RZ Positive displacement flowmeter

For beverage syrups, clear juices and other products

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The RZ series positive displacement flowmeter is the solution to applications requiring precision flow measurement from a sanitary design. With an accuracy of ± 0.15% over the operational rate, the RZ is an excellent choice for beverage syrups, clear juices and other products which flow through process lines which are cleaned in place. Designed for use in food processing applications, the RZ is capable of measuring a wide range of products from water to viscous sugars. The RZ is comprised of a single moving part design, measurement is based on the principle of a chamber and rotating piston which create several internal chambers which are alternately filling and emptying as the piston moves in a circular path within the chamber. The electronic sensing of the pistons position and movement provides the information necessary to measure the exact volume of liquid which has passed through the flowmeter. Available in 2″ and 3″ sizes to fit a wide range of applications, and flow ranges, the RZ can provide the performance necessary to satisfy demanding food process applications.


  • ± 0.15% accuracy over flow range
  • One moving part eliminates regular maintenance needs


  • Water
  • Corn Syrup
  • High Fructose Corn Syrup
  • Molasses
  • Vegetable/Edible Oils
  • Clear Juices
Specifications/Spare Parts
Part No.
Product Code
±0.15% Over Entire Flow Range
Operating Range
20 - 120 gpm (77 - 455 lpm)
Temperature Limits
32-200°F (0-93°C) max
Pressure Range
0-85 psig (1-5.9 bar)
Max. Pressure Drop
45 psi (3.1 bar)
Supply Voltage
12 - 24 VDC, 1.5 Watts
Unscaled, Pulsed Output -11-22 VDC, Maximum 62 hz with standard probe
Electrical Connection
Cannon watertight connector
Process Connection
2” ASME sanitary clamp
Housing Materials and Finishes
316L SS
Wetted Parts Materials and Finishes
Piston Polysufone, Carbon, 316SS
51 lb (23 kg)
1 year

Spare Parts

RZ32-5 2" Face Plate O-Ring (85 10 Or Before 1986)
RZ33-2 3" Cip-O-Plast Piston
RZ33-5 3" Face Plate O-Ring (95 11 And O Series)
RZ33-92-24V 3" Transducer - 24Vdc
RZ33-92-MPW-24V 3" Transducer - Duty Cycle 24V
SM133-11TEF 3" Face Plate Teflon Ring (Pre 1992)
O-265 2" Face Plate O-Ring (85 11 And O Series)
RZ32-2 2" Cip-O-Plast Piston
RZ32-92-24V 2" Transducer - 24Vdc
RZ32-92-MPW-24V 2" Transducer - Duty Cycle 24V

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“Industrial Technical Services is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels”.


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