  • VG-3"" (oncentration range 10-4 - 10-2 vol. %)
  • VG-3"" (oncentration range 10-2 - 1 vol. %)
VG series hydrogen gas analysers
Parameters Gas analyser model
Measurement range of hydrogen concentration, vol. % (ppm) 10-6 - 10-3
(0.01 - 10)
10-4 - 10-2
(1 - 100)
10-2 - 1
Resolution, vol. % 10-6 10-4 10-2
Response time, τ0.9, min, not greater than 10 3 0.1
Relaxation time, τ0.1, min, not greater than 10 3 0.1
Arbitrary measurement error, % ±10 ±5 ±3
Power voltage, V =12 or ~220, 50Hz
Dimensions, cm 20×12×5
Weight, kg 1
Sensor lifetime, years 5
Selectivity Selective to 2 (has no sensitivity to 2S, NO2, alcoholes, hydrocarbons, 2, )

   The device is equiped by memory for continuous measure storing and serial port RS-232 to access saved data. Every measure consists of measure value, exact date and time of measurement.
   VG-3"A" and VG-3"" applications are the following: geology (gases foundation), industry (detecting hydrogen solvated in liquids and metals), control of construction's containment (as leakage dectectors), microelectronics (technological processes control) and medicine.
   VG-3"" applications: anticombusting automatic systems (hydrogen and air mix monitoring), rocket engines checkout sequence, hydrogen fueled automobile engine control, control of powerful accumulators, and as leak detectors for inspecting of large volumes (upto 10 m3) and profilecomposite constructions (tube systems).

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