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 2003 
 Publications 2004 
 Publications 2005 
 Publications 2006 
 Publications 2007 
 Publications 2008 
 Publications 2009 
 Publications 2010 
 Publications 2011 
 Publications 2012 
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. This 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
Device selectivity selective about H2

   Applications: automatic explosion protection systems, technological processes control.

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