Rotameter/Variable Area Flow Meter
Rotameters get their name from the rotating float that is used to indicate the rate of flow.
The float moves both up and down depending on the rate of flow, this means that rotameters are commonly used to measure low flow rates as high flow rates tend to throw off the accuracy of the readings.
These types of flowmeters are great for applications that require an economical solution whether working with gases or liquids across a number of different applications. Read More…
Leading Manufacturers
Sierra Instruments
Monterey, CA | 800-866-0200Sierra manufacturers high performance mass flow meters and controllers for nearly any gas, liquid or steam. Customers choose Sierra when they need an accurate and repeatable flow measurement, short delivery lead times, expert flow advice and long term support.
KOBOLD Instruments Inc.
Pittsburgh, PA | 412-788-2830KOBOLD Manufactures Innovative Instrumentation for Process Measurement and Control – International Leader with Decades of Experience and Knowledge – Comprehensive Line of Products for Flow, Level, Pressure, and Temp – and more.
GPImeters.com
Sparta, NJ | 888-722-3569Turn to GPIMeters.com for top of the line flow meters. Our high quality solutions are very affordable and we will work with you every step of the way. We aim to exceed your expectations and our products will last for many years to come.
HydraCheck
West Valley City, UT | 800-316-5342HydraCheck offers everything needed to service, maintain and troubleshoot hydraulic systems at prices you can afford. We manufacture and distribute diagnostic test kits, flow meters, pressure gauges, tachometers, etc.
John C. Ernst Co., Inc.
Sparta, NJ | 888-463-7678As flow meter manufacturers, John C. Ernst’s measurement equipment can be digital or mechanical, in addition to a variety of other types for different measurements of flow.
Hoffer Flow Controls, Inc.
Elizabeth City, NC | 800-628-4584We are committed to quality, and that shows in all our products and flow meters. Our customers expect the highest quality from us, which is why we promise to do the best job possible in all products from design to manufacturing!
As stated earlier, rotameters work best within applications where a low rate of flow is present, the reading is often done locally although the transmission of readings is an option in certain applications.
Rotameters - GPImeters.com
These flow meters are most commonly made from glass tubes that have markings along the sides in order to indicate the rate of flow visually. Metal rotameters are also available if that is something that your application requires.
As fluid enters the bottom of the rotameter, the float rises upwards within the tapered tube until gravitational force balances out. Typically, rotameters are read as a standard cubic feet per hour of air, this means that rotameres are not subject to constant restriction areas or variable pressure differentials because of the use of variable restriction and constant pressure differentials in order to measure the flow.
These flow meters can be used for a number of different applications as they can be designed to measure the flow rate of both single streams and also multiple streams of fluid or gases. The single flow meters are often mounted directly on the piping and are most commonly used in special conditions for measurements. Multiple tube rotameters are mounted onto a tripod base plate in order to level the system; they can also be mounted on a wall or even bench mounted.
Rotameters - GPImeters.com
Rotameters are popular due to their versatility, simplicity, accuracy, and overall ease of use. It’s no question why rotameters are the go to choice for so many industries.