GTH500(A) Carbon monoxide sensorDetailed product description：

The GTH500 (A) carbon monoxide sensor (hereinafter referred to as the sensor) is a high-precision instrument used for continuous detection of carbon monoxide concentration in mines. Sensors can measure and display the concentration of carbon monoxide in the mine in real time, and generate sound and light alarm signals based on the concentration value, and output 485 digital signals corresponding to the concentration of carbon monoxide. Sensors can make early predictions and forecasts of various factors that may cause fires and explosions, such as coal seam spontaneous combustion, mechanical and electrical equipment, and transportation belt accidents, in mines with gas and coal dust explosions. In addition to being used in conjunction with our KJ70 coal mine monitoring system, sensors can also be independently used in various mining fire detection systems.

Environmental requirements for the use of GTH500 (A) carbon monoxide sensor
The sensor should be able to function properly under the following environmental conditions:
a) Environmental temperature: 0 ℃ to+40 ℃;
b) Humidity: ≤ 98% RH;
c) Atmospheric pressure: 80 kPa to 110 kPa;
d) In situations where there is no significant vibration, impact, or water splashing;
e) Wind speed: (0-8) m/s;
f) There is an explosive gas mixture of methane in coal mines, but there is no corrosive gas that can damage insulation.

Main technical specifications of GTH500 (A) carbon monoxide sensor
Working voltage: (9-24) V
Working current: ≤ 100mA
The range of the sensor is (0-500) × 10-6CO.
Output frequency analog signal: (Please choose GTH500 carbon monoxide sensor)
a) Frequency range: (200-1000) Hz;
b) The pulse width is greater than 0.3ms, the voltage in the high-level state is not less than 3V, and the voltage in the low-level output state is less than 0.5V;
Digital transmission signal: (output signal of this model)
a) Transmission method: RS485
b) Transmission port: 1 channel
c) Transmission rate: 2400bps
Output current signal: (Please select GTH500 carbon monoxide sensor)
Output current range: (1-5) mA, (4-20) mA;
Display value stability: Within the measurement range of this sensor, when the concentration of carbon monoxide is constant, the change in the sensor display value or output signal (converted to carbon monoxide concentration value) does not exceed 4 × 10-6CO.