DRS
Page 4
DRS K15/0722
4. Regulation Use
The DRS is to be installed only in the specified applications. Any use of the DRS
sensor which exceeds the manufacturer’s specifications may invalidate the
warranty and any resulting damage is not the responsibility of the manufacturer.
The user assumes all risk for such usage. The application specifications include
the installation, start-up and service requirements specified by the manufacturer.
5. Operating Principle
The DRS flow meter operates on the turbine wheel principle. The liquid first flows
through a laminar flow element that eliminates turbulence and routes the flow
stream into the turbine wheel. The turbine wheel then starts to rotate. This rotary
motion is sensed non-contacting by magnets embedded in the turbine wheel and
converted to a frequency signal. The frequency is proportional to the flow velocity.
Various outputs, such as frequency divider, analogue output or compact
electronics with LED display with limit contacts are available as options. An
integrated temperature sensor for simultaneous measuring of flow rate and
temperature is also available as an additional option. The rotating vane is
sapphire-supported: this ensures a high degree of linearity and long service life.
