When VEGA recommended the radar level sensor for bulk solids, VEGAPULS 69, which was launched on the market in 2016, the Waldenbuch chocolate maker was amazed by the vastly more accurate measuring results and the distinct echo curves. This non-contact radar sensor operates at the very high frequency of 80 GHz. The direct effect of this higher measuring frequency: Instead of 10°, a DN 80 antenna generates a beam angle of only 3°. As a result, focusing is much tighter and media with poor reflective properties can be detected much more reliably. In addition, the instrument is completely unaffected by buildup, dust or internal vessel installations. Thanks to its particularly good focusing and large dynamic range, VEGAPULS 69 detects poorly reflecting bulk solids reliably even at distances of up to 120 m. Although the 11 meter-high silos at RITTER SPORT are not extremely high, the nominal range of the sensor bespeaks the tremendous performance reserves of this measurement technology. The level measuring process is also extremely fast: The cycle time is less than one second with an accuracy of ±5 mm.

The swivel mount with rinsing air connection also convinced users. The selected flange version is equipped with a swiveling holder of high-quality stainless steel that allows the sensor and antenna to be optimally aligned in a range of ±10°. The user especially benefited from the app developed by VEGA, which can be used to adjust the angle of inclination for optimum installation of the measuring instrument. Only the silo data need to be entered: The app then automatically calculates the correct tilt angle. After that, the smartphone or tablet is simply placed on the instrument. The display allows the user to quickly and easily align the radar sensor by means of the swiveling holder. The supplied rinsing connection clears the antenna of any deposits, although VEGAPULS 69, due to its low sensitivity to buildup, generally delivers reliable measured values even when covered with heavy dust deposits.

RITTER SPORT found the option of parameterizing the sensor with the display and adjustment module PLICSCOM  via Bluetooth particularly clever. PLICSCOM is used for measured value indication, adjustment, and diagnosis directly on the sensor and is the same for all VEGA measuring instruments. The Bluetooth function now makes it possible to adjust the sensor wirelessly from a distance of approx. 25 m. The adjustment functions of the radar sensor can be easily accessed with a smartphone or tablet.

[Via VEGA Americas]

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