Dust Explosion Demonstrator
Classification：
Physics
Product Model：
TP6029
Grade：
Junior high school
Function Description：
Used to explore the experimental principle of dust explosion.
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Composition
Dust explosion experiment device body, ignition gun, plastic medicine spoon, dovetail clip, fireproof rack, starch, flat candle
Function
1. Used to explore the experimental principle of dust explosion.
2. The combustible dust is diffused in the air by blowing the dust ball, and when it encounters the lit candle, it burns rapidly in the sealed box and causes an explosion. The main body of the experiment device is made of transparent material, which can clearly observe the whole process of starch combustion and explosion, and deepen students' understanding of combustion conditions.
3. There are candle placement area and starch placement area signs in the main body of the experiment device, and the experimental operation is simple and efficient.
4. The experiment device is small, the experimental drug dosage is scientifically designed, and it is highly safe.
Experiment
Explore the experimental principle of dust explosion, recognize the hazards of dust explosion, etc.
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Microphone collects sound signal using to electret microphone. The microphone consists of dust gauze, shell, vibrating diaphragm, spacer, back plate, copper ring, cavity and PCB. The microphone is formed to a capacitor with vibrating diaphragm, spacer and back plate. There are charge on the plastic vibrating diaphragm. Once it is affected by sound, the diaphragm starts vibrating so that distance between diaphragm and back plate changes. The difference Δd is generated. According to C=εS/4πkd, the capacitance will be changed by ΔC. According to C=Q/V (Q is electric charge quantity), due to the change of ΔC, Q is constant so that voltage will change by ΔV. The sound signal is transfer to electric signal. Sensor circuit transfer the electric signal into analog signal under standard range.
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7F, No.1 Building, Tianan Cyber Park, No.36 Yongfeng Road, Qinhuai District, Nanjing, China. (R&D centre)
No.306 Wenchang Road, Yongyang Street, Lishui Disctric, Nanjing, China. (Manufacturing base)
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