Laser Methane Gas Sensor

Cat No: LGS-LJX-0001 Datasheet

Product Name: Laser Methane Gas Sensor

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Basic Information

Detailed Description	The laser methane gas sensor (hereinafter referred to as the sensor) is a home-use methane sensor that detects methane gas based on tunable laser gas absorption (TDLAS) technology. It employs a through-beam optical path structure, featuring excellent gas selectivity, oxygen independence, resistance to moisture and poisoning, and long lifespan. It incorporates temperature control and compensation algorithms for accurate methane gas measurement and has a serial port output interface for ease of use. This sensor is a high-performance device that tightly integrates mature laser gas absorption detection technology with stable optical path and circuit design.
Main Applications	Home gas leak detection
Detecting Gas	Methane (CH4)
Power Supply Voltage	DC (3.2-3.6) V
Operating Current	<300 mA
Interface Level	3.0 V
Output Signal	Serial port (UART) (TTL level 3.0 V)
Preheating Time	15 s
Response Time	T90 < 15 s
Operating Temperature	-13℃～58℃
Operating Humidity	0–95% RH (non-condensing)
Working Pressure	80 kPa～116 kPa
Storage Temperature	-20℃～70℃
Specifications And Dimensions	76.5 mm x 21 mm x 14.1 mm
Weight	<20 g
Life	>10 years
Range	3-50.00% LEL 3-100.00% LEL
Resolution	0.1% LEL
Accuracy	5-20.00% LEL ±(2% LEL)@25℃ 20-50.00% LEL ±(3% LEL)@25℃ 50-100.00% LEL ±(5% LEL)@25℃ 5-20.00% LEL ±(2% LEL)@25℃ 20-75.00% LEL ±(3% LEL)@25℃ 75-100.00% LEL ±(5% LEL)@25℃
Measurement Instructions	To ensure the overall measurement accuracy, it is recommended to avoid placing heat-generating devices around the sensor and ensure good ventilation around the sensor to reduce heat accumulation.

Features

It only detects methane gas and has strong resistance to gas interference.
It is resistant to moisture, non-toxic, requires no calibration, and has a long service life.
It boasts high detection accuracy, with a resolution of up to 0.1% LEL, and provides a serial port (UART) output method.

Note

Note	Detection ranges and measurement units (% LEL, % VOL, or ppm) vary by sensor type and target gas.

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For industrial/research use only. Not for personal/medical use.