McCrometer Propeller Flowmeter

Prop FlowmeterMcCrometer has set the standard for liquid flow measurement performance, ease-of-use and value in the agricultural and turf markets since 1955. Its leading-edge propeller flow meters offer economical and versatile flow measurement. The Mc Propeller is especially suited to dirty water flows, municipal and other high-volume water applications.

Unlike traditional propeller meters, the Mc Propeller uses a flexible drive-train and sealed ball bearings. Its unique design makes it easy to service in the field and requires no external power or batteries. The Mc Propeller is designed to comply with AWWA C704-08. Standard features include an instantaneous flow rate indicator and six-digit totalizer.

There are no tight tolerances in the Mc Propeller. It handles solids suspended in water without clogging. With its high accuracy, this flow meter is also a water management tool, helping to reduce water costs, preventing over-irrigation and reducing leaching of chemicals and fertilizers into the ground.

Key features include:
  • Best-selling irrigation meter in the US
  • Clean and dirty flows
  • Easy to install and operate
  • Easy to service in the field
  • Accuracy of +/-2% of reading
  • Repeatability of +/-0.25%
  • Self-cleaning design
  • Instantaneous flow rate
  • Indicator-totalizer on every model
  • Turndown: up to 15:1
Click to openHow It Works:
  • The Mc Propeller consists of a rotating device, a helical-shaped impeller, positioned in the flow stream.
  • When fluid passes through the meter, it contacts the impeller causing it to spin.
  • The impeller’s rotational velocity is directly proportional to the velocity of the flow.
  • The rotation is translated through a magnetic coupling and flexible drive system to the register, which calculates the flow rate by multiplying the flow velocity with the cross–sectional area of the meter tube.
Click to openSpecifications:

The Mc Propeller is a uniquely-designed propeller meter good for both clean and dirty water flows, and is the top-selling flow meter in the US for agriculture and turf irrigation applications.

Specifications and design features
  • Accuracy: +/-2%
  • Repeatability: +/-0.25%
  • Turndown: up to 15:1
  • Very low permanent headloss
  • Mechanical instantaneous flowrate indicator and totalizer standard
  • Optional electronic digital register available
  • Unique magnetic coupling system, isolates register from flow
  • Needs 5-10 diameters upstream, 1-2 diameter downstream
  • Straightening veins to generate optimum flow profiles
  • Epoxy-coated carbon steel body; all stainless available
  • Pre-calibrated, corrosion-resistant polymer impeller
  • AWWA approved for cold water use
  • Register options: forward/reverse flow; test hand/index wheel;anti-reverse totalizer; custom scale; extended digit totalizer
  • Impeller options: high temperature resistant; acid and caustic resistant
  • Line sizes: from 2" to 96"
Click to openParameters

The following flow and installation parameters will help you decide whether theMcPropeller is suited to your specific flow measurement application.

Flow Parameters:
Types of flow measured Water and liquids with some suspended solids.
Flow range 1 - 15 FPS typical
Operating temperature 160° F maximum continuous operation
Operating pressure Up to 300 psi
Head loss Very low
Installation Parameters:
Pipeline Sizes 2 - 96"
End fittings Threaded; flanged; groved-end; weld-in; more options on request
Mounting Horizontally or vertically, as long as a full pipeline is assured
Upstream / downstream pipe runs 5-10 diameters upstream; 1-2 diameters downstream
Meter output Instantaneous flow indicator and total flow. Optional signal outputs 4-20mV, 1-5V, dry contact relay, digital 0-12 pulse, open-collector, dual forward / reverse 4-20mA