A piezo-electric crystal oscillates the forks at their natural frequency. Changes to this frequency are continuously monitored. In most models, a float encircling a stationary stem is equipped with powerful, permanent magnets. As the float rises or lowers with liquid level , the magnetic field generated from within the float actuates a hermetically seale magnetic reed. Gems liquid level sensors and switches provide high-reliability monitoring and detection of a wide range of fluid media.
Requirements can range anywhere from the sensing of cooking oil, to hydraulic fluids, to diesel fuel tanks (gas level indicator), to water and wastewater, to biohazards, to even deionized or potable water.
The TUFFY II achieves switching action through the use of repelling magnets on the float assembly and the switch mechanism. Separating the two magnets is a nonmagnetic pressure barrier. The float follows the liquid level as it changes, causing the attached float magnet to move into the field of the switch magnet. These forces act upon the. Magnetrol offers an extensive range of innovative level , flow and volume controls for process industries.
Find out more about the Magnetrol products that will meet your level , flow or interface control challenge. Mobrey magnetic level switches are ideal for high and low liquid level alarm, overfill alarm, and pump control duties. Electrical ratings are for resistive loads ONLY.
For inductive loads, maximum life will be obtained with the use of appropriate transient suppression such as an MOV or TVS.
The circuit detects this frequency change and indicates the presence of mass contacting the fork. Level switch overview 1. The forks’ vibrating motion tends to shake off any accumulated material, such that this style of level switch tends to be resistant to fouling. Capacitive level switch designed to give a low level alarm.
Echotel 9Switch pdf manual download. VEGASWING is used as a universal level switch in all liquids. Independent of the mounting position it detects reliably with millimetre accuracy the level. The instrument can be used in vessels as empty or full detector, as approved overfill protection, dry run protection or pump protection.
SOR provides a wide variety of measurement and control products including level , temperature, flow, nuclear qualified and pressure products. We serve a host of industries, from oil and gas to nuclear power generation. When the sensing tip is immersed in liqui the infra-red light escapes making the output change state. Sensor is mounted externally.
Principle: All float operated liquid level controls operate on the basic buoyancy principle which states “the buoyancy force action on an object is equal to the mass of liquid displaced by the object. As a result, floats ride on the liquid surface partially submerged and move the same distance the liquid. Applications include, but are not limited to, plugged chute detection, fly ash hopper level , interface, slurries, conductive products and high or low level alarm.
Float switches of the 21st century have come much further in the amount of operations your float switch can perform. Euroswitch is a pioneer in the design and manufacture of Process Automation Instrumentation solutions for Oil and Gas, Power Generation, Nuclear, Military and Rail Industries.
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