DRZ - Rotary Piston Flow Meter

Brand: KOBOLD Instruments, Inc

The KOBOLD DRZ rotary piston positive-displacement flow meter combines economy with high performance.

This metal flow meter is designed to measure any clean liquid with lubricating properties and a viscosity ranging from 5 to 100 centistokes.

The unique design uses a single piston rotating on a camshaft to meter a very precise volume of liquid with each rotation of the piston.

Piston rotation is detected by a Hall Effect sensor, and the signal is processed by electronics into a blind pulse output (PNP or NPN based on model ordered) or a full-featured controller with flow rate indication, analog output and switches.

The rugged, economical brass body provides a pressure rating to 580 PSIG. The DRZ has a low pressure drop of 20 PSI maximum.
  • For Low to Medium Viscosity Lubricating Liquids
  • Accurate Measurements for Clean Lubricating Media
  • Pulse or 4-20 mA Output or Optional Digital Flowrate Indicators
  • Economical Brass Construction


Measuring Range

  • 1.6 to 110 GPH
  • 6 to 420 L/h


  • ± 1.0 % of Reading


  • ± 0.2 % of Reading


  • 1/8” NPT
  • 1/4” NPT
  • G 1/8
  • G 1/4

Viscosity Range

  • 5 to 100 cSt

Maximum Pressure

  • 580 psig

Maximum Media Temperature

  • 176° F

Media Category

  • Liquid


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