RF Level Switches Working Principle
RF level sensors are the Capacitance level detectors which are sometimes called as admittance level sensors. These sensors make use of radio frequency balanced impedance bridge circuit to find out
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Category : Switches
Pressure Switches, Flow Switches, Temperature Switches, Level Switches etc.
Relays in Ladder Logic Tutorials
Electromechanical relays may be connected together to perform logic and control functions, acting as logic elements much like digital gates (AND, OR, etc.). A very common form of schematic diagram showing the
Relay Principle & its Types
A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are
Reed switch Working Principle
The reed switch is an electrical switch operated by an applied magnetic field. It was invented at Bell Telephone Laboratories in 1936 by W. B. Ellwood. It consists of a
Two Wire Sensors Working Animation
2-Wire vs. 3-Wire Sensors can also be broken down by their wiring configurations. The most common are 2-wire and 3-wire. Two-wire devices are designed to wire in series with the
Proximity switches Circuit Diagram Operation
A proximity switch is one detecting the proximity (closeness) of some object. By definition, these switches are non-contact sensors, using magnetic, electric, or optical means to sense the proximity of objects. A
Pushbutton switches and Types of Switches
A hand switch / Pushbutton switch is exactly what the name implies: an electrical switch actuated by a person’s hand motion. These may take the form of toggle, pushbutton, rotary, pull-chain,
Basics of Switches – NO/NC Contact
Perhaps the most confusing aspect of discrete sensors is the definition of a sensor’s normal status. Electrical switch contacts are typically classified as either normally-open or normally-closed, referring to the open or
Differential Pressure Switch Principle
The Differential Pressure Switch just like the pressure switch is a simple electro- mechanical device that operates on the basic principles of Levers and opposing forces. They are mainly used
Zero Speed Switch Working Principle
Monitoring Speed is essential in any automation process. Speed of any equipment driven by an electric motor can very due to variety of reasons e.g. overload, underload, breakage of transmission