I. Product Overview:
The JH-TCQ-□(D) series toxic gas detectors (hereinafter referred to as detectors) are an intelligent model developed by our company that can simultaneously output 4-20mA current signals and RS485 signals while displaying them in real-time. This product boasts high stability, accuracy, and intelligence. The detector is primarily used in environments with toxic and harmful gases, displaying the concentration of the gas being tested. When the concentration of a gas being tested in the field exceeds the set alarm value, the detector's built-in two sets of passive switches activate, allowing for the联动 of external devices such as sound and light alarms, ventilation, and valve closure. The detector is designed in accordance with the current national standards "GB3836.1-2010 Explosive Atmospheres, Part 1: Equipment General Requirements" and "GB3836.2-2010 Explosive Atmospheres, Part 2: Equipment Protected by a Flameproof Enclosure 'd'" and has passed the audit of the explosion-proof safety inspection station for instruments and meters.
II. Product Features:
(1) Colorful ultra-bright LED digital module integrated display;
(2) Utilizes imported electrochemical sensors, combined with advanced sensor digital processing system, offering high measurement accuracy, excellent stability, and strong anti-interference capability.
(3) Plug-and-play sensor design, with various sensor components, enables detection of different gas objects, offering convenient on-site troubleshooting and easy maintenance.
(4) Supports both RS485 and 4-20mA communication methods, offering enhanced compatibility.
(5) The detector features automatic recognition and display capabilities for over-concentration, sensor short circuit, and open circuit faults.
(6) No calibration required for sensor replacement; intelligent digital sensor component technology, excellent stability, and strong anti-interference capability.
(7) Infrared remote control design; calibration of the detector can be completed without opening the cover on-site, and features a rear cover wiring design.
(8) Equipped with 2 sets of passive switch outputs, capable of connecting external sound and light alarm devices to expand sound and light alarm functions.
Section 3: Technical Specifications
(1) Sensor Working Principle: Electrochemical
(2) Range of Measurement: For different gases; see attached table (only includes some common gases; for details, please consult our company)
Accuracy: ±5% FS
(3) Response Time: Varies by gas; see attached table.
(4) Operating Environment: Temperature: -20℃ to 50℃; 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: LED digital tube display
(8) Adjustment Method: Infrared remote adjustment of parameters;
(9) Explosion-proof Type: Intrinsically Safe Type
(10) Explosion-proof rating: Ex d IIC T6 Gb
(11) Protection Level: IP66
(12) Electrical Interface Thread: G3/4
IV. Attachment Table: (This table displays only a partial list of common toxic gases; for details, please consult our company.)
