GBD20 Mining Intrinsic Safety Vibration Sensor (with Coal Safety Certificate)

GBD20 Mining Intrinsic Safety Vibration Sensor (with Coal Safety Certificate)

1. GBD20 Mining Intrinsic Safety Vibration Sensor (with Coal Safety Certificate)Product Overview

1.1 Product Functions and Uses

This instruction applies to GBD20 intrinsically safe vibration sensors for mining (hereinafter referred to as sensors).

This series of sensors comply with GB/T3836.4-2021 "Explosive Atmosphere Part 4: Intrinsically Safe Type

The device protected by 'i'.

The component of this sensor is GBD20, which is suitable for continuous measurement of vibration of coal mine electromechanical equipment. It is used in places with explosive gas mixtures and transmits 4-20mA electrical signals. It is a dedicated sensor for motors and other equipment, and can also measure the vibration changes of other electromechanical equipment.

1.2 Explosion proof type and explosion-proof mark

a) Explosion proof type of sensor: mining intrinsic safety type

b) The explosion-proof mark is:“Ex ib I Mb”

2. Environmental and storage conditions

2.1 Working environment conditions for sensors:

a) Environmental temperature: 0 ℃ to+40 ℃;

b) Relative humidity: not exceeding 95% (25 ℃);

c) Underground coal mines with methane and coal dust explosiveness;

d) Atmospheric pressure: 80kPa to 116kPa;

e) In a corrosive gas environment without damaging insulation.

2.2 Sensors should be able to withstand harsh storage and transportation conditions:

a) Environmental temperature: -40 ℃ to+60 ℃

b) Average relative humidity: not exceeding 95% (+25 ℃);

c) Vibration: 50m/s ²;

d) Impact: 500m/s ².

3. Technical indicators

3.1 Basic parameters of the product:

3.1.1 Measurement range: (0-20) mm/s

3.1.2 Basic error: ≤± 10% (F.S)

3.1.3 Output signal: 4mA~20mA (two-wire system)

3.1.4 Applicable frequency range: (5-500) Hz

3.1.5 Transmission distance: 2Km (MHYVP type mining flame-retardant cable: cross-sectional area: 1.5mm2, electrical)

Resistance: ≤ 12.8 Ω/km, distributed inductance: ≤ 1mH/km, distributed capacitance: ≤ 0.1 µ F/km)

3.2 Intrinsic safety parameters: Ui: 12.4V, Ii: 2A, Ci: 0uF Li: 0mH

Rated working voltage: DC12V, working current 40mA

3.3 Sensor protection level: IP54