Leading Rotometers Manufacturers

Rotometers

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…

Rotometers 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.

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.

Sierra Instruments $$$

AW-Lake Company manufactures flow monitoring equipment and goes to market through four brands: TRICOR Coriolis Technology, LAKE Monitors, AW Gear Meters and Turbine Flow. The broad range of flow meters include coriolis mass, positive displacement, variable area and turbine technologies. We service many industries, including oil & gas, automotive, food & beverage, chemical processing and...

AW-Lake Company $$$

Turbines is an ISO 9001:2000 certified manufacture specializing in the design of high quality, cost-efficient rugged turbine flow meters for industry oil and gas, and business flow measurement applications that require accuracy, repetition and reliability. We have established ourselves as a trusted leader in the field of flow measurement. We also offer a wide range of accessories such as...

Turbines, Inc. $$$

At Niagara Meters, we specialize in providing high-quality flow meters and comprehensive solutions to meet the diverse needs of industries worldwide. With our dedication to excellence and extensive experience, we have established ourselves as a trusted leader in the field of flow measurement. Our product portfolio encompasses a wide range of flow meters meticulously engineered to deliver accurate ...

Niagara Meters $$$

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...

SIKA USA $$$
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placeholder image Sierra Instruments AW-Lake Company Turbines, Inc. Niagara Meters SIKA USA

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.

Rotometer Informational Video

 

Flow Meters Power Pages

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