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
