SP23 Flow meter

SP23 Flow meter

SP23 Flow meter


Flow meters of the SP23 range are used for checking the amount of fluid used to refill the barrier fluid circuit in closed systems (e.g. SPN1000/3000). The indicated volume equals the amount lost from the circuit through leakage.


  • For operating pressures of up to 40 bar or 100 bar as standard
  • Local indicator with MIN or MAX contacts
  • Available with integrated needle valve
  • Parts in contact with the medium are made of 1.4571: excellent media resistance for aggressive liquids
  • Wide range of applications throughout the processing industry

Product variants

Designation SP23-26 SP23-41 SP23-42 SP23-46
Measuring range
0.1 ... 1 l/h*)
0.4 ... 4 l/h*)
Proximity contact acc. to NAMUR
MAX flow
Harzardous duty approval
ATEX Ex ia
Control valve
Needle valve
Allowable pressure
40 bar (580 PSI)
100 bar (1,450 PSI)
Allowable temperature (medium)
150 °C (302 °F)
Wetted parts 1.4571 1.4571 1.4571 1.4571

Other versions on request.

*) With water as buffer fluid, other media on request.

Similar products

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Bourdon pressure gauges of the SP23 range are used for visual monitoring of the operating pressure.

SP23 Temperature gauge

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SPI Measuring unit

The measuring unit of the SPI range is used for visual monitoring of the operating temperature and the operating pressure. The measuring unit consists of a pressure gauge (NG 100) with a gauge shut-off valve in accordance with DIN 16270, a bi-metallic thermometer with protective sleeve, and a connector. The SPI is suitable for deployment with the TS2000, TS4000, TS5000 and DRU2063.

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