Hycontrol's MTF Series are simple yet highly effective vibrating level switch devices for liquids. A piezoelectric crystal forces a blade to oscillate at its fundamental frequency (natural resonance). When the blades come into contact with the process medium, this dampens the oscillation of the blade; the electronics sense the change in frequency which causes the unit to switch.
The electronic output options allow the user to switch a load on/off or to interface directly with a PLC. In addition, the units can be programmed to sense high or low levels and failsafe high or low, with adjustable sensitivity to eliminate false switching.
As the damping effect (resistance to vibration) of low viscosity liquids is very low, Hycontrol's MTF devices use two relatively wide blades to sense the presence of liquid levels. These blades can be short in length for minimal intrusion into the vessel or used in pipes.
MTF Series Vibrating Probes are ruggedly-designed switch sensors used to detect liquid levels throughout the process industries and are customisable for many applications, including corrosive, hazardous or hygienic environments. By using the probes as high or low failsafe switches, users can prevent overfilling of tanks and dry run of pumps.
They are suitable for the level detection of free-flowing liquids. In addition, the switches will control filling and emptying functions and generate failsafe alarms to provide either overfill or empty tank protection. There are several probe length options up to 3 metres (10 feet). ATEX options are also available.
Users can directly connect the PNP/NPN transistor output versions to PLC systems or relay units. MTF vibrating forks can fulfil switching tasks of high-current loads with the help of switching isolators. The HYC-MTF-SI-E EExia Intrinsically Safe Switching Isolator is designed to serve the EExia-rated vibrating forks.
