Combustible Gas Alarm Controller(JH-Z128)
The JH-Z128 combustible gas alarm controller is designed for environments involving the production, transportation, storage, and filling of combustible gases. It monitors airborne combustible gas concentration using point-type combustible gas detectors with RS485 digital signals, and when the set alarm threshold is reached it outputs alarm and control signals to alert on-site personnel. The controller can connect to systems such as DCS and fire graphics and also drive external devices including
Technical Parameters
Specification |
Parameter |
Working Voltage |
220 V AC ±15% |
Backup Power Supply |
External 12 V DC / 24 Ah × 2 |
Display Mode |
Color LCD Display |
Total Loops |
4 Loops |
Max. Channels per Loop |
32 Channels |
Communication Protocol |
RS485 (Modbus RTU) |
Power Consumption |
<250 W |
Concentration Units |
%LEL, ppm, %VOL, mg/m³ |
Alarm Types |
High/Low Limit Alarm, Fault Alarm |
Alarm Relay Output |
6 groups, rated 1 A at 220 VAC |
Operating Temperature |
-10°C to 55°C |
Operating Humidity |
≤95% RH (Non-condensing) |
Installation Method |
Cabinet / Wall-mounted |
Controller Dimensions (mm) |
484 × 270 × 179 |
Backup Box Dimensions (mm) |
403 × 253 × 187 |
Features
Equipped with a high-speed core processor for efficient and stable operation.
Built-in RS485 isolation chip to effectively reduce system failures.
Equipped with 6 relay output sets.
Supports RS485/Modbus RTU signal output for connection to host systems such as computers.
Supports alarm status hold function.
Supports alarm record storage and retrieval with a capacity of 1000 records.
Modular design with 4-loop cyclic display: each loop supports simultaneous display of values and status for 32 channels.
