Nutating Disc meters are the most common and accurate type of positive displacement meters. These rugged and reliable meters are a cost-effective solution for metering industrial fluids, including condensate return, boiler feed, additive dispensing and other applications.
How does a impeller flow meter work?
Impeller meters feature a six-bladed design with a proprietary, non-magnetic sensing mechanism. As the liquid flow turns the impeller, a low impedance square wave signal is transmitted with a frequency proportional to the flow rate.
What is a turbine flow meter?
A liquid turbine meter is used for volumetric total flow and/or flow rate measurement and has a relatively simple theory of operation. As fluid flows through the meter, it impinges upon turbine blades that are free to rotate about an axis along the center line of the turbine housing.
How does a oscillating piston meter work?
Oscillating piston flow meters utilize a precision-machined chamber that contains a cylindrical piston. Liquid enters the precision-machined chamber containing an oscillating (rotating) piston. The piston is positioned to divide the chamber into compartments that hold a pre-measured exact volume.
What is a displacement meter used for?
Positive displacement flowmeters measure the volumetric flow of fluids in pipes, such as water, hydrocarbons, cryogenic liquids, and chemicals. Some designs can measure gas flow although liquid flow applications are much more prevalent.Positive displacement flowmeters measure the volumetric flow of fluidsflow of fluidsIn physics and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids—liquids and gases. It has several subdisciplines, including aerodynamics (the study of air and other gases in motion) and hydrodynamics (the study of liquids in motion).https://en.wikipedia.org › wiki › Fluid_dynamicsFluid dynamics - Wikipedia in pipes, such as water, hydrocarbons, cryogenic liquids, and chemicals. Some designs can measure gas flow although liquid flow applications are much more prevalent.
What are the two types of water meters?
There are two conventional measuring devices for water flow measurement, the positive displacement water meter, and the velocity meter. Less common options include non-mechanical designs of electromagnetic and ultrasonic meters and electromechanical meters.There are two conventional measuring devices for water flow measurement, the positive displacement water meter, and the velocity meter. Less common options include non-mechanical designs of electromagnetic and ultrasonic metersultrasonic metersAn ultrasonic flow meter is a type of flow meter that measures the velocity of a fluid with ultrasound to calculate volume flow. They vary greatly in purchase price but are often inexpensive to use and maintain because they do not use moving parts, unlike mechanical flow meters.https://en.wikipedia.org › wiki › Ultrasonic_flow_meterUltrasonic flow meter - Wikipedia and electromechanical meters.
What are the different types of water meters?
- Positive Displacement Meters (PD Meters)
- Velocity Flow Meters.
- Electromagnetic Water Meters.
- Ultrasonic Water Meters.
Which is displacement or positive meter?
Positive Displacement flow meters are the only flow measuring technology to directly measure the volume of fluid that passes though the flow meter. It achieves this by trapping pockets of fluid between rotating components housed within a high precision chamber.
How does an oval gear meter work?
Oval gear meters consist of two toothed precision wheels that are oval shaped. As fluid passes through the meter, the oval wheels rotate proportionately—the number of rotations is equal to the volume measurement.
What is oval gear flow meter?
The oval gear flow meter comprises oval-shaped, geared rotors which rotate within a housing of specified geometry. Fluid differential pressure causes the intermeshing gears to rotate, trapping a 'pocket' of fluid between the gear and the outer housing and subsequently emptying the fluid pocket into the downstream flow.
How does a gear flow meter work?
Gear flow meters use two round gears that are mounted in overlapping compartments. The measured fluid is trapped in the voids of the gear teeth and transported from the inlet port to the outlet port as the fluid flow causes the gears to rotate.
How does a nutating disc meter work?
Nutating disc flow meters are one of the most common types of positive displacement flow meter. They operate by having a disc mounted to a central ball. When fluid enters the chamber, it causes the disc to wobble (nutate), transferring the displaced volume to the register.
How does a digital water flow meter work?
The basic principle of operation employs the frequency shift (Doppler Effect) of an ultrasonic signal when it is reflected by suspended particles or gas bubbles (discontinuities) in motion. The turbine meter can have an accuracy of 0.5% of the reading.
What is the difference between flow meter and water meter?
The quick and dirty difference is that a water meter measures the volume of water as it passes through the meter and a flow meter measures the speed at which the water passes through the meter. In addition to liquids, flow meters are also used to measure gases.