Flap Flow Meter
Typ: TSK

Robust, reliable, cost-effective and everything included.

The wafer construction of the device does have a flowoptimised flap and requires therefore only max. 1/3 of the internal cross section. The axles are extremely oversized and therefore do not need any counter bearings.

Depending on the application, the meters can be equipped with plain, ball or spherical bearings and / or with shaft seals.

For use in aggressive liquids Hastelloy as well as various plastic versions, e.g. PTFE or PP are available.

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Flap Flow Meter TSK

All mounting positions possible

Due to the possibility to install the meter in all mounting positions, a retrofitting of the pipe arrangements are not neccessary.

from left to right

TSK Einbausituation horizontal L-R

from top to bottom

TSK Einbausituation vertikal O-U

from right to left

TSK Einbausituation horizontal R-L

from bottom to top

TSK Einbausituation vertikal U-O



Flow metering of liquids in pipelines.
Particularly suitable for flow measurements of e.g. highly polluted waste water.

Special features
  • Clear 90 ° scale
  • Linear characteristic by optimized flap shape.
  • Horizontal and vertical mounting possible.
  • Stainless steel display available.
  • Large spectrum of wetted materials, e.g Hatelloy, PTFE- linings available.
  • Installation in hazardous area possible.
Technical Data


  • Materials:
    • 1.4404 (316 L) / 1.4571 (316 Ti)
    • Steel / Stainless steel,
    • Hastelloy C-22,
    • Polypropylene / Stainless steel
    • Polypropylene / Hastelloy C-22
    • PTFE
  • Process connection: Sandwich acc. EN 1092, ASME B16.5, DIN2512
  • Nominal pressure: PN 16-40, ASME Cl150 / 300
  • Process temperature: -40°C up to +300°C
  • Ambient temperature: -40°C up to +80°C
  • Ingress protection: IP65 (EN60529)
  • Ranges (Water): 0,5 m³/h up to 1.500 m3/h


  • Aluminum (enamel finish)
  • Stainless steel

Output signal:

  • inductive limit switches
  • inductive limit switches
  • (safety function)
  • micro switch (others on request)
  • ES Transmitter
    • Power supply: 14…30 VDC
    • Ausgänge: passiv, galvanisch getrennt
      • Analog: 4…20 mA
      • Binär 1 und 2: Ui=30 V, Ii=20mA, Pi=100 mW
    • Binäreingang: Rücksetzung Zählerstand (nur bei ES mit Zählermodul)
    • Umgebungstemperatur: -40°C bis +70°C
    • Ingress protection: IP 20 (EN60529)
    • Kommunikation
      • HART-Protokoll
      • HART-Protokoll und 2 NAMUR-Kontakten
      • HART-Protokoll und 1 NAMUR-Kontakt / 1Impulsausgang
      • HART-Protokoll und Zählermodul
      • Profibus-PA
      • Foundation Fieldbus

Ambient temperature:

  • -40°C…+80°C (without switch)
  • -40°C…+65°C (with switch)


  • › Liquid: ± 2% of reading±1% of upper range value ± 0,2% with transmitter (ES)

Zertifikate und Zulassung

  • Body:
    • Explosion protection: BVS 03 ATEX H/B 112
    • CE-Marking:
      • 2014/30/EU (EMC)
      • 2014/34/EU (ATEX)
      • 2014/35/EU (LVD)
      • 2014/68/EU (PED)
  • Display:
    • Explosion protection: DMT 00 ATEX E075
    • Ignition category: II 2G EX ia IIC T6
    • CE-Kennzeichen: Ex-Richtlinie 2014/34/EU
  • SIL compatibility
    • IEC 61508-2:2000 und IEC 61508-2:2010
      TSK with 1 or 2 limit switches
      TSK with analog output as well as analog output with switch.