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Rotameters

High accuracy rotameters for precise flow measurement of liquids and gases in industrial applications.

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Rotameters are reliable industrial flowmeters used to measure the flow rate of liquids and gases. Based on the variable area principle, these devices use a float inside a tapered tube that moves in response to fluid velocity. As the flow increases, the float rises, providing a clear and direct visual reading on a calibrated scale.

At Flowtel Engineering, we provide high quality rotameters in glass, acrylic, and metal bodies to suit diverse industrial environments. These meters are favored for their simple installation, low pressure drop, and the ability to operate without external power. They are widely used in chemical processing, water treatment, and laboratory applications for consistent and cost effective flow monitoring.

Metal Tube Rotameter

Metal Tube Rotameter

Rotameters

Engineered for the most demanding environments, Flowtel Engineering’s Metal Tube Rotameters offer unmatched reliability where glass tubes fail. These robust instruments utilize a sophisticated magnetic coupling system to provide accurate flow readings for opaque liquids and high pressure steam. By eliminating the risk of breakage, our all metal construction ensures maximum safety and process uptime. It is the definitive choice for industries requiring precise flow monitoring under high temperatures and hazardous conditions.

View Details Code: MTR-FL
Purge Tube Rotameter

Purge Tube Rotameter

Rotameters

Flowtel Engineering provides specialized Purge Tube Rotameters designed for the continuous and precise measurement of very low flow rates. These compact instruments are essential for protecting sensitive equipment and maintaining a constant purge in liquid or gas lines. Whether used for bubbler level systems or seal water monitoring, our purge meters ensure a steady, regulated supply. The integrated needle valve allows for fine-tuned control, making it a dependable choice for laboratory and high-stakes industrial applications where even the smallest flow variation matters.

View Details Code: PTR-FL
Acrylic Body Rotameter

Acrylic Body Rotameter

Rotameters

Flowtel Engineering presents a complete range of Acrylic Body Rotameters including Models FLA, FLB and FLC designed for precise flow measurement of air and water in industrial and laboratory applications. Manufactured using high quality acrylic material with superior clarity and strength these rotameters ensure reliable performance easy installation and long service life across various process conditions. Acrylic Body Rotameters Models FLA and FLB for low to medium flow applications Acrylic Body Rotameter Model FLC for higher flow industrial applications

View Details Code: ABR-FL
Glass Tube Rotameter

Glass Tube Rotameter

Rotameters

The glass tube rotameter is precision formed of borosilicate glass, and the float is precisely machined from metal, or plastic. The metal float is usually made of stainless steel to provide corrosion resistance. The float has a sharp metering edge/maximum diameter where the reading is observed by means of a scale mounted alongside the tube. End fittings and connections of various materials and styles are available.

View Details Code: GTR-FL
Bypass Rotameter

Bypass Rotameter

Rotameters

Working Principle of Bypass Rotameter A Bypass Rotameter operates on the variable area flow measurement principle based on Bernoulli's theorem. As fluid or gas passes through the tapered tube, a pressure differential is created across the float, causing it to rise until the upward force balances its weight. The increasing flow area within the tapered tube ensures that the float position remains directly proportional to the flow rate, providing accurate and linear flow indication. Bypass Rotameters are especially suitable for hazardous or remote installations where electrical power is unavailable or unsafe. They offer excellent rangeability of 5:1 to 7:1, direct-reading flow scales, and easy maintenance, allowing range changes or tube cleaning without removing the meter from the bypass line.

View Details Code: BPR-FL
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