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ZHM ST Series

Gear Flow Meters for abrasive, corrosive and less lubricating fluids

The ZHM ST gear flow meter series tungsten carbide sleeve bearing design) are flow meters which are mainly used in lubrication and non-lubrication liquids. They are equallysuitable for filled, viscous and abrasive media.

Only high-grade steels that even withstand corrosive liquids are used in the production of gear flow meters. Combined with the use of tungsten carbide bearings, the ZHM ST guarantees optimum measurement accuracy and a long service life under even the toughest application conditions.


Technical Data

  • Measuring Ranges: 0.005 up to 150 l/min
  • Measuring Accuracy: up to ±0.1 %
  • Repeatability: ±0.05 % (under the same conditions)
  • Linearity: ±0.5 % of actual flow (viscosity ≥ 30 mm²/s)
  • Materials:
    • Housing: as per DIN 1.4305 [AISI 303], 1.4404 [AISI 316L]
    • Gears: as per DIN 1.4122, 1.4501 [AISI F55]
    • Bearing: Tungsten carbide sleeve bearing
    • Seals: FKM, PTFE (others on request)
  • Pressure: up to 420 bar [6,000 psi]
  • Medium Temperature: -40 °C up to +180 °C [-40 °F up to +356 °F] (others on request)


Pickups and Amplifiers


Evaluation Electronics


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