I. Product Overview:

The GT-JH801 Industrial and Commercial Point-type Combustible Gas Detector (hereinafter referred to as the Detector) is an intelligent detector developed by our company that can simultaneously output 4-20mA current signals and RS485 signals with real-time display.

This product features high stability, accuracy, intelligence, and long lifespan, suitable for environments with flammable gases. It displays the concentration of flammable gases in real-time. If the concentration of flammable gases exceeds the set alarm value, the detector outputs a switch signal to trigger external devices, such as sound and light alarms, activating exhaust fans, and closing valves.

II. Product Features:

Digital Module Integrated Display

(2) Utilizes imported infrared sensors, integrated with an advanced digital sensor processing system, offering high measurement accuracy, excellent stability, resistance to poisoning, strong anti-interference capability, and long service life.

(3) Plug-and-play sensor design, with different sensor components, allows for detection of various gas objects, facilitating on-site troubleshooting and convenient maintenance.

(4) Simultaneously supports RS485 and 4-20mA communication methods, with enhanced compatibility.

(5) The detector features automatic identification and display functions for over concentration, sensor short circuit, and open circuit faults.

(6) No calibration required for sensor replacement; intelligent digital sensor component technology with good stability and strong anti-interference capability.

(7) Infrared remote control design, no need to open the cover on-site for detector calibration operations, with a top-opening cover and wiring design.

(8) Built-in 1 set of passive switch output, while another set can output passive switch or DC24V (external sound and light alarm to expand sound and light alarm function).

(9) Built-in isolation chip, effectively reduces system downtime due to failure.

III. Technical Specifications

Sensor Working Principle: Infrared Sensor

(2) Range: 3～100% LEL

Accuracy: ±5% LEL

Zero Drift: ±2% LEL

(3) Response Time: T90 ≤ 30 seconds;

(4) Operating Environment: Temperature: -40℃ to 70℃; Relative Humidity ≤ 95%RH

(5) Operating Voltage: 18~30V DC

(6) Signal Output: 4-20mA current loop output; RS485 output (Modbus RTU)

(7) Display Method: Digital Module Integrated Display

(8) Adjustment Method: Infrared remote control parameter adjustment

(9) Wiring Method: Top cover wiring

(B10) Explosion-proof Type: Diaphragm Type

(B11) Explosion-proof Grade: Ex d IIC T6 Gb

(12) Protection Rating: IP66

Electrical Interface Thread: G3/4