Introduction

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

Working Principle: The alarm, installed on-site and powered on, operates by converting detected gas leakage levels into corresponding voltage signals via sensors. These voltage signals are 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 designed for continuous monitoring of oxygen concentration or toxic, harmful, flammable, and explosive gases in the working environment.

The gas alarm employs a diffusion method to convert gas concentration signals at monitoring points into electrical signals in real-time. These signals are amplified and 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 issued.

Featuring a dual-chamber design and specialized imported sensors with modular construction, the gas alarm offers convenient calibration, superior performance, high stability, multiple signal outputs, and easy 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;

Precision 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 calibration, and target point calibration can be performed via the controller without opening the cover;

Compatible with dozens of gas detections, displaying gas names and units such as ppm, LEL%, VOL%, and mg/m3;

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