Level sensors have PTFE coating for increased durability

The company's patented electron beam process deposits a PTFE layer between 0.5 and 1microns thick, which it says has no adverse performance influence on the stainless steel membrane and thin film semiconductor diaphragm technology used for the PS1. In addition, the smooth plastic coating is designed to improve the contamination resistance of the IP68 rated sensor and significantly extend the cleaning intervals required for maintenance. The PS1 series has an accuracy class of 0.5% FS and covers measurement ranges from 0.1 to 25bar with standard output signals of 4 to 20 mA, and 3wire 0 to 10V and 0 to 5V. From an operating voltage between 12 and 30VDC and a media temperature range of -40 to 85°C, the sensor equally suits level and point measurement in waterways as well as tanks and vats. Where more aggressive media is used, the PTFE option offers additional protection and a new sealing system between the pressure compensated power cable and housing has been implemented to further improve performance. The series is available now from Variohm EuroSensor.