0.1 ppm Range Start
Official detection range begins at 0.1 ppm H2 and extends to 1000 ppm.
GMV-2021B MEMS MOS Hydrogen Gas Sensor
The Winsen GMV-2021B is an all-solid-state MEMS-MOS hydrogen sensor for 0.1–1000 ppm H2 detection. Its ceramic package, ≤50 mW heater consumption and compact MEMS architecture support low-power hydrogen leakage monitoring in vehicles and energy-storage systems.
BrandWinsen
Sensing PrincipleMEMS MOS
Target GasH2
Product TypeMEMS MOS Hydrogen Sensor
Hydrogen Sensing for OEM Integration
Product Overview
A compact low-power MEMS-MOS H2 sensor for hydrogen leakage monitoring in vehicles, battery packs and energy-storage equipment.
GMV-2021B uses an all-solid-state MOS sensing principle based on an advanced MEMS architecture.
Hydrogen changes the conductivity of the metal-oxide sensing layer, providing a concentration-dependent resistance signal for external measurement circuitry.
Designed for Reliable Integration
Key Features
MEMS-MOS Architecture
All-solid-state MEMS construction supports compact sensor integration.
≤50 mW Heater Power
Low heater consumption is suited to energy-conscious embedded systems.
Lightweight Ceramic Package
Standard ceramic encapsulation supports compact electronics.
Long-Life Solid-State Design
No liquid electrolyte is required in the MOS sensing structure.
Anti-Interference Capability
Official product information highlights excellent anti-interference performance.
Typical Use Cases
Applications
Hydrogen Fuel-Cell Automobiles
Electric Vehicles
Lithium Battery Packs
Energy Storage Power Stations
Official Product Parameters
Technical Specifications
| Parameter | Specification |
|---|---|
| Part No. | GMV-2021B |
| Sensor Type | MEMS-MOS |
| Standard Encapsulation | Ceramic |
| Target Gas | H2 |
| Detection Range | 0.1～1000ppm(H2) |
| Loop Voltage (VC) | ≤24V DC |
| Heater Voltage (VH) | 2.5V±0.1V AC or DC |
| Load Resistance (RL) | Adjustable |
| Heater Resistance (RH) | 80Ω±5Ω（Room temperature） |
| Heater Consumption (PH) | ≤50mW |
| Sensitive Materials Resistance (RS) | 1KΩ～30KΩ(in 200ppmH2) |
| Sensitivity (S) | R0(in air)/Rs(in 200ppmH2)≥5 |
| Concentration Slope (α) | ≤0.6(R500ppm/R200ppmH2) |
Specifications are based on the official Winsen product page or product manual. Confirm the latest datasheet, calibration requirements, communication protocol and mechanical drawing before final product design.
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