ShenzhenYijiajie Electronic Co., Ltd.
| Detection Principle | Catalytic oxidation |
| Supply Ability | 1000PCS/Month |
| Packaging Details | Standard Box |
| Measuring Range | 0–100% LEL |
| Power Supply | 2.0V ±0.1V DC |
| Delivery Time | 3-5Workingdays |
| Detection Gases | Methane, propane, hydrogen, alcohol |
| Payment Terms | L/C, D/A, D/P, T/T, |
| Brand Name | SGX |
| Model Number | VQ21TB |
| Place of Origin | UK |
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Product Specification
| Detection Principle | Catalytic oxidation | Supply Ability | 1000PCS/Month |
| Packaging Details | Standard Box | Measuring Range | 0–100% LEL |
| Power Supply | 2.0V ±0.1V DC | Delivery Time | 3-5Workingdays |
| Detection Gases | Methane, propane, hydrogen, alcohol | Payment Terms | L/C, D/A, D/P, T/T, |
| Brand Name | SGX | Model Number | VQ21TB |
| Place of Origin | UK | ||
| High Light | combustible gas sensor catalytic combustion ，gas sensor double beads ，bridge type gas sensor | ||
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) |
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2006
Total Annual:
900000-1000000
Employee Number:
50~80
Ecer Certification：
Verified Supplier
Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, ph... Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, ph...
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