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Flow Meters: Furness Controls
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Furness Controls

2020 Younts Rd.
Indian Trail, NC 28079
Phone: 704-882-3311, 800-898-5325 (toll free)
Fax: 704-882-3811
Website: http://www.furnesscontrols.com

Business Types: Manufacturer
Founded in:
Market Reach: Canada, Mexico
Employees: 50-99

Manufacturer of low pressure & indicating transmitters, transducers, indicators, scanning boxes, room monitors, electronic calibrators, low pressure supply unit, digital & analog microanometers, pocket manometers for HVAC industry, laminar flow elements, pilot tubes, leak detectors, low instruments, special line of leak detectors & flow instruments for the gas industry, calibrated leaks. A fundamental primary standard (.01 Pascal to 4140 Pascal, .01% uncertainty).


Although flow meters have been in use for years, up until recently were mostly mechanical devices. However, recent advances in electronic technology have given us the the Laser flowmeter , (sometimes referred to as an Ultrasonic flow meter) which uses two laser beams to determine the velocity of small particles almost always present in liquids and industrial gases as they pass through the flowmeter. The two laser beams, which are focused across the flow a short distance apart, are scattered by particles crossing the the beams with the amount of scattering indicative of the speed of the flow Their accuracy comes from their speed not being dependent on thermal conductivity of gases, composition of the gases or minor variations in gas flow. Since these factors have little effect on Laser flow meters measurements are quite accurate and repeatable.