1. Overview of YBD200

YBD200 explosion-proof temperature inspection instrument for mining is designed and produced according to the provisions of GB/T3836.1-2000 "Electrical Equipment for Explosive Gas Environment Part 1: General Requirements", GB/T3836.2-2000 "Electrical Equipment for Explosive Gas Environment Part 2: Flameproof "d"", MAJY01-001-09 "Inspection Specifications for Safety Signs of Mining Products", and is manufactured into a flameproof product for mining. This product can detect, display, adjust and control the temperature of bearings, bushings, and pipelines or container media of explosion-proof motors or other mechanical products. It is specially used in places with explosive mixtures of methane and underground coal mines. The shell is made of cast iron or cast steel, and the surface is sprayed with anti-corrosion paint.

The explosion-proof mark is ExdbI Mb

2. Features of YBD200

1. Sensitive temperature measurement, convenient observation, high accuracy, good stability, low power consumption, no magnetic field interference, strong shock resistance;

2. Can display on site and output remote transmission signals;

3. Has integrated functions of collection, display and adjustment.

3. Model Description

4. YBD200 Technical Specifications

Temperature measurement range: 0～200℃

Number of temperature measurement points: 1～8 (selectable according to user needs)

Connected sensor: Pt100

Power supply voltage: AC127V/50HZ, AC220V/50HZ or DC24V

Working current: ≤50mA

Output signal: contact switch

Output contact capacity: AC220V/3A (resistive, normally open contact)

Alarm temperature setting: Alarm signal unified setting or separate setting

Uniform setting: Two switch signals can be set, upper limit T1, upper upper limit T2.

Separate setting: The detection points are divided into two groups and set separately, one group T1 and the other group T2 (set according to user requirements at the factory).

Accuracy level: 1.0

Weight: 7Kg

Display mode: LCD backlight

Working mode: Patrol display

Display time: 6S cycle

5. YBD200 selection instructions

The following technical conditions should be specified when users select the model:

1. Number of temperature measurement points

2. Power supply voltage

3. Alarm signal setting

Alarm signals can be set uniformly or separately.

Uniform setting: Two switch signals can be set, upper limit T1, upper upper limit T2 (e.g. 5-point temperature measurement, 1-5 points

Set the upper limit alarm temperature to 80℃, and the upper upper limit alarm temperature to 135℃).

Separate setting: The detection points are divided into two groups and set separately, one group is T1 and the other group is T2 (e.g. 5-point temperature measurement, 1 and 2 points are set to 80℃, 3, 4, 5 are set to 135℃).

4. Measuring distance: the length from the temperature measuring point to the display head

5. If the sensor is installed, the size of the protective tube and the size of the installation thread must be indicated: such as ￠10×50/M16×1.5

6. Outgoing direction: divided into left and right directions, those without instructions are outgoing on the left

7. Other special requirements

Example: YBD200 technical conditions: 5-point temperature measurement, voltage 127V, alarm signal separation setting, 1-2 points 80℃, 3-5 points 135℃, measuring distance 2M, outgoing on the right.

6. YBD200 working conditions

Ambient temperature: -20℃～+40℃

Relative humidity: ≤90% (+25℃)

7. YBD200 working principle diagram

8. Dimensions of YBD200

The dimensions of the header are length × width × thickness, i.e. 195 × 190 × 110.

Schematic diagram of the internal terminal of the junction box:

1 and 2 are power terminals, 3, 4, and 5 are output signal terminals, and the internal contact form is shown in the lower right figure:

The alarm temperature setting of the instrument when leaving the factory is:

~ Road bearing temperature measurement ℃ alarm, J1 control

~ Road bearing temperature measurement ℃ alarm, J2 control

The dimensions of the instrument fixing flange are as shown in the figure below, and it can also be hung.

IX. Input signal wiring method

Note:

1. Connect the green wire (1) of the instrument cable to the white wire of the front bearing platinum thermal resistor;

2. Connect the red wire (2) of the instrument cable to the white wire of the rear bearing platinum thermal resistor;

3. Connect the blue wire (3), white wire (4), and purple wire (5) of the instrument cable to the white wire of the stator platinum thermal resistor;

4. The orange and brown wires of the instrument cable are common wires and are connected to the red wire of the bearing platinum thermal resistor.

10. Installation and precautions of explosion-proof instruments　

1. During the installation and use of the instrument, the relevant provisions of the "Electrical Installation Regulations for Hazardous Locations of the People's Republic of China" shall be observed;

2. During installation, check whether the explosion-proof mark on the instrument nameplate is consistent with the installation environment;

3. The connecting wire of the instrument should be copper shielded cable with a cross-sectional area of ​​not less than 0.2 square millimeters;

4. Open the instrument junction box, unscrew the clamping nut of the cable entry device with a wrench, firmly connect the cable to the terminal (or terminal) in the junction box, then cover the junction box cover and tighten the fastening bolts at the four corners;

5. The grounding screw on the instrument must be reliably grounded with a grounding wire;

6. During installation, the signal transmission line should be fixed with a tie head every 300mm. When the signal transmission line is too long, it can be tied in a suitable position, never thrown around, and kept away from heating equipment;

7. The power supply can be turned on only after confirming that the wiring, installation, and power supply are correct;

8. It is forbidden to open the explosion-proof instrument with power on;

9. When the sealing ring of the introduction device ages and hardens, it should be replaced in time;

The size of the sealing ring is

10. The minimum outer diameter of the cable used by the user is ø6.

Delivery time: This instrument is a customized product. Nanyang Huaye Explosion-proof Instrument Co., Ltd. promises to deliver within 7 working days after the order is placed. If you have a faster requirement, please contact us in time.

The original instrument model is YBS-5, a mining explosion-proof digital temperature display and regulator, which was later upgraded to YBD200 with improved circuit boards.