English Translation of GBD20 Mine Explosion-proof Vibration Sensor
GBD20 Mine Explosion-proof Vibration Sensor
1. Product Overview of GBD20 Mine Explosion-proof Vibration Sensor
1.1 Product Function and Purpose
This manual applies to the GBD20 mine intrinsically safe vibration sensor (hereinafter referred to as the sensor).
This series of sensors complies with GB/T3836.4-2021 "Explosive Environments - Part 4: Equipment Protected by Intrinsic Safety "i"".
The model of this sensor is GBD20, which is suitable for continuous measurement of vibration of coal mine electromechanical equipment. It can be used in places with explosive gas mixtures, transmit 4-20mA electrical signals, and is a special sensor for motors and other equipment. It can also measure the vibration changes of other electromechanical equipment.
1.2 Explosion-proof Type and Explosion-proof Marking
a) Explosion-proof type of the sensor: Mine intrinsically safe type
b) Explosion-proof marking: "Ex ib I Mb"
2. Environmental, Storage and Transportation Conditions
2.1 Operating Environment Conditions of the Sensor:
a) Ambient temperature: 0℃~+40℃;
b) Relative humidity: not more than 95% (25℃);
c) Underground coal mines with methane and coal dust explosion risks;
d) Atmospheric pressure: 80kPa~116kPa;
e) In an environment free of corrosive gases that damage insulation.
2.2 Severe Storage and Transportation Conditions That the Sensor Can Withstand:
a) Ambient temperature: -40℃~+60℃;
b) Average relative humidity: not more than 95% (+25℃);
c) Vibration: 50m/s²;
d) Impact: 500m/s².
3. Technical Indicators
3.1 Basic Parameters of the Product:
3.1.1 Measuring range: (0~20) mm/s
3.1.2 Basic error: ≤±10% (F.S)
3.1.3 Output signal: 4mA~20mA (2-wire system)
3.1.4 Applicable frequency range: (5~500) Hz
3.1.5 Transmission distance: 2Km (MHYVP type mine flame-retardant cable: cross-sectional area: 1.5mm², resistance: ≤12.8Ω/km, distributed inductance: ≤1mH/km, distributed capacitance: ≤0.1µF/km)
3.2 Intrinsically Safe Parameters: Ui:12.4V, Ii:2A, Ci:0uF, Li:0mH
Rated working voltage: DC12V, working current: 40mA
3.3 Protection level of the sensor: IP54;