Explosion-proof point-type heat-sensitive fire detector for battery compartment / special gas cabinet / explosion-proof temperature sensor for analysis cabin / RS485

Battery Compartment Explosion-Proof Point-Type Heat Fire Detector/Special Gas Cabinet/Analysis Shelter Explosion-Proof Heat Detector/RS485/Switch Quantity/Modbus-RTUProtocol

I. Overview:

The HAWG-D-2 Explosion-Proof Smoke Fire Detector is a detector with RS485 signal output, which can be matched with any upper computer (controller) with RS485 communication interface.

When the on-site temperature reaches the set threshold, the indicator light of the detector stays on continuously and sends an alarm signal to the controller. Only after the system is reset or power is briefly cut off and then re-powered, the indicator light will return to the flashing (patrol inspection) state.

This product meets the requirements of GB3836.1—2000 <>, GB3836.2--2000 <> and GB3836.4--2000 <>. It is suitable for places containing flammable and explosive mixed gases in industries such as petroleum, chemical industry, military industry, metallurgy, and pharmaceutical. It has passed the inspection of the inspection unit and obtained the explosion-proof qualification certificate.

II. Features:

The heat-sensing part of this detector uses the sensitivity of thermistors to temperature to detect the ambient temperature, making it especially suitable for places with severe temperature rise during fires. It has good performance in insect prevention, dust prevention, and resistance to external light interference. It has a novel structure, beautiful appearance, stable and reliable performance, and strong moisture resistance.

III. Technical Specifications:

1. Explosion-proof type: Flameproof type

2. Explosion-proof mark: ExdIIBT6

3. Ambient temperature: -10℃~+55℃

4. Relative humidity: ≤95% (non-condensing)

5. Atmospheric pressure: 80~110KPa

6. Working voltage: DC24 V±4V

7. Static current: ≤60uA

8. Alarm current: ≤10mA

9. Alarm temperature: 60℃

10. Alarm reset: Instant power-off (10s Min, DC2.5V Max)

IV. Installation Notes:

1. During maintenance and upkeep, handle with care to avoid damaging the detector.

2. There should be no obstructions within 0.5m around the detector.

3. The horizontal distance from the detector to the edge of the air conditioning supply air outlet shall not be less than 1.5m.

4. The horizontal distance from the detector to the wall or beam edge shall not be less than 0.5m.

5. When installing detectors on the ceiling of inner corridors with a width of less than 3m, they should be arranged in the middle. The installation spacing of the detectors shall not exceed 15m, and the distance from the detector to the end wall shall not be greater than half of the installation spacing of the detectors.

6. The detector should be installed horizontally. If it must be installed obliquely, the inclination angle shall not be greater than 45°.

7. The detector base shall be installed firmly, and its wire connection must be reliable.

8. The confirmation light of the detector shall face the main entrance direction that is convenient for personnel to observe.

9. It is strictly prohibited to disassemble under power in flammable and explosive places.

10. Do not damage the explosion-proof surface during installation, and keep it clean. The fastening screws of the explosion-proof surface shall be tightened evenly, and care shall be taken to ensure that no wires or other foreign objects are caught in the explosion-proof surface.

11. Note: During installation, do not remove the dust cover to prevent dust from entering and affecting the accuracy of the detector. The dust cover shall be removed when the system is in normal operation.

V. Working Principle:

This detector uses a thermistor as the sensor. The signal output by the sensor is transformed through an amplification circuit and then input to a single-chip microcomputer, which processes the signal using an intelligent algorithm. When the single-chip microcomputer detects a fire alarm signal, it lights up the fire alarm indicator and outputs the fire alarm signal. The alarm output signal adopts the RS485 output method.

RS-485 Communication: It adopts a standard RS-485 communication interface, and the communication baud rate can be selected as: 2400bps, 4800bps, 9600bps, 19200bps (the factory default baud rate is 9600bps, and the 485 address is 5). Modbus-RTU Protocol: The alarm status register addresses are 01, 02, 03 or 04, which are read using function codes 01, 02, 03 or 04. The status is "0" or "1" ("0" means normal, and "1" means alarm).

All product certifications are complete, welcome to call for consultation. www.szhsj119.com

Shenzhen Hong盛高科 Electronic Co., Ltd.

Contact: Mr. Chen Cheng

Phone: [15889370119] (WeChat same number)