Kem Kupper GFM High Resolution Gear Flow Meter

The special design of the GFM High Resolution series flow meters is tailored for measuring and dosing extremely small quantities. They are ideal as meters in test stands and for applications where great flexibility with optimum measuring performance is in demand. Lubricating as well as non-lubricating, abrasive, aggressive and filled media across a very broad viscosity range can be measured precisely and reliably.

The innovative GFM High Resolution flow meters combine the absolute measuring precision of proven gear flow meters with exceptionally high resolution, compact, integrated electronics. The precise mechanical measuring element supports the most dynamic possible measuring range with the lowest possible activation point.

Extraordinarily broad measuring ranges are realized and cascading fades into the background. The GFM High Resolution is therefore suitable for cost-reducing system designs and minimizes replacement part inventories.

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

Stainless steel bearings guarantee smooth start-up behavior, even with very small volume flows and low-viscosity media. The combination of various gear dimensions and modules allows a wide range of sizes that can cover a huge measuring range



  • Test stand applications
  • Dosing of extremely small quantities
  • Consumption monitoring and additive dosing
  • Coating and PU applications
  • Monitoring of dosing pumps and operating materials


  • Adhesives and sealants
  • Paints and coatings
  • Additives and catalysts
  • Lubricants and preservatives
  • Fuels and operating fluids


  • Measuring range up to 1:1000
  • Extreme resolution up to 1,000,000 Imp/l
  • Compact, integrated electronics
  • Output signal for flow and direction
  • High measuring accuracy up to ±0.1 %1) Exceptional repeatability of ±0.05 %
  • Short response times Pressure-resistant up to 250 bar [3,625 psi]
  • Medium temperature up to 125 °C [257 °F]
  • Explosion protection for Zone 2


Technical Data

Measuring AccuracyUp to ±0.1 %3

±0.05 % (under the same conditions)

Deviating in the extended measuring range


Housing: as per DIN 1.4305 [AISI 303], 1.4404 [AISI 316L], Aluminum (EN 7075)

Gears: as per DIN 1.4122, 1.4501 [AISI F55]

Bearing/Axis: Tungsten carbide or stainless steel ball bearing

Seals: FKM, PTFE

DimensionsSee dimensional drawing (page 5 of datasheet)

Technical Data – Electronics

Electrical OutputPush-Pull, I max 20 mA
Supply Voltage7 - 30 V DC
Quiescent Current< 20 mA
Ambient Temperature-40 °C up to +70 °C [-40 °F up to +158 °F]
Medium Temperature

non Ex: -40 °C up to +125 °C [-40 °F up to +257 °F]

Ex, Zone 2: -40 °C up to +70 °C [-40 °F up to +158 °F]

Ingress ProtectionIP66
Ex ProtectionZone 2: II 3G Ex nA IIC T4 Gc
Electrical Connection

5-pin plug M12; A coded

1 = +UB

2 = signal for direction

3 = 0 V

4 = frequency signal for flow

5 = n.c.

Download Datasheet: GFM High Resolution Kem Kupper Gear Flow Meter

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