1.Overview GSG15 Mining intrinsically safe speed sensor is suitable for coal level protection signal detection of mine belt conveyor protection device, which is suitable for coal mine underground environment containing explosive gas (CH4), open-pit coal mine, coal preparation plant and other workplaces.
2.The main technical parameters 2.1Explosion-proof type: Intrinsic safety type for mining, explosion-proof mark: ExibI Mb.
2.3 Intrinsically safe working voltage: DC12V.
2.4 Intrinsically safe working current: 40mA.
2.5 Measuring range: 0~15r/min; basic error: ±1% (F.S).
2.6 Action performance: The magnetic steel rotates with the rotation of the drum, and each time the magnetic steel passes the sensor, the reed switch conducts once.
2.7 Output signal: 1 channel 0~0.25Hz passive contact type frequency signal output, contact capacity DC12V/1A (resistive load). When it is on, the contact resistance is ≤0.5Ω, the leakage resistance when it is off is ≥100kΩ, and the duty cycle is 50% to 96%.
2.8 Action distance: ≤10mm, release distance: ≥50mm (the external dimensions of the magnetic steel sample block: a ring with an outer diameter of 45mm and an inner diameter of 22mm, filled with plastic in the center. The magnetic induction intensity range of the magnetic steel surface: 900Gs~1200Gs).
2.9 Associated equipment: ZJZ-SI-Z mine belt conveyor protection device host, produced by Huainan Wantai Electronics Co., Ltd.; explosion-proof certificate number: 1072593; safety mark certificate number: MAB070117.
2.10 The transmission cable length is less than 1000m, the distributed capacitance is less than 0.1μf/Km, and the distributed inductance is less than 1mH/Km.
2.11 Dimensions: 99mm×82mm×47mm.
2.12 Weight: 200g.
3.Environmental conditions 3.1 Normal working conditions:
3.1.1 The ambient temperature is -5ºC~40ºC;
3.1.2 The altitude does not exceed 2000m (air pressure 80KPa~110KPa);
3.1.3 The relative humidity of the surrounding air ≤98% (25ºC);
3.1.4 In mines containing explosive gases such as methane;
3.1.5 Places without significant shaking and shock vibration;
3.1.6 In an environment where there is no gas or vapor that damages the insulation;
3.1.7 A place that can prevent dripping water.
3.2 The worst storage and transportation conditions:
High temperature: 60ºC;
Low temperature: -40ºC;
Average relative humidity: 95% (25°C).
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