Flow Meters Types and Terms
Flow Meter Types
- are used to measure the flow of air.
-
are used to measure the force of acceleration resulting from a moving
object towards or away from the center of rotation.
- are used to measure the flow of fluids and gases
in a pipe by introducing constriction that causes the pressure to drop.
The pipe must be clean to result in accurate measurements.
-
measure flow at one position in a pipe, and then, based on the measurement,
they estimate the flow rate for the entire pipe.
-
measure by creating a magnetic field that is channeled into the liquid
and causes a voltage signal to be sensed that is proportional to the
flow of liquid.
-
are used to measure gas flow and are one of the more popular flow meters.
This meter is relatively unaffected by changes in temperature or pressure
in the tube or pipe.
-
are used to measure the flow of liquids when they are open to the atmosphere.
-
are used by patients with asthma or other lung disorders to measure
the amount of air patients take into their lungs. These flow meters
allow physicians to determine the severity of the illness.
- trap liquid to measure its flow by rotating parts
that move between seals and the meter body.
- have a rotating float that moves vertically through a tapered tube.
-
allow the operator to view the liquid as it is moving. Some models come
equipped with lights to enhance the visibility of the fluids.
-
measure the amount of force that is exerted on a target in a particular
liquid or gas. This should not be used to measure high viscosity liquids
because the target can be damaged.
-
are meters that use thermal properties of fluids to measure the flow.
The meter is heated and as the liquid flows by, it can tell the flow
rate by the amount of heat lost.
-
consist of a rotor that measures the fluid when it passes through the
blades. The blade speed is translated into the speed of the fluid
-
use sound to determine flow rate. Both Doppler Effect meters and time-of-flight
meters are different kinds of this type.
- measure by letting the flow stream change the opening
in the meter with a movement of an internal part.
- generate oscillations as a result of the flow that allows
a measurement to be taken.
-
are flow meters designed for measuring flow rates of water in various
channels, tubes, partially filled pipes, streams, and rivers.
- Atmospheric pressure plus gage pressure.
- Area where fluid
is under pressure and stored as a source of power.
- The temperature
an instrument needs to maintain to perform its designated function.
- The force that
occurs when a mass has a velocity moving outward in a rotating plane.
- A mass that
is added to a particular substance to create a more balanced and stable
apparatus.
- The flow rate of electricity.
- A substance's
mass per unit of volume.
- The travel of materials
in response to a force, such as pressure.
- A constriction
made of a contoured plate that forms a hole for the flow stream so a measurement
can be taken.
- The velocity of
flow.
- The loss of pressure
in a flow system that is measured with a length parameter (such as amount).
- Allows for a flow
meter to be inserted or removed without causing a complete system shutdown.
- A device
that measures the total flow of fluids.
- Measures fluid pressure.
This is a U-shaped tube containing liquid which adjusts with the pressure
in the tube.
- The volumetric
flow rate of a liquid or gas times its density, expressed as pounds per
hour or kilograms per minute.
- The potential
of energy when a liquid is in a position or height above a place to which
it can potentially flow.
- The part of a flow
meter that senses fluid as it passes through the device.
- The part of a
flow meter that produces the usable flow information from the transducer.
- A connection for
a metal pipe that is used to aid as a fitting for insertion-type sensors
or meters.