Materials Handling
specifically for liquids, while the RM60 is meant for powders or
granulates.It offers: ± 3 mm/± 0.04- in standard accuracy; operability up to a flange temperature of 200°C and 40barg; measuring range of up to 80 metres; and reliable measurement in difficult and agitated process conditions. Based on an FMCW radar signal, the level meter
transmits a high frequency signal which increases linearly during the measurement phase. The signal is emitted, reflected on the measuring surface and received with a time delay, t (t = 2d/c, where d is the distance to the product surface and c is the speed of light in the gas above the product). For further signal processing, the difference is
calculated from the actual transmission frequency and the received frequency and is directly proportional to the distance.. Finally, new from Pepperl + Fuchs is the UC 0GM-
IO series. With these it is possible to adapt the basic parameters without using external tools. The switching distance can be adjusted at the press of a button. The projection cone as well as the function of the switching output can be adapted in further steps. The IO-Link interface and the PACTware parameterisation software together enable optimum adaptation of the sensor to the application. IO-Link also provides an easy way of integrating the sensor into a control system (Fig. 1). ■
Guided radar sensor wins innovation award
V
EGA has won one of the innovation awards at this year’s Powtech mechanical processing technologies and instrumentation exhibition in Nuremberg, Germany. The company’s VEGAFLEX 82 guided radar sensor won in the category for innovation in process and control technology/ automation.
According to VEGA, the decisive factor for the jury’s decision was the
instrument’s ease of use in combination with many new features. First of these is the automatic probe end tracking function that switches on automatically if, for example, the product signal becomes too unreliable. The instrument then outputs the probe end signal, which is stable and exactly proportional to the product level. A second key feature is the automatic false signal suppression, which dynamically adapts the signal processing to changing process conditions such as the formation of heavy build-up on the probe. Thirdly, the sensor was commended for the improvements made to existing features, for example the new quick start function and the memory that stores up to 100,000 readings, 500 events and 10 echo curves indelibly with real-time stamps.
The VEGAFLEX 82 sensor is specifically tailored to the needs of the bulk solids industry. Applications range from large-volume bins to 75 metre-high silos, and from light, fine powders to heavy, coarse gravel. New intelligent algorithms, such as probe end tracking and automatic false signal suppression, increase measurement certainty in these applications. In addition to reliable measured values, the most important demand made of the new sensor is simple setup and commissioning, notes VEGA. ■
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