Marcel Schrempp, head of electronics manufacturing at VEGA, is very satisfied with these compact radar sensors. After all, they measure the level in two 200-liter storage drums extremely reliably. These drums contain the liquid components of the potting compound with the illustrious name of 'Sylgard® 527', manufactured by Dow Corning.
It belongs to a group of products that are very difficult to measure with radar technology: electrically non-conductive, with a low dielectric constant of only 2.85. But it is precisely these properties that are needed to ensure that the hardened potting compound injected into the electronics module protects the highly integrated electronics from moisture, leakage currents and voltage flashovers.
In daily operation the sensors, with their small ¾" threaded fitting, measure through a narrow adapter fitting down into the barrel. This special focusing and size is currently offered on the market only by VEGAPULS 64 - thanks to its high transmission frequency of 80 GHz. The measured value is visualized at the control panel of the potting machine, thus informing the operator when he has to schedule a drum change.
This is of course also possible via a smartphone and App utilising new Bluetooth capabilities of the sensors.