The coal plug switch What is the principle? The principle is that the pressure of the gas is too large, the pressure of the hot water is small, and the water can't pass. And the gas density is small and the water density is high, and the air is generally concentrated at the top of the heating side. The solution is to deflate the top of the heater.
The electronic circuit and the probe are composed of two parts. The electronic circuit includes a high frequency oscillator, a detecting circuit and an output circuit. The probe is composed of a detecting sensor and a protective cover, and the two are insulated from each other and the grounded container, and are oscillated by high frequency. The device provides a stable RF voltage and is transmitted to the detecting sensor. When the material touches the detecting sensor, the unbalanced voltage is output, and after being processed by the demodulator and the amplifier, the relay is driven to operate.
Main Specifications
Electronic unit
(1) Power supply: AC 185-260V AC 2W
DC 15V-30V DC 2W
(2) Signal output: relay contact output,
Contact capacity: AC 220V 5A DC 24V 3A
Number of contacts: two sets of normally open, normally closed contacts
(3) Ambient temperature: -40 ° C ~ 85 ° C
(4) Temperature effect: 0.1PF/20°C
(5) Sensitivity: 0.3PF
(6) Repeatability: ≤+1.6mm
