JH-FD Type Combustible Gas Alarm Controller

I. Product Overview

The JH-FD type combustible gas alarm controller is used in places involving the 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 concentration reaches the set alarm level, it outputs corresponding alarm and control signals, prompting 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 like 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 2: Product Features

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

2. Compatible with detectors that can connect to 4~20mA signals.

3. The controller employs multi-stage signal filtering processing to ensure stable signal data.

4. Built-in 2 relay outputs

5. Outputs RS485/Modbus RTU signals, connectable to computers and higher-level systems.

6. Features alarm status retention function;

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

8. Modular design, each circuit operates independently.

III. Technical Specifications

Working Voltage: 220V AC ±15%

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

3. Display Method: LCD Display

4. Compatible Detector Capacity: 1~4 Channels

5. Communication Method: 4~20mA

6. Power Consumption: ≤25W

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

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

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

10. Operating Temperature: -10°C to 55°C

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

12. Installation Type: Wall-mounted

13. Dimensions (mm): 360*90*280