QXCG103 methane sensor adopts self-developed laser and photodetector core devices, combined with stable temperature control algorithm, concentration inversion algorithm and temperature compensation algorithm to achieve accurate measurement of methane concentration; the product is based on Tunable Diode Laser Absorption Spectroscopy
(TD-LAS), internal design of the multiple reflectance optical path structure, absorption of the light range is long, and the detection sensitivity is high;Standard threaded mounting interface and stainless steel structure design to meet the requirements of explosion-proof, convenient for customers to quickly product integration, can be widely used in underground space, catering industry, industrial chemical industry and coal mining and other fields.
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Product Features |
 Strong anti-interference. Methane "fingerprint spectrum" absorption detection technology, resistant to interference such as water vapor and poisoning.
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 Strong structural protection. Stainless steel material design, meeting intrinsic safety level explosion-proof requirements.
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 High detection accuracy. Combining wavelength modulation technology directly with folded optical path design, the resolution can reach 0.01% VOL.
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 Low cost of use. Factory calibration free, with a service life of over 10 years.
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 Good environmental adaptation: Wide temperature compensation correction algorithm, capable of meeting -40 ℃ -70 ℃.
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Product Performance Technical Indicators |
| Category | Parameters | Technical Specification | ||
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Measurement Parameters |
Measuring Gas | Methane | ||
| Detection Principle |
TD-LAS |
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Detection Method |
Diffusion | |||
| Measuring Range |
0-20%VOL 0-100%VOL |
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Measurement Error |
<±0.06%VOL,0-1%VOL <±6%(True Value) ,1-20%VOL |
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<±0.06%VOL,0-1%VOL <6%(True Value) ,1-100%VOL |
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| Lower Detection Limit | 0.15%VOL | |||
| Minimum Resolution | 0.01%VOL | |||
| Response Time | T₉₀<25s | |||
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Operating Parameters |
Working Voltage |
3.0 VDC ~3.6VDC |
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| Average Working Current |
<35mA |
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Peak Current |
<160mA |
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Output Mode |
Standard TTL Serial Port |
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Working Temperature |
-40℃~+70℃ |
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Working Humidity |
0~99%RH（Non-Condensing） |
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| Explosion Proof Signs | Ex ia IIC T6 Ga | |||
| Protection Class | IP66 | |||
| Weight&Dimension | Weight |
255g |
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| Size | 41.7mm×63.6mm | |||
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Product Application Scenarios |
This product is mainly used for methane gas monitoring devices. As the core component of methane gas monitoring devices, it is used for methane gas leak detection and alarm. It can be widely used for methane gas leak detection and alarm in underground spaces, catering industry, industrial chemical industry, coal mines and other fields.
