Pressure measurement
21Zio: pressure
transmitter with iO-Link interface
chain and helps to reduce costs. The standardised IO-Link technology
T
commonplace. The pressures in the pipes are generally between -1 and +8 bar. As soon as the emulsion reaches a certain temperature, it is pumped on with a high-pressure pump. To feed the high-pressure pump, there has to be constant pressure in this circulating system. A pressure measurement was therefore installed downstream from the pump to detect filter contamination at an early stage. “In the past, pressure gauges from another
manufacturer were used here, but due to their short lifespan they always caused problems,” explains van den Berg. Other measuring principles, such as flow measurement, did not work properly either. On the one hand, the penetration of moisture caused problems, and on the other, the diaphragms of the sensors would often fail. “However, this measurement is absolutely necessary for the overall process, as it is the only way to monitor the contamination of the filter, which in turn is crucial for the proper functioning of the pump,” adds van den Berg. The new VEGABAR 38 was installed at this
measuring point even before its official market launch in August 2019. It is a universally applicable pressure transmitter with ceramic measuring cell for measurement of gases, vapours and liquids up to 130°C. This very compact sensor enables simple and, at the same time, highly efficient automation. Above all, there are no compromises in terms of safety, hygiene or accuracy, i.e. exactly the requirements that are crucial in food production.
A plus in operAtionAl sAfety The universal connection for hygienic adapters on the new sensor series reduces installation work. Process fittings can be selected as required and adapted to the on-site
Instrumentation Monthly January 2022
requirements. The sensor also has a display with on-site adjustment options and, as a special highlight, a full-colour 360° status display. This is not only for optical reasons: since the colour of the illuminated ring can be freely selected, it can also be adapted to unfavourable lighting conditions. At a glance, the user can see if the measuring process is running, if the sensor is switching, or if there is a possible malfunction in the process. The IO-Link standard protocol ensures
universal and simultaneously simple communication. The instruments thus have a standardised communication platform that enables seamless data transfer and simple integration into the system. The new VEGABAR measuring instrument
series can also be conveniently read out and configured with a smartphone or tablet. Especially in environments with many pipelines and interconnected production processes, where access is difficult and time-consuming, this option considerably simplifies sensor adjustment and operation. This is an aspect that van den Berg appreciates very much in his daily work routine.
simple, reliAble setup And commissioning Since this first deployment was more or less a pilot run, the VEGA team stayed on hand during the installation. “In the future, however, we’ll handle everything ourselves. Thanks to Bluetooth being compatible with the app or PACTware software, the setup and monitoring of the VEGA instruments is very easy,” says van den Berg, who has appreciated the quality and reliability of VEGA instruments as well as VEGA service for many years.
VEGA
www.vega.com/uk The sensors can be conveniently
parameterised via a computer connected to the network. Any malfunctions are detected at an early stage via the integrated diagnostic function and can be responded to immediately. If the sensor is replaced, the master detects the device and automatically writes the predefined parameters into the sensor. This significantly reduces machine downtime, personnel costs and susceptibility to errors.
KELLER
keller-druck.com 49
gives the user uniform specifications from the cabling to the protocol and still offers compatibility with common interfaces in automation technology. This noticeably reduces the susceptibility to faults caused by incorrect wiring or similar errors, and BUS-specific definitions or parameterisations are not necessary.
he new 21Zio pressure transmitter series from KELLER brings a significant increase of flexibility and efficiency in the measurement
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