Abstract: A water meter has a measurement insert disposed in a meter housing, a measurement display, an intake connection and a discharge connection. An impeller is disposed on a shaft in a measurement insert housing, also referred to as impeller bowl. A first shaft end of the shaft interacts with the measurement display. The meter housing has, on a side facing away from the first shaft end, referred to as a lower side below, recesses or openings for receiving fasteners for fastening a cover, and a calibrating device for adjusting the measurement display. The calibrating device is inserted into at least one of the openings that can be closed by the cover.

Abstract: A water meter has a measurement insert disposed in a meter housing, a measurement display, an intake connection and a discharge connection. An impeller is disposed on a shaft in a measurement insert housing, and a first shaft end of the shaft interacts with the measurement display. A supporting part is disposed between the meter housing and the measurement insert housing. Because of the supporting part, forces, acting in the axial direction of a second shaft end of the shaft through the measurement insert housing, can be absorbed and the forces can be conducted into the meter housing.

Abstract: A device and a method for non-contacting sensing of the rotational state of a rotor (10). The rotor has a surface divided into an electrically conductive part (1e) and a nonconductive part (1f). Three electric coils (2a, 2b, 2c) are each included in a respective parallel resonant circuit and are applied close to and with their longitudinal axes oriented towards the rotational path of the electrically conductive part of the rotor. The resonant oscillations are damped depending on the rotational position of the rotor. The rotational state is evaluated with an electronic circuit. In a liquid-flow meter, the coils may be applied in the dry part of the meter.