Showing posts with label Variable Area Flow Meters. Show all posts
Showing posts with label Variable Area Flow Meters. Show all posts

Tuesday, June 18, 2019

Variable Area Flow Meters

Variable area flow meters

Variable area flow meters, also referred to as Rotameters, have diverse industrial processing applications that range from simple to sophisticated. The devices are easy to install, require no electrical connection, and provide direct flow rate reading. They provide fail-safe flow rate readings in a wide array of industrial applications.

Variable Area Flow Meters: An Overview 

Developed by German inventor Karl Kueppers in 1908, Rotameters measure the volumetric flow rate of liquids and gases. 

Important elements of a variable area flow meter include the tube and the float. Their operation is simple. The tube is fixed vertically and the fluid is fed from the bottom. It travels upward and exits from the top. The float remains at the bottom when no liquid is present and rises upward when fluid enters the tube. 

The float inside the tube moves in proportion to the rate of fluid flow and the area between the tube wall and the float. When the float moves upward, the area increases while the differential pressure decreases. A stable position is reached when the upward force exerted by the fluid is equal to the weight of the float. A scale mounted on the tube records the flow rate of the liquid. Usually, the flow can be adjusted manually using a built-in valve. 

Types of Variable Area Flow Meters 

Variable area flow meters can be categorized by the type of tube they use, which relates to their ability to withstand various pressures, temperatures, process media, and cost. Process connection size and wetted part materials vary as a function of the rotameter type and construction. 

Plastic variable area flow meter
Plastic Tube
Rotameter
(Brooks)

Plastic Tube Variable Area Flow Meter

For many non-corrosive, low-pressure air, water and gas flow applications. Made of machined acrylic or molded polycarbonate.

Applications:
  • Water treatment systems
  • Gas analyzers
  • Air sampling equipment 
  • Desalinization equipment
  • Medical equipment
  • Photo processing equipment
  • OEM machines
Glass variable area flow meter
Glass Tube
Rotameter
(Brooks)

Glass Tube Variable Area Flow Meter

The basic glass variable area flow meter consists of borosilicate glass tube while the float is made of either glass, plastic, or stainless steel. The most common combination is a glass tube and metal float. This is suitable for a measure the flow rate of liquid of low to medium temperatures and pressures. 

Applications:
  • Analytical instrumentation
  • Industrial processes
  • Chemical production
  • Pharmaceutical production
  • Oil & gas extraction
  • Refining processes
  • Fuel cell research
  • Water treatment systems
Metal variable area flow meter
Metal Tube
Rotameter
(Brooks)

Metal Tube Variable Area Flow Meter

Metal tube variable area flow meters are another type that is suitable for temperatures and pressures beyond the physical and mechanical limits of glass tube versions. They are generally manufactured of stainless steel, aluminum, or brass. The piston position is determined by the mechanical and magnetic followers that can be read from the outside of the tube. They are suitable in situations where applications conditions would damage the glass metering tubes, such as steam applications.

Applications:
  • Purge liquid or gas metering
  • Liquid, gas, or oil flow measurement
  • Chemical injection
  • Rotating equipment flow measurement
  • High-pressure flow meters for offshore oil platforms
For more information, contact Flow-Tech, Inc. by calling 410-666-3200 in Maryland or 804-752-3450 in Virginia. Or, stop by the website at https://flowtechonline.com.

Tuesday, February 26, 2019

The Brooks GT1600 Industrial Glass Tube Variable Area Flowmeter


The Brooks Instrument GT1600 Series glass tube VA flow meters are a NEW family of meters with a rugged design for long-lasting performance with low and high-flow gas and liquid applications where viewing the process is important. These versatile and economical meters are for general use in applications with moderate metering accuracy requirements — typical accuracy ranges are 1% to 10% full scale, depending on the model selected. They are ideal for purge type service, seal oil systems, bearing lubrication and cooling water indication.

The GT1600 Series flow meters are configurable to retro-fit existing Brooks Instrument GT1000, GT1300 and Full-View® 1100 Series meters (models 1110, 1114, 1140, 1144).

Contact Flow-Tech, Inc. about Brooks Instrument products in Maryland and Virginia.
MD: 410-666-3200
VA:  804-752-3450
https://flowtechonline.com

Wednesday, September 12, 2018

Brooks Instrument

Brooks Instrument is the global leader in flow and pressure instrumentation, enabling precision process control for industrial and semiconductor applications.

Products include:
  • Mass Flow Controllers & Meters
  • Variable Area Flow Meters (Rotameters)
  • Pressure & Vacuum Products
  • Vaporization Products
  • Semiconductor Products

Represented in Maryland and Virginia by Flow-Tech, Inc.
https://flowtechonline.com
410-666-3200 MD
840-752-3450 VA