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Cole Parmer UK offer an extensive range of turbine flow meters for both liquid and gas applications. There are many types of turbine flow meters, some offer low cost water meter solutions with accuracy typically around ±3% full scale, whilst other turbine flow meters offer high accuracy of ±1% or better. Cole-Parmer offers turbine flow meters for measuring liquid flow from 13 ml/min to over 9,000 LPM and for gas flow from 20 ml/min to over 1,900 m3/hour.
Cole-Parmer’s turbine flow meters are available in a wide range of materials including low cost nylon and aluminium bodies to specialist options such as PVDF or stainless steel for more aggressive, higher temperature applications. Many of our turbine flow meters come with a wide range of digital displays and controllers including options for PC, PLC control or batch dispensing operation.
To find the right flow meter for your application use Cole-Parmer’s on-line flow meter quick search. Alternatively contact our Application Specialists for free technical support and help let us bring over 50 years of flow control experience to help solve your application needs.
Key Points for turbine flow meters
- Figure 1
 Many designs exist for turbine flow meters, but most are a variation on the same theme. As fluid flows through the meter, a turbine rotates at a speed that is proportional to the flow rate (Figure 1). Signal generators, usually located within the rotor itself, provide magnetic pulses that are electronically sensed through a pickup coil (the yellow pickup coil shown in Figure 1) and calibrated to read flow units.
- Typical accuracy for a turbine flow meter is ±1% full scale
- A turbine flow meter normally has a turn down ratio in the region of 10:1
- A turbine flow meter normally requires a straight pipe run with a minimum length of ten times the diameter of the pipe before the flow meters inlet and five times the diameter of the pipe after the flow meters outlet
Advantages for turbine flow meters
- High accuracy and good repeatability
- Fast response time – typically a few milliseconds
- Wide flow range options for both liquids and gases
- Good flexibility with associated digital readout devices including flow control options for both PC and PLC’s
Disadvantages for turbine flow meters
- Require upstream straightener and filter for best results
- May over-read in pulsating flows
- Turbine flow meters for liquid can require regular re-calibration due to bearing wear
- Particulates can cause line blockage
Typical Application for turbine flow meters
- Pilot plants
- Research and development facilities
- Cooling water monitoring
- Inventory control metering applications
- Test stands
- Water consumption
- Makeup water
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