![]() ![]() Wetted parts, the fork and process connection, are 316L stainless steel offering high corrosion resistance. When included in a fail-safe circuit this device provides an extra degree of fail safety improving system integrity. VQ is a compact level sensor ideal for integration into machinery. Upon coming in contact with solids, amplitude of oscillation goes down, the same is used as a switching parameter for detecting point level for solids. Fig. It forwards the signal in the form of pulse frequency modulation continuously to computer unit for density calculation. The vibration of the tuning fork is sensed by a pickup piezoelectric element. The tuning fork is kept vibrating at its resonant frequency by a piezoelectric device. The tuning fork is excited by piezoelectric method. The resonance of the fork is caused by the piezoelectric crystal. Tuning fork forms the sensing part of vibrating point level sensors. The electrically simulated vibration fork vibrated at a particular frequency. The turning fork is installed in the tank at a level which the level is to be sensed. This makes the sensors especially robust and reliable. Working: The vibration switch consists of an oscillating or tuning fork which is made to resonate in the air. ![]() The electronic ifm sensors can do without any mechanical parts or floats. Build-up and wear often lead to failures, in particular if mechanical switches are in contact with the medium. The fact that this device is vibrating normally when dry makes it ideal for use in high level detection applications.Īny change in the sensor signal, however caused, will result in a status change of the switch and an alarm may be activated. For non-contact level detection, photoelectric distance sensors or 3D camera systems can be used. The LED gives an indication that the switch is functioning correctly and gives a visual indication of the state of the relay.Ī fail-safe switch on the circuit board is provided for the user to select either "make" when dry - the normal condition - or "make" when wet, as would be selected for low level duties. The LED will flash approximately once per second when the switch is "off' and will remain constantly lit when the switch is "on". The Series 100 includes a status indicating LED which may be viewed through a lens in the NEMA 4X enclosure cover or with the cover removed, on the explosion proof model. applications - drawing 16.8 MA when "on" and 6.0 MA when "off'. This option is similar to the DIN 19234 (NAMUR) Switching Levels except it is not suitable for I.S. The new option "W" provides a unique step change output for 2-wire 24VDC applications. The scientific developments include the deposition of polymer, monolayer and antibody coatings, which are applied to the active surface of the sensors. When relay output is required a SPDT dry contact output version is available with selectable high or low level fail-safe. The Tuning Fork Sensors are based on the principle of dual tuning forks, which vibrate at low frequencies. When specifying the standard 2-wire output version, the switch may also be interfaced directly to a 3 wire 24VDC PLC using a third PLC terminal on the circuit board. The solid state output stage acts as a simple SPST switch, operated by liquid presence. This shift is being monitored continuously and once a present threshold is exceeded, the output changes status.Ī standard two core cable is used to connect the switch in series with the load. SCX1 Vibrating Probe Level Switch is a vibrating tuning fork point level sensor that utilizes piezoelectric crystal and solid state electronics technology. As the tuning fork is covered by a liquid or slurry, a corresponding shift occurs in the vibrating frequency of the tuning fork. A piezoelectric crystal system is used to create a 1200 Hz vibration in the tuning fork. The Series 100 has a tuning fork style probe which vibrates at its natural frequency when in air. The Magne-Sonic Series 100 is a two wire device which may be installed in any position in a pipe or vessel to detect the presence of a liquid. Pressure Range: 150 psi (10 bar) 25☌ (76☏) derated 1.667 psi (0.113 bar) per ☌ above 25☌ (76☏)(br) Probe Material: Ryton®Ĭable Type: 3 m (10'), 5-wire, shield and PP jacketĭimensions: 114 x 27 mm (4.5 x 1.Series 100 Vibrating Tuning Fork Liquid Level Switch ![]() Switch Output: SPST Selectable NO or NC states Factory calibration ensures accuracy over a wide range of liquids, including lubricating oils and hydraulic fluids. The tuning fork sensor is often used in conditions where there may be frequent composition changes in the liquid. ![]() As the tuning fork is progressively covered by a liquid, a shift in frequency occurs which activates the relay output. The LTU-101A-R consists of a sensor with dual tuning forks which are vibrated at a high frequency. ![]()
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