what is a flow meter?
Flow meters are used to identify the volume of or mass of a gas or liquid. Flow meters are
known by a variety of names depending on the industry, including flow gauge,
flow indicator, liquid metre, flow rate sensor, and so on. They all, however,
measure flow. Flow meters can be used to measure open channels such as rivers
or streams. Alternatively, the greatest utility from a flow meters and the
widest range of flow meters focus on measuring gases and liquids in a pipe. The
advantage of using best flow meters help in improving the precision, accuracy,
and resolution of fluid measurement.
There
are various technologies and techniques help in measuring flow, and it is
always complex to determine the best suited to a given application. Some flow
meters measure velocity or mass flow rate, while others measure volumetric flow
rate, and still others infer volumetric flow rate based on differential area, pressure,
or force. As a result, factors such as media density, temperature, viscosity, pressure,
or conductivity may affect each technology differently or not at all.
What type of flow
meter is best?
There are no "universal" flow meters
that can be used in all applications. Choosing the right technology for your
application necessitates the creation of a flow specification that details how
the meter will be used. Each flow meters type usually has trade-offs, so
knowing the critical specifications is essential.
Things you must know:
- What type of gas or liquid is being measured?
- Flow rates at the minimum and maximum.
- What are the precision requirements?
- Determine the fluid temperature and viscosity.
- Fluid compatibility with building
- The maximum pressure at the site.
- What is the maximum allowable pressure drop?
• Is the metre installed in a potentially
hazardous location with explosive gases?
• Is the fluid flow constant or variable?
• What kind of output signal or readout are
you looking for?
Utilize your collected data to eliminate
technologies that do not apply (for example, turbines do not work for viscous
fluids, Coriolis metres do not respond quickly enough for injection flow, and
Positive Displacement metres are not cost effective for large pipe diameters
such as a 12 inch diameter line). You will then be able to evaluate difference in the remaining
technologies. Accurate metres are priced based on their capabilities.
It is preferable to find the type of metres that is best suited to your application before trading features for cost
savings. Examine your
extreme conditions carefully, such as high pressure or temperature, low flow
rates or the need to measure over a wide operating range. Use lower-cost
alternatives that are used outside of their capabilities if these conditions
are critical to your quality.
Nagman Flow has diversified into dealing with Flow meters or Instruments, Providing various type of flow meters Electro-Magnetic Flow Meters, Coriolis Mass Flow Meter, Positive Displacement Flow Meter, Vortex Flow Meter, Turbine Flow Meter, Ultrasonic Flow Meter.
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