With an increase in the level of the material, the impeller is immersed in the material, and its rotation stops, which causes a stop of the worm wheel. The worm, rotating, begins to move along its axis and, overcoming the resistance of the spring, presses onto the microswall, which tears the power circuit of the electric motor and switches the alarm circuits. With a decrease in the level of the impeller, the spring returns the worm to the operating position, the microswitch turns on the electric motor and switches the alarm circuit. To improve the quality of the work of your enterprise, you may need to conduct an energy audit to order which you can: Energy Audit Prices .
This group of devices includes capacitive devices – electronic signaling devices of the type of ESU of various modifications and electrical appliances – relay alarms, ERSU -2 electrical signaling device, ICS resistance relay, IGAALIZER of the presence of SNR -1063M ore, semiconductor relay
Capacitive devices such as ESU of various modifications (ESU-1M, ESU-2A, ESU-1K, MES-1) are used to control one or two specified levels of liquid, powdered and lump materials.
The principle of operation of these devices is based on a change in the container between the two electrodes (or the electrode and the wall of the hopper) placed in the controlled environment, which occurs when filling (emptying) of the hopper due to the difference in dielectric constant air and controlled material.
Changing the capacity causes a change in the own frequency of oscillations of the contour, configured to resonance in the presence of (absence) of the material at a given level, which leads to resonance frequency, which is fixed by the electromagnetic relay installed at the output of the electronic circuit.
Structurally, devices are designed in the form of sensors with electrodes of various structures and electronic blocks.
Electrical appliances are used to monitor the level of liquid, bulk and lumpy electroding materials. The principle of operation of these devices is based on the closure of the electrical circuit through controlled materials.
Mechanical signaling devices
