Flow Measurement Technical Tips
Flow Range Affect on Cost and Performance
When specifying the flow range for your turbine flowmeter application, a more detailed description may reduce the cost of the calibration and/or increase the accuracy of the measurement. In a flow application, the expected flow range is the first thing considered to "size" the meter.
Importance of Fluid Properties
When Identifying the fluid for your turbine flowmeter application, it's very important to be a specific as possible. When specifying a flowmeter, one of the most basic considerations is the type of fluid being measured.
Operating Temperature Range vs. Turbine Meter Costs
When specifying the temperature range for your precision turbine flowmeter application, a more detailed description may reduce the cost of the meter and/or its calibration.
Passivation of Austenitic Stainless Steel
Passivation is required to maximize the natural corrosion resistance of the stainless steel. This is critical when turbine flowmeters are used in water or other corrosive fluid applications.
Understanding Helical Rotor Performance
There are many reasons for selecting helical rotors over that of flat-bladed rotors. The helical blade transfers energy more efficiently from the flow stream to the rotor, producing a faster speed of response to flow changes.
Flow Measurement White Papers
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Accurate Presentation of Turbine Flow Meter Calibration Data
Turbine Flowmeter data can be presented in several different formats. Some formats provide a better view or resolution of the device accuracy while others actually allow improved accuracy of the measurement. Even the popular Universal Viscosity Curve (UVC) is not a true representation of the actual flow through the turbine meter.
Determining Factors for Turbine Flowmeter Bearing Life
In the field of flow measurement, several important factors can cause accuracy concerns leading to premature flowmeter calibrations or bearing replacement. Precision turbine meter users need to understand the proper techniques to ensure their instrument will maintain its calibration over the intended period of use.
Helical Rotors Extend Linear Range of Turbine Flow Meters
Helical rotor turbine flow meters outperform flat-bladed rotors by extending the linear range of the flow meter. Manufacturers who produce flat-bladed rotors do so for economic reasons, at the sacrifice of performance. In addition, the helical blade profile transfers energy more efficiently, reducing bearing wear and pressure drop and their associated cost.
Latest Advancements in Flow Computer Technology
End users can enhance the performance of their turbine flowmeter by using an integral flow computer. There are many reasons to use an integral flow computer in a process application or test system: however, the insurance of proper signal processing, tracking fluid viscosity and extending the linear capability of the flowmeter is usually at the top of the list. There are many additional benefits sometimes not considered when thinking about an integral flow computer.
Single Fluid Universal Viscosity Curve: A Concept Not Always Used or Understood by Calibration Laboratories
Are you or your calibration laboratory performing unnecessary calibrations on your turbine flow meters? You may be if you don’t understand the concept of the Single Fluid Universal Viscosity Curve.
Flowmetering Articles
Coming soon.
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