Turbine Flow Meter Application
Turbine flow meters are used to measure clean, dry gases and liquids such as hydrocarbons, chemicals, gases and vapors, fuels and other types of liquids with lower viscosity, and for applications requiring highly accurate and precise measurements.
These turbine flow meters are mostly used for military applications. They are also used in blending systems in the petroleum industry. They are effective in aerospace and airborne applications for energy fuel and cryogenic (liquid oxygen and nitrogen) flow measurements.
Typically, their applications are found across various industries such as petroleum, automotive, laboratory and water treatment. In some cases, applications are also found in the beverage and chemical industry as well.
A few examples of applications include:
- Particle cleanliness testing
- Water treatment
- Monitoring input flow to an analyzer
- Dispensing chemicals in a laboratory
TURBINE FLOW METER PARTS
Relatively clean liquids, gases, and vapors (some units for gas service are also covered.
3/16 to 24 in. (5 to 610 mm) in flow-through designs.
Generally, linear frequency outputs are provided, but 4- to 20-mA DC can also be obtained through conversion.
Operating Pressure :-
1500 PSIG (10.3 MPa) in standard and 5000 PSIG (34.5 MPa) in special designs.
Usually, one velocity head or about 3 to 5 PSIG (20 to 35 kPa).
Operating Temperature :-
− 58 to 300 ° F ( − 50 to 150 ° C) in standard and − 328 to 840 ° F ( − 200 to 450 ° C) inextended pickup designs.
Materials of Construction :-
Normally, stainless-steel housing and rotor with tungsten carbide sleeve bearings are used, but Hastelloy C or other housing materials and ceramic or PTFE bearings are also available.
10:1 unless limited by use of line-size units or by high process fluid viscosity.
Turbine flow meter price :-
Turbine flow meter with a preamp (but without readout electronics) and with150-lb carbon steel flanges can be estimated as follows (1 in. = 25.4 mm): 0.5 to1.5 in., $2200; 2 to 3 in., $2800; 4 in., $3500; 6 in., $5000; 8 in., $8000; 10 in.,$12,000; 12 in., $16,000; 16 in., $28,000; 18 in., $32,000; 20 in., $50,000; 24 in.,$75,000. Electronic readout devices might include auxiliary, explosion proof power supply, $1200; remote register drive, $3500; frequency-to-analog converter with digital display, $1200; locally mounted, explosion-proof totalizer /flow indicator, $1200. Accessories include flow straighteners, strainers, batch control units,and two-stage shutoff valves.
Turbine Flow Meter Advantages and Disadvantages
Turbine flow meter Advantage :-
- Good accuracy
- Excellent repeatability and range
- Fairly low pressure drop.
- Easy to install and maintain
- Good temperature and pressure ratings
- Can be compensated for viscosity variations
Disadvantage of turbine flow meter :-
- High cost (expensive)
- Limited use for slurry applications
- Problems caused by non-lubricating fluids
Turbine flow meter Installation Procedure :
Before installation, the flow meter should be checked for foreign material and to ensure that the rotor spins freely. All upstream fluid lines should also be cleared of any debris. Also, make sure that fluid flow has been shut off and all pressure in the lines has been released prior to installing the flow meter into an existing system.
The flow meter must be installed with the flow direction arrow pointing in the direction of fluid flow. The flow direction arrow can be found on the side of the flow meter. The flow meter is designed to work in any orientation, but the preferred orientation is to have the meter installed in horizontal piping. The fluid to be measured is recommended to be filtered. The best location for the filter/strainer would be upstream of the flow meter, after any other system components, while maintaining straight piping requirements. The preferred plumbing setup is one containing a bypass line (figure 1).
This allows meter inspection and repair without interrupting flow, as well as the ability
to cycle the fluid through the system filter before diverting to the flow meter. If a bypass line is not used, it is important that all flow control valves be located downstream of the flow meter (figure 2). For optimum flow meter performance a minimum length of upstream and downstream piping is required. It is recommended that a minimum length equal to 10 pipe diameters of straight pipe be installed directly on the upstream side of the flow meter and 5 pipe diameters on the downstream side of the flow meter. This helps to eliminate turbulence in the fluid. Having shorter pipe lengths, other system components and elbows to close to the flow meter may adversely affect the accuracy and repeatability of the flow meter. Piping should be the same size as the meter bore or port size.
Do not locate the flow meter or the connection cable close to electric motors, transformers, sparking devices, high voltage lines or place connecting cable in a conduit with wire supplying power for such devices. These devices can induce false signals in the flow meter coil or cable, causing the meter to read inaccurately
Turbine Flow Meter Calibration :turbine meter consists of a practically friction-free rotor pivoted along the axis of the meter tube and designed in such a way that the rate of rotation of the rotor is proportional to the rate of flow of fluid through the meter. This rotational speed is sensed by means of an electric pick-off coil fitted to the outside of the meter housing. The only moving component in the meter is the rotor, and the only component subject to wear is the rotor bearing assembly. However, with careful choice of materials (e.g., tungsten carbide for bearings) the meter should be capable of operating for up to five years without failure. There are several characteristics of turbine flow meters that make them an excellent choice for some applications. The flow sensing element is very compact and light weight compared to various other technologies. This can be advantageous in applications where space is a premium
Primary Vs. Secondary Standards
Typical Calibration Techniques
Turbine flowmeter Manufacturer
|Turbine Flow meter Manufacturers / Vendors||Country||Website||Phone No.|
|FAURE HERMAN||FRANCE||www.faureherman.com||+33 169827700|
|BOPP & REUTHER MESSTECHNIK GMBH||GERMANY||www.burmt.de||+49 6232657508|
|OIL & GAS SYSTEM LIMITED||UK||www.ogsl.com||+44 1353666640|
|OVAL CORPORATION||JAPAN||www.oval.co.jp||+81 333605121|
|SMITH METER (FMC)||GERMANY||www.fmcmeasurementsolutions.com||+49 41013040|
|SOLARTRON MOBREY||UK||www.solartronmetrology.com||+44 1243833333|