VQ21TB Combustible Gas Sensor Catalytic Combustion Bridge Type Double Beads
VQ21TB Combustible Gas Sensor Catalytic Combustion Bridge Type Double Beads
Key Features
1. Poisoning Resistance: Resistant to pollutants such as silicon, sulfur, and chlorine, suitable for harsh industrial environments.
2. Dual-bead Design: Self-compensating, minimal temperature and humidity drift, high stability.
3. Broad-spectrum Detection: Uniform response to most combustible gases, suitable for general applications.
4.Low Voltage: 2V power supply, suitable for fixed-point online monitoring (not low-power portable).
Typical Applications:
Industrial combustible gas detectors (fixed point);
Urban gas pipeline/gas station leak monitoring;
Petrochemical plants, wastewater treatment plants;
Commercial kitchens, cold storage facilities (R32/R290 refrigerant leaks);
Ambient air quality monitoring equipment.
Specification:
| Sensitivity | ≥15mV/%CH₄ |
| Linearity | Good linearity within 0–3% CH₄ |
| Response Time | t50≈2s (Fast response) |
| Operating Temperature | -40°C ～ +70°C |
| Lifetime | >5 years (Long-term stability) |
| Package | PCB through-hole hard lead (0.5mm) |
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