The JH-Z128 combustible gas alarm controller is suitable for environments involving the production, transportation, storage, and filling of combustible gases. It monitors the concentration of combustible gases in the air, detected by point-type combustible gas detectors (RS485 digital signals).
When the set alarm threshold is reached, corresponding alarm and control signals are output to alert on-site personnel to take timely safety measures. It can connect to systems such as DCS and fire graphics, while also activating external devices like exhaust fans and solenoid valves to ensure personnel and equipment safety, preventing accidents caused by flammable gas leaks.
The controller is suitable for non-explosion-proof areas such as fire control rooms and control centers.
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Technical Parameter
Specification | Parameter |
Working Voltage | 220V AC±15% |
Backup Power Supply | External 12V DC / 24Ah × 2 |
Display Mode | Color LCD Display |
Total Loops | 4 Loops |
Max. Channels per Loop | 32 Channels |
Communication Protocol | RS485 (Modbus RTU) |
Power Consumption | <250W |
Concentration Units | %LEL, ppm, %VOL, mg/m³ |
Alarm Types | High/Low Limit Alarm, Fault Alarm |
Alarm Relay Output | 6 groups, 1A 220VAC rated |
Operating Temperature | -10℃ ~ 55℃ |
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 sets of relay outputs.
Supports RS485/Modbus RTU signal output for connection to host systems such as computers.
Features alarm status hold function.
Supports alarm record storage and query 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.
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