Rotometers are flow meters named for the rotating float which functions as the meter’s indicating element. A float moves up and down a tapered tube according to the rate of flow.
Rotometers are typically used to measure low flow rates and are an economical method of indicating and controlling gas and liquid flow for several applications.
Typically, rotometers are used to measure smaller flows and the reading is usually done locally, although transmission of the readings is possible. Read More…
Sierra InstrumentsMonterey, CA | 831-373-0200
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. When it matters, choose Sierra. Visit www.sierrainstruments.com.$$$
SIKA USASturtevant, WI | 262-886-2695
SIKA is a developer and manufacturer of flow control products and a wide variety of other measuring and monitoring systems. Our inventory includes flow sensors, flow meters, flow switches, and many more. We know that flow solutions aren't one-size-fits-all, which is why we provide consultation and flow management solutions that are individualized and customized to your requirements. When you...$$$
MAG Flow MetersSalinas, CA | 831-884-3109
MAG Flow Meters has been a premier supplier of flow meters for more than 25 years. With our hard work and dedication, we are able to provide high-quality products and competitive prices. Over the years, we have continued to grow and expand, raising industry standards in the process. Our commitment to quality and customer satisfaction makes us a premier flow-meter industry leader.$$$
Burkert USA CorporationIrvine, CA | 800-325-1405
The flow meters that we are able to provide will withstand the tests of time in order to provide a long lasting value! We have locations in thirty five countries worldwide and we are dedicated to being wherever you need us to be! We have the knowledge and the capability to work with you closely in order to come up with the perfect product to suit your needs! Visit our website today to learn more...$$$
Tek-Trol LLCCrystal Lake, IL | 847-857-6076
Tek-Trol LLC is one of the industry's longest-running and most experienced flow meter manufacturers. Our passionate, highly skilled workers and our advanced technology allow us to make the best metal fabrications in the industry. Our commitment to quality, innovation, and customer satisfaction make us a preferred choice for companies looking for flow meters. We are focused on continually...$$$
Rotometers Companies List
Most rotometers are made of glass with markings on the outside so that flow readings can be taken visually, similarly to flow indicators; however, metal rotometers are also available. Rotometers are advantageous due to the simplicity of the device and the constant pressure drop they offer. Also, rotometers do not require straight pipe runs for installation so installation can be performed almost anywhere.
The selection of the appropriate rotometer for a particular application requires attention to a few key details. These include which gas will be used, the required flow rate, the number of streams to be measured and whether a metering valve is included.
Rotometers are favorable for their simplicity, versatility, accuracy, and ease of use. For all these reasons, rotometers are the flow meter of choice for many industries. Rotometers consist of a float that moves vertically through a slightly narrowing tube. As fluid enters the bottom of the rotometer, the float is forced upward until the force is balanced by gravitational forces.
Like peak flow meters, graduations are marked on the tube so that the level of the float can be aligned with a gradient to provide an accurate, fast and easy-to-understand flow rate reading. Rotometer tubes are read directly in standard cubic feet per hour of air. Rather than using a constant restriction area and a variable pressure differential, rotometers use a variable restriction and a constant pressure differential to measure flow.
Rotometers may be designed to measure the flow rate of single or multiple streams. Single tube rotometers are usually mounted directly on the piping and they are used with non-corrosive materials.
Single tube rotometers are used if there are special conditions for the measurement or when a basic flowmeter will suffice. Multiple tube rotometers are mounted to a tripod base plate with feet to level the assembly. They may also be bench or wall mounted. This kind of rotometer takes measurements for flow rates of more than one stream of gas or liquid. Other variations are also available.