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"

Low power consumption hydrogen sensor VDM-1

   The sensitive element of the device is MIS-capacitor which capacitance is related on the ambient hydrogen concentration. Absolutely selective sensor for hydrogen. The capacitance is working in RC-generator. As the result the output frequency is proportional to hydrogen concentration.

Low power consumption hydrogen sensor
Parameters Parameter values
Hydrogen concentration measurement range, vol. % 0.1-1
Response time, τ0.9, min, not greater than 10
Recovering time, τ0.1, min, not greater than 10
Output signal, frequency (amplitude) 10-25 kHz (4.5 V)
Realtive measurement error, % ±3 %
Power consumption, mW 2
Supply voltage, V =5
Dimensions, mm 43×30×14
Weight, kg 0.1
Lifetime of the sensitive element, years 5

   Applications: automatic explosion protection systems, technological processes control.

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