Combustible Gas Alarm Controller(JH-FII, JH-FD, JH-FK)
The combustible gas alarm controller is used in areas where combustible gases are produced, transported, stored, and filled. It monitors combustible gas concentration from point-type detectors with 4–20 mA signals, and when preset alarm values are reached it outputs alarm and control signals to prompt timely safety actions on site. It can be integrated with DCS, fire graphics, and other systems to start external equipment such as exhaust fans and solenoid valves, and it is suitable for non-explo
Technical Parameters
Item |
Specification |
Operating Voltage |
220V AC ±15% |
Backup Power |
12V DC / 1.3Ah × 2 |
Display Mode |
LCD display |
Supported Detector Quantity |
1–2 channels |
Communication Mode |
4–20mA |
Power Consumption |
≤10W |
Concentration Unit |
%LEL, ppm, %VOL, mg/m³ |
Alarm Type |
High & low limit alarm, fault alarm |
Relay Output |
2 groups linkage, 1A 220VAC |
Operating Temperature |
-10°C to 55°C |
Operating Humidity |
≤95%RH (non-condensing) |
Installation Method |
Wall mounted |
Overall Dimension |
264 × 86 × 324 mm |
Features
Using high-speed core processors for efficient and stable operation;
Compatible with detectors that support 4–20mA signals;
The controller applies multi-level signal filtering to stabilize measured data;
Built in 2 sets of relay outputs;
Supports RS485/Modbus RTU communication and can connect to higher-level systems such as computers;
Provides alarm status latching functionality;
Supports alarm record storage and retrieval, with a capacity of 1000 records;
Modular design; each circuit operates independently.
