RUBIN WPDK/WSDK
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RUBIN cold water meters operate according to the flowrate measuring principle using a Woltmann turbine and are designedfor high-volume water measurement.The complete modular system covers a wide measuring range in all areas of water sup- ply management. > High overload capacity ՕSymmetrical control for high accuracy in both direc-tions (optional)Register unit to IP 68 (protected against continuous immersion)ՕThe hydrodynamic counter-pressure generated by thespecial geometry of the WPDK helps to ensure a flo- ating,low-friction turbine bearing The register unit can be rotated through 360հto pro-vide the best reading positionOptional local and/or remote display ՕThe hermetically encapsulated roller counter can be retrofitted with up to 3 pulsers without destroying sealsThe measuring units can be removed and certified > VD1-301e04.2006 size="-1">

The Reed and optoelectric pulsers can be retrofitted without destroying the seals.The Reed DS 01 pulser can be installed in two posi-tions with different pulse values as indicated on the dial.Smaller pulse values are to be stated when ordering special versions of the RD(on request). > Switch type Reed contact tube protected with an inert gas filling; plug-in designContact protection ՕRD 01:with protective resistor (50 > +/-+/-5.65078.4fRi50Ohm Ω )and varistorRD 011:with protective resistor (100 բĦ )RD 011:mit Schutzwiderstand 100 բĦ Switch voltage RD 01:max.48 VAC or DC ՕRD 011:max.125...

The choice of the nominal meter size should not automatically be based on the nominal size of the pipe.The decisive factor is the hig-hest flowrate that occurs continuously in the pipe - this determines the nominal flowrate Qn of the meter. > AM066243a The flow profile is modified by the pipe bend or pipe reducers to such an extent that it alters the incoming flow to the meter turbine.As aresult,measuring accuracy is impaired which can be prevented by suitable constructural precautions.For these purposes,flow straigh-teners which regularize the profile can be used,these being installed...

Reference conditions:Medium = water,temperature = 20 C Qmin > +5%+2%0%Ж2%5% +֖ QtQminQnQmax Measurement error limit Typical errorcharacteristic ≤ Q< Qtlower load range Qt ≤ Q ≤ Qmaxupper load range 9 >