JH-FII Combustible Gas Alarm Controller

I. Product Overview

The JH-FII type combustible gas alarm controller is used in places such as production, transportation, storage, and filling of combustible gases. It collects the concentration of combustible gases in the air detected by point-type combustible gas detectors (4~20mA signals). When the set alarm value is reached, it outputs corresponding alarm and control signals to prompt on-site personnel to take timely safety measures. It can be connected to systems such as DCS and fire alarm graphics, and can also activate external devices such as exhaust fans and solenoid valves to ensure personnel and equipment safety and prevent accidents caused by the leakage of combustible gases.

Controllers are suitable for non-explosive areas such as fire control rooms and control centers.

Section II: Product Features

Utilizes a high-speed core processor for efficient and stable operation.

2. Compatible with transmitters for 4~20mA signal connections;

3. Employed multi-level signal filtering in the controller to ensure stable signal data.

4. Built-in 2 relay output groups

5. Outputs RS485/Modbus RTU signals, connects to PC and other higher-level systems.

6. Features alarm status hold function;

7. Supports alarm record storage and query functions, with a capacity of 1,000 entries.

8. Modular design with each circuit operating independently.

III. Technical Specifications

Operating Voltage: 220V AC ±15%

2. Backup Power: 12V DC / 1.3Ah * 2

3. Display Method: LCD Display

4. Compatible Detector Capacity: 1~2 Channels

5. Communication Method: 4~20mA

6. Power Consumption: ≤10W

7. Concentration Units: %LEL, ppm, %VOL, mg/m³

8. Alarm Methods: High/Low Limit Alarms, Fault Alarms

9. Relay Outputs: Two sets, interlockable, output capacity: 1A 220VAC

Operating Temperature: -10°C to 55°C

11. Working Humidity: ≤95%RH (Non-condensing)

12. Installation Method: Wall-mounted

13. Dimensions (mm): 264 + 86 x 324