The gas alarm control system is explosion-proof instrument, which consists of two parts: detector and alarm controller. The detector (primary meter) is installed in a dangerous place where there may be gas leakage, of which the core element is a gas sensor. The alarm controller (secondary meter) is installed in the duty room in a safe place.

When there is combustible or toxic gas volatilizing in the air, the detector detection signal is immediately transmitted to the alarm controller through the cable. When the set alarm concentration value is exceeded, the alarm controller immediately sends out the audible and visual alarm signal and outputs the linkage control signal to control the fan and other equipment to eliminate the danger, so as to achieve the safe production of the factory and avoid accidents.

Product features

1. Large LCD display, with text menu, easy to operate;

2 Setting low-limit and high-limit alarm, the alarm set value can be adjusted;

3 Built-in large-capacity storage can record 1000 records;

4. Automatic output linkage. The relay is passive normally open (contact capacity is AC250V/3A).

Electrical properties

Working power supply: AC220V/50HZ

Rated power: 1.2W/circuit

Alarm mode: audible and visual alarm

Alarm output: two sets of passive normally open contacts

Operation mode: key

Upload method: RS-485 (MODBUS-RTU)

Communication mode: 4-20mA

Status indicator: green power light, red alarm light, yellow fault light

Mechanical properties

Main material: carbon steel (1.2mm thick)

Installation method: wall-mounted

Weight: 2-way chassis, about 2.6KG, Three-way chassis, about 3.6KG

Overall dimension: two-way case 150 * 380 * 100 (mm)

Three-way chassis 210 * 380 * 100 (mm)

Use environment

Working temperature: - 20°C~+50°C

Relative humidity: 10%~95% RH (non condensing)

Qualification standard

Fire protection certification: CNAS ZRC23P620011R0S

Executive standard:

GB3836.1-2000 General Requirements for Electrical Equipment for Explosive Gas Environment

GB3836.4-2000 Electrical apparatus for explosive gas atmospheres, Intrinsic safety“i” 

GB16808-2008 Combustible gas alarm control units