Explosion-proof point-type photoelectric smoke fire detector for battery compartment / special gas cabinet / analysis shelter explosion-proof smoke detector / RS485

Flameproof Point-Type Photoelectric Smoke Fire Detector for Battery Compartment/Special Gas Cabinet/Flameproof Smoke Detector for Analysis Cabin/RS485/Switching Value/Modbus-RTUProtocol

I. Overview

The HAJB-Y-2 flameproof 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 smoke concentration exceeds the set threshold, the indicator light of the detector stays on and sends an alarm signal to the controller. Only after power-off and re-power-on, the indicator light will return to the flashing (inspection) state.

This product meets the standards 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 been inspected and qualified by the inspection unit and obtained the flameproof certificate.

II. Features:

This detector adopts a new scattering technology and imported photoelectric devices, which improves the reliability, stability and consistency of the sensor. It also adopts a unique maze design, with good performance in insect prevention, dust prevention and external light interference resistance. It has a novel structure, beautiful appearance, stable and reliable performance, and strong moisture resistance.

III. Technical Characteristics:

1. Flameproof Type: Intrinsically Safe-Flameproof Composite (with waterproof cover)

2. Flameproof Mark: Exd ibIIB T6Gb

3. Ambient Temperature: -20℃~+70℃

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

5. Atmospheric Pressure: 80~110KPa

6. Working Voltage: DC24 V±4V

7. Static Current: ≤120uA

8. Alarm Current: 10mA≤I≤30mA

9. Response Threshold: 0.10dB/m~0.27dB/m

10. Alarm Reset: Momentary 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 shielding objects 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 less than 3m, they should be arranged in the middle. The installation spacing of 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 detector.

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 people to observe.

9. It is strictly forbidden to disassemble in flammable and explosive places with power on.

10. Do not damage the flameproof surface during installation, and keep it clean. The fastening screws of the flameproof surface shall be tightened evenly, and pay attention that no wires or other foreign objects are mixed in the flameproof 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 should be removed when the system is running normally.

V. Working Principle:

This detector uses the infrared scattering principle to detect fires. The circuit is mainly composed of an infrared transmitting part and a receiving part. The transmitting tube and the receiving tube are placed in an optical darkroom, which can block external stray light interference but does not affect the entry of smoke and dust. In the smoke-free state, only very weak infrared light is received. When smoke and dust enter, the received light signal is enhanced due to scattering. When the smoke and dust reach a certain concentration, an alarm signal can be output. To reduce interference and power consumption, the transmitting circuit works in an intermittent mode, which can extend the service life of the transmitting tube. The alarm output signal adopts RS485 output mode.

RS-485Communication: Adopts standard RS-485 communication interface. The communication baud rate can be selected as: 2400bps, 4800bps, 9600bps, 19200bps. (The default baud rate at factory is 9600bps, and the RS485 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, "1" means alarm).

All product certifications are complete, welcome to inquire. www.szhsj119.com

Shenzhen Hongsheng Gaoke Electronics Co., Ltd.

Contact: Mr. Chen Cheng

Tel: [15889370119] (WeChat same number)