For this purpose, the level signals should be read in, standardized and made available for visualisation as well as further processing. The functional solution found was to be standardized and transferred to other Brenntag locations. This would require a partnership-based collaboration with suppliers of measurement and automation technology and a joint approach to the solution. In other words, the chemistry just had to be right. Brenntag found the ideal partner in gefeba Engineering, the specialist for automation technology and infrastructure and in VEGA, the metrology, signal transmission and visualisation expert.
With all the prerequisites in place, implementation of the planned measures could begin. At one location, the acid storage facility, which encompasses ten new 30 m³ PE tanks for sulphuric, hydrochloric and acetic acid in different concentrations, was equipped with proven VEGASON 61 ultrasonic sensors for level measurement. A VEGASCAN 693 gateway supplies the sensors in HART multidrop mode and provides the signals for the company network via the Ethernet interface. The ten existing underground solvent tanks with a total of 30 chambers are gradually being retrofitted with modern measurement technology. Existing sensors based on older generation guided radar have been replaced by VEGAPULS 64
radar sensors for level measurement. The sensors have an intrinsically safe supply via VEGAMET 624 controllers.
These provide switching contacts for a pre-alarm and an end shut-off of the safety valve at maximum filling. Here, too, the level values are delivered to the company network via the Ethernet interface.