Lutz flow meters are well tried and recognised in numerous applications by precise measuring results,
high reliability and user-friendly operation. They are
particularly suited for the high demands of industrial
measurement of flow volumes and Lutz therefore has
consequently expanded the existing product range.

The new flow meter series HDO measures besides
aqueous and lightly viscous fluids also highly viscous
fluids up to max. 500.000 mPas precisely and reliable -
even high flow volumes up to 350 l/min, pressures up
to 55 bar and temperatures up to 120° are possible.
A significant feature of the HDO series is the measuring system with the proven oval gear principle.

This technique guarantees precise measuring accuracy (+/- 0,5% of the measured value) and a very good
repeatability (0,03%). The measuring results are by and large independant from the viscosity of the liquid being
measured and a re-calibration due to changing features of the liquids and/or application conditions in the majority
of cases is not required. Disturbances in the flow profile like vortexes and turbulences in the pipe line do not
negatively affect the measuring process.

Even non conductive liquids do not create a problem as the flow meter directly counts the displaced volume. Few
components and wearing parts as well as low frictional resistance in the measuring mechanics emphasize the
high reliability and operational safety of the plant. For this reason, the HDO flow meters are employed in very
different fields of industry. Typical area of applications are e.g. chemical/petrochemical industry, paints and
lacquers, chemicals- and mineral oils, plant construction. The flow meters HDO are available in nominal widths
DN 25, 40 and 50, alternatively with thread- or flange connections. Depending on the composition and character
of the medium the housing parts and measuring wheels coming into contact with the liquid are made from
aluminium, stainless steel or PPS (polyphenylenesulfide).