Turbine meters TRZ and SM-RI as well as quantometers Q, Q75 and QA are flow meters which display the volume flowing through the device in actual cubic metres. The incoming gas is accelerated through the inlet body and strikes the blades of the turbine wheel. The revolutions of the turbine wheel are transferred to an 8-digit roller index via a multistage gear.
Turbine meters are used for official metering and billing purposes (custody transfer). From a metering point of view and in terms of materials, TRZ and SM-RI turbine meters are suitable for use with combustible gases in the field of energy supply as well as with a variety of technical gases in industrial applications. All turbine meters are EU approved, DVGW registered and certified to PED.

Quantometers are turbine meters of short overall length. They are ideally used in non-custody transfer applications.