Cảm biến nhiệt độ GWD100 GWD150 Cảm biến nhiệt độ chống cháy của mỏ

Use environmental conditions

The sensor should function properly under the following conditions:

a) Temperature: 0℃～+40℃;

b) Humidity: <100%;

c) Atmospheric pressure: 86 kPa～106kPa;

d) The altitude does not exceed 2000m;

e) Where there is no corrosive gas that destroys insulation in coal mines.

f) Used in hazardous locations with explosive mixtures such as methane and coal dust.

Dimensions and quality

a) Dimensions: 151mm×92mm×42mm;

b) Mass: 550g; 

c) Shell material: ABS engineering plastic.

Main Specifications

1 Rated voltage : 12V.DC, working voltage range of an :( . 9 ~ 24) V.DC, working current: ≤60mA.

2 Measuring range: 0℃～150℃.

3 Basic error: not more than ±2.5%FS.

4 Output signal: 200Hz～1000Hz.

5. Large transmission distance between sensor and control box: 2km.

6   The electrical clearance and creepage distance of intrinsically safe terminals is ≥2.0mm.

7   intrinsic safety parameters

Ui: 24.5V; Ii: 0.85A; Ci: 0 μF; Li: 0 μH.

Structural features and working principle

structure

Small size, light weight, good sealing performance, easy to install . The sensor is convenient and reliable to install, debug and maintain. The sensor adopts integrated temperature components, which is sensitive, reliable, and error-free. The output is a temperature-to-frequency signal.

working principle

The temperature sensor adopts an integrated temperature sensing element. The temperature sensing element has good linearity, stable operation and small detection error range . The detected temperature is amplified by LM358, and the voltage signal is converted into a frequency signal output by the microcontroller P89LPC915.