GBD20MA mining intrinsic safety vibration sensor transmitter

1.1 Product Functions and Uses

This instruction applies to GBD20MA mining intrinsic safety vibration sensor transmitter(hereinafter referred to as sensors).

This series of sensors is based onGB 3836.4-2010 Explosive Atmosphere Part 4: Inherent Safety Type

The device protected by 'i'.

The components of this sensor areHZ-892A， Suitable for continuous measurement of vibration of coal mine electromechanical equipment, used in places with explosive gas mixtures, transmitting 4-20mA electrical signals, as a dedicated sensor for motors and other equipment, and can also measure the vibration changes of other electromechanical equipment.

1.3 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 withstandharshStorage 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)