0–100%LEL Range
Designed for flammable-range hydrogen concentration measurement.
CMV-2021D MEMS Catalytic Hydrogen Gas Sensor
The Winsen CMV-2021D is a MEMS catalytic hydrogen sensor for 0–100%LEL measurement. It provides a linear bridge output, ≤2 s response, ≤1 s recovery and low-power operation for hydrogen vehicles, energy storage and hydrogen handling systems.
BrandWinsen
Sensing PrincipleMEMS Catalytic
Target GasH2
Product TypeMEMS Catalytic Hydrogen Sensor
Hydrogen Sensing for OEM Integration
Product Overview
A fast MEMS catalytic H2 sensor with linear bridge output for flammable-range hydrogen detection.
CMV-2021D uses the catalytic combustion effect with a paired detection and compensation element forming part of a bridge circuit.
Bridge output voltage changes proportionally with hydrogen concentration, while the compensation element provides reference and temperature/humidity compensation.
Designed for Reliable Integration
Key Features
Linear Bridge Output
Bridge voltage changes proportionally with hydrogen concentration.
≤2 s Response
Fast T90 response supports hydrogen leak warning.
≤1 s Recovery
Official specifications list rapid recovery after gas exposure.
Low Power Consumption
Operates at 3.0±0.1 V and 14±1.0 mA.
Wide Temperature Range
Specified for -40℃ to +85℃ operating environments.
Typical Use Cases
Applications
Hydrogen-Powered Vehicles
Hydrogen Preparation
Energy Storage Systems
Hydrogen Transport and Use
Official Product Parameters
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | CMV-2021D |
| Sensor Type | MEMS Catalytic |
| Standard Encapsulation | Plastic Encapsulation |
| Working Voltage (V) | 3.0±0.1 |
| Working Current (mA) | 14±1.0 |
| Sensitivity (mV), 1% H2 | 30～60 |
| Linearity | ≤5% |
| Measuring Range (%LEL) | 0～100 |
| Startup Time in Air | ≤0.5s |
| Response Time (90%) | ≤2s |
| Recovery Time (90%) | ≤1s |
| Working Environment | -40～+85℃，less than 95%RH |
| Storage Environment | -40～+85℃，less than95%RH |
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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