The EK280 can be equipped with a GSM / GPRS modem and a power supply unit (Zone 2) and thus covers the requirements for volume conversion, data logging and remote data transfer in a single device. In addition, the device features other digital inputs and allows for connection of a second pressure and/or temperature sensor. Status signals and measurements (e.g. door contact, SSV, inlet pressure, etc.) of a gas measurement and control system can thus be recorded and transferred to remote control or SCADA systems for monitoring purposes via a separate interface.