QXCG100 reflective methane sensor is developed based on Tunable Diode Laser Absorption Spectroscopy (TD-LAS) technology, adopting 1653.7nm laser for characteristic “fingerprint spectrum” absorption detection of methane gas, and resistant to interference by water vapor or other gases. The sensor adopts “U” type reflective optical path design, compact structure, small volume, long absorption range; the selection of low-temperature performance of the laser and photodetector devices and the use of wide-temperature temperature compensation correction algorithms, environmental applicability; the standard voltage power supply and the standard communication protocols and interfaces design, versatility; intrinsically safe explosion-proof design. The product is used for gas leakage detection and alarm in harsh environments.
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Product Features |
 Laser methane signature “fingerprint” absorption detection. Great versatility.
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 “U” reflective laser optical path combined with wavelength-modulated harmonic demodulation design. High detection sensitivity.
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 Non-destructive absorption detection. Resistant to poisoning, long life.
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 Wide temperature compensation correction algorithm, high and low temperature. Highly adaptable to the environment.
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 Laser detection, good stability. Calibration free.
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 standardized protocols and interface design. Great versatility.
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 Intrinsically safe explosion-proof design.
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Product Performance Technical Indicators |
| Parameter | Technical Specification | |
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Model | QXCG104-R-100-3-10 |
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Technical Parameters |
Measuring Gas | Methane |
| Detection Method | Laser-Based | |
| Measuring Range |
0~5%VOL |
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| Measurement Error |
±0.1%VOL,0-1%VOL ±10%(True Value),1-5%VOL |
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| Lower Detection Limit |
0.03%VOL |
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Operating Parameters |
Working Voltage |
5VDC |
| Operating Power Consumption |
<250mW① |
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| Output Methods |
Standard TTL Serial Por |
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| Working Temperature |
-30℃~60℃ |
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| Working Humidity |
0~95%RH(Non-Condensing) |
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Product Application Scenarios |
This product is mainly used for underground space combustible gas monitor, as the core component of combustible gas monitor, gas leakage detection and alarm, can be widely used in gas wells, power wells, drainage wells and sewage wells and other places of combustible gas monitor.
