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Measure the flow of shielding gas at your TIG nozzle by attaching these gas flow testers. Choose from our selection of mechanical flow meters in a wide range of styles and sizes. In stock and ready to ship.
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- Positive Displacement Flow Meters
- Liquid PD Meters
- Piston Meters
- Gear & Lobe Meters
- Helix Meters
- Metering Pumps
- Gas PD Meters
- High-Precision PD Systems
- Testing, Calibration & Provers
- PD Meter Accessories
Positive displacement meters provide high accuracy (±0.1% of actual flow rate in some cases) and good repeatability (as high as 0.05% of reading). Accuracy is not affected by pulsating flow unless it entrains air or gas in the fluid. PD meters do not require a power supply for their operation and do not require straight upstream and downstream pipe...
Nutating disc meters are the most common PD meters. They are used as residential water meters around the world. As water flows through the metering chamber, it causes a disc to wobble (nutate), turning a spindle, which rotates a magnet. This magnet is coupled to a mechanical register or a pulse transmitter. Because the flow meter entraps a fixed qu...
Oscillating piston flow meters typically are used in viscous fluid services such as oil metering on engine test stands where turndown is not critical (Figure 3-2). These meters also can be used on residential water service and can pass limited quantities of dirt, such as pipe scale and fine (viz,-200 mesh or -74 micron) sand, but not large particle...
The oval gear PD meter uses two fine-toothed gears, one mounted horizontally, the other vertically, with gears meshing at the tip of the vertical gear and the center of the horizontal gear (Figure 3-3A). The two rotors rotate opposite to each other, creating an entrapment in the crescent-shaped gap between the housing and the gear. These meters can...
The helix meter is a positive displacement device that uses two radially pitched helical gears to continuously entrap the process fluid as it flows. The flow forces the helical gears to rotate in the plane of the pipeline. Optical or magnetic sensors are used to encode a pulse train proportional to the rotational speed of the helical gears. The for...
Metering pumps are PD meters that also impart kinetic energy to the process fluid. There are three basic designs: peristaltic, piston, and diaphragm. Peristaltic pumps operate by having fingers or a cam systematically squeeze a plastic tubing against the housing, which also serves to position the tubing. This type of metering pump is used in labora...
PD gas meters operate by counting the number of entrapped volumes of gas passed, similar to the way PD meters operate on liquids. The primary difference is that gases are compressible. Diaphragm gas meters most often are used to measure the flow of natural gas, especially in metering consumption by households. The meter is constructed from aluminum...
High-precision gas meters are usually a hybrid combining a standard PD meter and a motor drive that eliminates the pressure drop across the meter. Equalizing the inlet and outlet pressures eliminates slip flows, leakage, and blow-by. In high-precision gas flow meter installations, high-sensitivity leaves are used to detect the pressure differential...
All meters with moving parts require periodic testing, recalibration and repair, because wear increases the clearances. Recalibration can be done either in a laboratory or on line using a prover. Gas systems are recalibrated against a bell-jar prover--a calibrated cylindrical bell, liquid sealed in a tank. As the bell is lowered, it discharges a kn...
PD meter accessories include strainers, filters, air/vapor release assemblies, pulsation dampeners, temperature compensation systems, and a variety of valves to permit dribble cut-off in batching systems. Mechanical registers can be equipped with mechanical or electronic ticket-printers for inventory control and point-of-use sales. Batching flow co...
Choose from our selection of inline flowmeters for water, panel-mount flowmeters for water, flowmeter/totalizers, and more. In stock and ready to ship.
Compare all of our mechanical meters and select the meter that is right for your application. Automated & Manual Valves and Flow Meters by Assured Automation. Build, view, and order automated ball, butterfly, plug valves, and flow meters online.
Sep 6, 2023 · A mechanical water flow meter is a trusty device designed specifically to measure the flow of water. Imagine a tool that’s like a watchful guardian, keeping tabs on how much water is moving through a system! This meter uses moving parts, such as turbines or gears, which turn as water flows over them.
Click to download mechanical flowmeter catalog. Ideal for monitoring water flow and, when used with control valves, flowmeters permit precise regulation of water flow. Indicating vane visible through sight glass provides continuous flow rate and visual flow verification.
May 25, 2023 · Mechanical (Turbine) or Propeller Flow Meters. Mechanical flow meters force liquid through a physical component that moves when the water pushes on it. The most common type of mechanical flow meter uses a propeller for this purpose.
