Meter for measuring heavily fluctuating flow rates.

  • Calibratable and exchangeable measuring insert in one unit, suitable for calibration comprising: measuring insert as main meter, switch-over valve, measuring capsule as bypass meter
  • Ideal design of housing and housing cover prevents sedimentation, stagnant water and air pockets
  • Bypass line integrated in housing cover. No risk of sedimentation or corrosion.
  • No measuring errors in the switch-over range
  • Measuring capsule as bypass meter and non-return valve easily replaced on site
  • Good long-term measuring accuracy
  • Complete head unit with counter and sensors can be rotated by 350° for easier reading
  • Main meter and bypass meter are prepared for connection of two reed switch and one opto transmitter
  • In order to secure a safe switch-over the WESAN WPV needs a minimum ingoing pressure of 0.6 bar
  • General
    Medium temperature range°C1 ... 30
    Temperature safety°C1 ... 50
    Ambient operating temperature°C1 ... 55
    Ambient storage temperature°C1 ... 55
    Nominal pressurePNbar161
    Display range0.05 l ... 999,999 m3
    Protection classIP 68 / 652
    Available bypass metersALTAIR MCI / CORONA MC
    1 versions with different nominal pressure on request (see also special versions)
    2 with bypass meter CORONA MC
  • Technical data
    Nominal diameterDNmm5080100
    Permanent flow rateQ3m³/h2563100
    Minimum flow rateQ1l/h253253253
    Transitional flow rateQ2l/h403403403
    Overload flow rateQ4m3/h31.2578.75125
    Starting flow ratel/h232323
    Permanent flow rate bypass meterQ3m³/h444
    Switch-over flow rate risingm³/h2.22.72.4
    Switch-over flow rate fallingm³/h0.91.11.2
    3 with bypass meter ALTAIR MCI
  • Approval
    Nominal diameterDNmm5080100
    MID (DE-16-MI001-PTB002)
    Dynamic range bypass meter CORONA MC (Q3/Q1)R630 H / 250 V1600 H / 630 V2500 H / 1000 V
    Dynamic range bypass meter ALTAIR MCI (Q3/Q1)R100025004000
    Potable waterKTW / W270KTW / W270KTW / W270
  • Dimensions
    Nominal diameterDNmm5080100
    Overall length (DIN 19625)Lmm270300360
    Overall length (DIN ISO 4064)Lmm-300350
    Flange diameterDmm165200220
    Hole circle diameterKmm125160180
    Number of screwholespcs48 / 48
    Screwhole diameterD1mm181818
    Height to remove measuring insertmm245428042804
    DiameterØ Bmm110110110
    Weight of complete meterkg17.425.529
    Weight of measuring insertkg6.39.39.3
    4 with bypass meter CORONA MC
  • Special versions

    - Versions with different nominal pressure on request
    - Special flange holes on request

  • Presure loss graph / Typical error graph
    Pressure loss graphTypical error graph