VRF™-series

The VRF™-Series is well suited for severe applications including high temperatures, high pressures and corrosives, e. g. coal, flyash, flour, sugar, grains, pharmaceuticals, plastics, asphalts, sawdust, concrete.

The VRF™ Series uses Variable Radio Frequency to detect the presence or absence of material in a vessel. When the VRF™ is installed the sensor recognises the characteristics of the air (empty) and calibrates propriately (EZ-Cal® II function). As soon as the bulk material physically reaches the sensor, the VRF™ detects the change and recalibrates. User’s advantage: a specially trained and expensive technician is not required, anyone can carry out the adjustments.

The VRF™-series (VRF™-1000 and VRF™ -2000) are supplied with the Pro-Guard feature. This prevents incorrect readings due to deposit build-up on the sensor.

A micro processor digitally analyses the voltage determined by the sensor and the current values to characterise the complex impedance seen by the probe. The digital signal-processor permanently analyses the probes’ resistance.

With the VRF™-2000 the user is informed about the calibration status and material levels via LED’s. The VRF™-1000 has all of the features of the 2000 but can be used for applications where visible contact is not necessary or possible. Both, the VRF™-1000 and VRF™-2000 are available as remotely controlled models for use in areas with high temperatures or vibrating environments, or a cable model for use in very high vessels.

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