Introduction

A gas alarm is an explosion-proof safety device capable of performing rapid, reliable, and stable continuous monitoring of gas concentrations in industrial production. When the detected gas concentration reaches the preset alarm threshold, the alarm activates and drives external devices to alert on-site personnel to take necessary protective measures, thereby preventing combustion accidents caused by gas leaks.

Working Principle of Gas Alarm: The alarm is powered and installed on-site. When a gas leak occurs, the sensor converts the detected leakage amount into a corresponding voltage signal output. This voltage signal is processed by the alarm, uploaded as data, and displayed on the screen. When the concentration reaches the set action value, the alarm activates and drives external devices.

A gas alarm is a fixed instrument that continuously monitors the concentration of oxygen or toxic, harmful, flammable, and explosive gases in the working environment.

The gas alarm uses a diffusion method to convert the gas concentration signal at the monitoring point into an electrical signal in real time. This signal is amplified and then processed by the CPU through AD sampling, temperature compensation, and intelligent calculation. If the measured value exceeds the set alarm concentration, an alarm signal is triggered.

The gas alarm features a dual-chamber design, specialized imported sensors, and modular sensor construction for easier calibration and adjustment. It offers superior performance, high stability, multiple signal outputs, and convenient installation and maintenance, meeting the high reliability requirements of industrial sites.

Features

Ingenious structural design for extremely simple installation;

Flexible setting of upper and lower alarm points across the full range;

Explosion-proof design suitable for Zone 1 and Zone 2 hazardous areas in industrial settings;

Optional LCD concentration display for real-time on-site monitoring;

Optional dedicated explosion-proof audible and visual alarm for on-site alerts;

Customizable range from 1 to 99999 to meet all gas detection needs;

Two sets of normally open passive contact outputs for controlling fans or AC contactors of solenoid valves;

Sophisticated power supply design with pure SMT component assembly ensuring stable product performance;

Imported gas-sensitive sensors provide high accuracy, long lifespan, minimal zero drift, fast response time, continuous long-term operation, compact size, ease of use, and strong anti-poisoning performance;

Alarm point adjustment, zero adjustment, and target point calibration can be performed via the controller without opening the cover;

Compatible with dozens of gases and displays gas names; units include ppm, LEL%, VOL%, and mg/m3;

Standard (4–20)mA signal for direct connection to factory DCS systems; RS485 digital signal for connection to factory host computers.