Introduction to GUJ19 Coal Stacking Sensor: This product has complete functions and is not only suitable for environments with gas and coal dust hazards underground coal mines. It is also suitable for mines such as coal, metallurgy, chemical industry, building materials, as well as harsh environmental conditions such as coal preparation plants, steel plants, power plants, ports, etc. Structural features and working principle: composed of shell, coal level contact rod, switch contacts, wiring terminals, and other parts& nbsp; The working principle is mechanical switch type. When the conveyor head is buried, the warehouse is full, and the coal hopper is full, the coal touches the contact of the coal level sensor and pushes the contact rod off line. The swing angle between the actions is greater than 15 degrees; When the load reaches 3 ?, the sensor will activate and automatically cut off the power supply of the conveyor to achieve coal level protection& nbsp; Performance parameters: 1. Contact capacity: C; 12V/0.  (Note: Used in essential circuits) & nbsp;2、 Contact resistance≤ 0.1Ω， After vibration and impact≤ 0.2Ω；& nbsp;3、 Action angle: 30 °& plun;3?； Reset angle: 8 ?& plun;3?； 4、 Action performance: When the sensor contact rod deviates from the normal position to the action angle, the two output terminals should be connected; When the sensor contact rod automatically returns to its original position and reaches the reset angle, the two output terminals should be disconnected& nbsp;5、 Rod action force:≤ 9.8  N。 6、 External dimensions: 369mm× 157mm× 71mm  7. Weight:; 3.0kg. Environmental conditions for use; 1. Atmospheric pressure: 80kPa~110kPa& nbsp;2、 Environmental temperature: -20 ℃~40 ℃& nbsp;3、 Average relative humidity:& lt;96RH（25℃）；& nbsp;4、 Underground coal mines with methane and coal dust mixtures& nbsp;5、 Not sufficient to corrode and damage the metal shell and electrical insulation& nbsp;6、 No water or liquid immersion& nbsp;7、 In an environment without strong vibration and impact& nbsp; Coal stacking sensor GUJ19 logistics: SF Express, Shentong Express, Yuantong Express, Zhongtong Express, Tiantian Express, EMS Postal Express, and Quanguo Rail Transit. Some product models of Zhuoxin Company: GVD1 mining tear sensor GVD-2L-S tear sensor GVD10 mining tear sensor GVD16 tear sensor GCD30 mining intrinsic safety tear sensor GVD1200 tear sensor HG-P anti deviation switch JHSL longitudinal tear protection switch JPNS-11 non-contact deviation switch JYB-GDZL-Z-A photoelectric detection longitudinal tear switch JYB-GDZL-Z-C sensing longitudinal tear protection device JYB-LLJ-B material flow detector bidirectional door frame structure KBJ 380-5 emergency stop switch KBW-220L anti reciprocating pull rope switch KG1007A tape deviation switch KGA 1A bidirectional rope switch KGE9A type deviation switch KGE28 type mining tape deviation switch KGL-5100 limit switch ;