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Product Details

From the most remote corners of the Earth comes the fuel that makes modern life possible.

Methane CH4 Gas Alarm Detector

AN-LEL-D
Fixed methane (CH4) gas detector with catalytic combustion sensing, 0-100% LEL measuring range, audible and visual alarm, and optional 4-20 mA / RS485 output for industrial gas safety monitoring.
Gas
Methane (CH4)
Range
0-100 LEL
Output
4-20 mA / RS485 Optional
IP
IP65
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Product Overview

This methane (CH4) gas detector is designed for fixed gas monitoring in industrial environments where combustible gas leakage may occur. It uses catalytic combustion sensing and advanced microprocessor technology to provide stable detection, strong anti-interference performance, fast response, and reliable alarm output. The detector supports adjustable high and low alarm values, 4-20 mA or RS485 signal output, audible and visual alarm indication, and wall or pipe mounting.

Key Features

Advanced microprocessor technology for stable operation and strong anti-interference performance.
Catalytic combustion sensing for combustible gas detection in air.
Supports 4-20 mA analog output, optional RS485 communication, and relay alarm output.
Adjustable high and low alarm values with audible and visual alarm indication.

Technical Specifications

Gas Detection
Detected Gas
Methane (CH4)
Gas Type
Combustible
Measuring Range
0-100 LEL
Detection Principle
Catalytic combustion
Response Time
＜15S
Accuracy
＜±5%F.S
Signal Output & Power
Signal Output
4-20 mA / RS485 Optional
Power Supply
10VDC-30VDC
Alarm Output
Audible and visual alarm, 2 channel, 24V/2A
Communication
Maximum range: 2,000 meters (when used with the company's controllers)
Compatible Controller
Compatible with the company’s gas alarm controller
Display Method
Digital tube display
Alarm Setting
Adjustable high and low alarm values
Power Consumption
<2.5 W instantaneous peak
Installation & Environment
Installation Method
Can be installed on walls or pipelines.
Protection Rating
IP65
Explosion-proof Rating
Ex db IIC T6 Gb
Working Temperature
-20°C to +55°C
Working Humidity
≤90%RH
Thread Size
G1/2

Ordering & Support FAQ

How do I choose the right gas detector model?

Please provide the target gas, measuring range, output signal, installation environment, and whether a controller is required. We will recommend a suitable configuration.

Can this detector connect to a gas alarm controller?

Yes. It can be used with a compatible gas alarm controller for centralized monitoring, alarm output, and signal transmission.

What output signals are available?

The detector can support common industrial signal outputs such as 4-20 mA, RS485, or relay output depending on the product configuration.

Can the alarm value be adjusted?

Yes. High and low alarm values can be adjusted according to the monitoring requirements of the application.

Can I request documents before ordering?

Yes. Datasheets, user manuals, wiring diagrams, and available certification documents can be provided upon request.