Abstract: Disclosed is a distance measuring system for measuring distance of a first transceiver from second transceivers, comprising the first transceiver having a first time zone, a second transceiver having a second time zone, and a control unit having a control-unit time zone. The second transceiver ascertains a time-zone relationship between the second transceiver and the first transceiver, and transmits the time-zone relationship to the control unit. The control unit receives the time-zone relationship, and ascertains, using the received time-zone relationship, a time-zone relationship between the control-unit time zone and the first transceiver. The first transceiver transmits at a defined instant in time or for a defined time period of the first time zone a distance measurement command to the second transceiver. The first transceiver transmits a measurement signal at a further defined instant in time, and the second transceiver switches from an inactive into an active receiving or measuring state.

Abstract: A process for deacidifying a fluid stream containing acid gases as impurities, which comprises, in at least one absorption step at a pressure of from 0.5 to 20 bar, bringing the fluid stream into intimate contact with an absorbent with the proviso that the absorption step, and in the case of a plurality of absorption steps at least one of the absorption steps, is carried out in an inert scrubbing column, the internal surface of which essentially consists of plastic or rubber.