An optocoupler, also known as an opto-isolator or photocoupler, is a semiconductor device which is used to couple isolated circuits. Within an optocoupler you will find a light emitter and a light sensor. Optocouplers usually come in a semiconductor package, such as SOIC or PDIP.
How does an optocoupler work? Optocouplers work by transferring energy from one circuit to another circuit via an optical transmission path, while providing electrical isolation The light emitter device can come in the form of an LED (light emitting diode) that produces IR or visible light, or a laser diode. The light emitter receives the input and converts it into a light signal. The light detector senses the light emitter and converts it back into an electrical signal.
Optocouplers are often used in high-voltage applications to block the high voltages and variations in voltage. This ensures that, if there is a spike in one part of a circuit, it will not affect other parts. Therefore they are ideal for applications which may experience variations in voltage.
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The K7L-AT50 liquid leakage sensor amplifier by Omron
can detect a wide variety of liquids ranging from water to chemicals with low conductivity. It internally oscillates AC signals provided to the Sensing Band, protecting it from electric corrosion and ensuring ...
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Flowline's general purpose range of level controller displays
which cover an assortment of engineering units. Comes equipped with either a 4-20mA or 0-10mA level sensor inputs, with various configurations to ensure your application is covered. Optional 2 or 4 programmable ...
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A series of liquid level control relays from
ABB for conductive liquids. The CM-ENS range gives a choice of 3 variants each with a compact, space saving housing with the highest fire protection and environmentally friendly materials. Installation is quick ...
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The MultiTrode indicator probe provides continuous level indication
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