Apr 01 2021 Read 27 Times As one of the first manufacturers anywhere in the world to recognise the potential offered by combining near-field communication with industrial pressure transmitters, KELLER AG für Druckmesstechnik has now launched two new series: the 21 D RFID and the 21 DC RFID. The passive pressure transponders in the Series 21 D RFID are autonomous in terms of their energy requirements, allowing them to be used indefinitely without maintenance, while the main attraction of the Series 21 DC RFID is its integrated data logger, which runs on a special long-life battery. With both products, the energy required to transmit measurements is provided wirelessly via the RFID interface. Potential applications for these hermetically sealed pressure transponders include mobile systems, large-scale facilities and as replacements for conventional pressure gauges with dials.