Turbine flow meters are used to measure the flow rate of liquids by checking the rotation speed of the meter's blades. The meter is usually submerged in a pipe or other water-flow area, and rotates as the water passes through it. It then sends the measurements as a signal to an electronic remote reader or to a meter that's physically connected above ground.

Because a turbine flow meter requires the diversion of water flow to install, it's important to select a durable model that can survive sustained use. Smooth bearings can help prevent the turbine from coming apart in the water after extended use. Turbine flow meters are a very reliable measurement device with a moderate installation cost. However, before purchasing a turbine flow meter, consider the following:

1. Measure the viscosity of the liquid you will measure, as this will affect the measurements of your meter.

2. Turbine flow meters require at least 10 pipe diameters of straight pipe on the inlet to function correctly.

3. The installation of a turbine flow meter creates a small to medium pressure drop in the water flow, depending on the size of the model and the traveling speed of the liquid.

Action Steps
The best contacts and resources to help you get it done

Buy a turbine flow meter with a remote readout for variable conditions

For some applications, it's impractical to check flow conditions from the site of the installation. Remote readouts allow you to monitor the liquid's conditions from a nearby control area or facility. This type of turbine flow meter works best when the flow must be constantly monitored or controlled.

I recommend: Request a quote on a turbine flow meter with a remote from Hoffer Flow Controls, or buy a model with infrared readout from DigiFlow Systems.

Purchase turbine flow meters with mounted readouts for low-maintenance installations

This type of turbine flow meter works best when water-flow does not need to be continuously monitored. A mounted readout is usually placed above the installation site so the flow control can be checked if there are problems. This type of setup can also work with more intensive monitoring if the installation site is directly below the primary work area.

I recommend: Check out Hedland's selection of turbine flow meters with optional mounted readouts, or check out Emerson's line of turbine flow meters.

Find a company to design a custom turbine flow meter for your business's needs

If your company has unusual needs, or plans to try something unique, it's best to let a professional custom design a turbine flow meter for you. This ensures that a poorly fitted or ill-adapted flow meter doesn't break or jam later on, saving you time, money and frustration.

I recommend: Request a quote on a custom turbine flow meter from the W. A. Kates Company. Or contact Actaris to request information on its custom calibrated flow meters.

Tips & Tactics

Helpful advice for making the most of this Guide

• •  Always consider whether your turbine flow meter can function under the minimum and maximum pressure, temperature and other characteristics of your liquid. Some liquids may need a corrosion or heat resistant turbine flow meter.