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.
Sierra 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.$$$
HydraCheck offers everything needed to service, maintain and troubleshoot hydraulic systems at prices you can afford. We manufacture and distribute diagnostic test kits, flow meters, pressure gauges, tachometers, etc.$$$
Aalborg Instruments & Controls is a globally recognized manufacturer of precision instrumentation for flow measurement and control. We offer variable area flow meters, thermal mass flow controllers, and more. Since our founding in 1972, it has been our commitment to develop, produce and deliver the highest quality products and services, as well as consistently meet or exceed customer requirements. We are ISO 9001:2015 certified.$$$
As a custom flow meter manufacturer, it is our goal at RCM Industries to be your number one source for flow meters. All flow meters are suitable for measuring water, oil, and most low viscosity liquids, and are available in Monel, stainless steel, and bronze alloys. With every application, we aim to improve productivity, reduce cost, and protect the most sensitive equipment and processes.$$$
SeaMetrics, a flow meter manufacturer, produces turbine flow meters, paddle wheel flowmeters, insertion flow meters, low-flow meters, water flowmeters, pulse flowmeters, flow sensors and electronic controls.$$$
Spirax Sarco is an established manufacturer of a variety of flowmeter products for liquid, gas and steam applications for a wide range of markets. Spirax Sarco is able to provide its customers with a family of products capable of measuring and controlling most liquids and gases.$$$