OMEGA Engineering, Inc. Datasheets for Rotameters

Rotameters are typically tapered glass tubes positioned vertically in the fluid flow. A float within the tube rides upward in relation to the amount of flow.
Rotameters: Learn more

Product Name Notes
Direct Read Rotameter -- FLD Designed for direct read flow rates, the FLD Series rotameter is a precision instrument embodying the inherent simplicity, versatility and economy of the classical rotameter. It is particularly suitable for...
General Purpose Purge Rotameter -- FL-1300
General Purpose Purge Rotameter -- FL-1400
FL-1300 series rotameters are supplied with an easy-to-read 65 mm (2.6") scale. The FL1400 series features a large, easy-to-read 150 mm (5.9") scale, with correlation charts for air and water...
Glass Tube Flowmeter -- FL-5000 FL-5000 series rotameters are supplied standard with a 9-turn cartridge valve. Optionally available are units without a valve or with a 16-turn non-rising stem precision valve.
OEM Style Acrylic Rotameter -- FL4200
OEM Style Acrylic Rotameter -- FL4300
OEM Style Acrylic Rotameter -- FL4400
OEM Style Acrylic Rotameter -- FL4500
OEM Style Acrylic Rotameter -- FL4600
FL4000 OEM-style acrylic rotameters are precisely machined from rugged, solid acrylic blocks for superb durability. They are available in 50 mm, 75 mm, 127 mm, and 250 mm scale lengths...
OEM Style Acrylic Rotameters -- FL7000 FL7000 OEM-style rotameters are precisely machined from solid acrylic blocks. They are available in 50, 75, 100, 127, and 250 mm scale lengths (1.97, 2.96, 5, 3.94, and 9.85") and...
Direct Read In-Line and Panel Rotameter -- FLD1000
Direct Read In-Line and Panel Rotameter -- FLD2000
Incorporating traditional variable area precision glass technology, these rugged PTFE flow meters offer accurate and economical solutions to medium flow range measurements. FLD1000/FLD2000 are designed with unique rotatable scales of...
Rotameter for Liquid Flow -- FL-10 Made entirely of PTFE, PFA, and PCTFE, the Model FL-10 liquid flow meter is excellent for high-purity flow measurement applications or use with corrosive liquids. These flowmeters are available with...
Heavy Duty Industrial Rotameter -- FL-1600 OMEGA ® FL-1600 industrial flowmeters are designed for high accuracy industrial uses. They feature dowel-pin, side plate construction and externally adjustable packing glands for use in industrial piping systems.
Low Cost Industrial Rotameter -- FL-75 OMEGA ® FL-75 flowmeters combine shatter resistant, non-glass construction and laboratory precision accuracy at an economical price.
High Accuracy Rotameter -- FL-1500A OMEGA FL-1500 flow meters combine 2% accuracy and side plate construction at an economical price. These flowmeters feature glass and 316 stainless steel construction, with aluminum side plates and acrylic...
Multiple Tube Rotameter -- FL2AA OMEGA’s multi-tube rotameters are convenient for applications where up to six streams of liquids or gases are to be metered in individual channels. Flow pattern B represents multiple inlets manifolded...
Rotameter with Alarm -- FLSW3400 / FLSW3500 The 150 mm High/Low Alarm Flow Meter with Optical Sensor Switch is a noninvasive means for detection of a HI or LOW flow. This sensor is ideal for signaling an...
Economical Purge Rotameter -- FL1200 The FL-1200 flowmeters provide a low-cost means of flow rate indication. They are designed for applications where precise accuracy requirements for metering are not imperative. These meters are ideal for...
Acrylic Flowmeter -- FL-2000 The FL-2000 Series offers a wide variety of precision flowmeters for use in medical, industrial, chemical, and laboratory applications at an economical price. Units are available with or without valves.
Direct Read Acrylic Rotometer Kit -- FL-2500 The FL-2500 Series direct read rotometer kits offer versatility at a low cost. Each kit includes seven interchangeable direct read scales for air, water, Argon, CO2, Helium, Nitrogen and Oxygen.
PTFE Rotameter With PTFE Valves -- FL-3007SA The FL-3000 and FL-3100 Series flowmeters are designed for applications which involve corrosive or ultra-pure fluids. The meters are equipped with built-in PTFE needle valves with Kel-F, borosilicate glass, sapphire,...
In-Line Flowmeters -- FL46300 The FL46300 Series of liquid in-line flow meters offer individual, handmade quality, combined with excellent accuracy and repeatability. These flowmeters are machined of high quality acrylic rod stock, carefully polished...
Stainless Steel Frame Flowmeter -- FLD100 The FLD100 Heavy-duty flowmeters are fully enclosed in a brushed stainless steel case. Ideal for industrial applications with flow rates up to 116 GPM and 250 SCFM. Used with industrial...
150 mm Rotameter -- FL-3800
150 mm Rotameter -- FL-3900
65 mm Rotameter -- FL-3600
65 mm Rotameter -- FL-3700
The OMEGA® precision variable-area rotameters for air, water, and gases have up to ±2% of full scale accuracy and 0.25% of full scale repeatability. These units feature an easy-to-read millimeter...
150 mm Rotameter -- FL3400
150 mm Rotameter -- FL3500
65 mm Rotameter -- FL3200
65 mm Rotameter -- FL3300
The OMEGA® precision variablearea rotameters can measure flows of air, water, and gases, with up to ±2% FS accuracy and 0.25% FS repeatability. These units feature an easy-to-read millimeter scale...
Pneumatic In-Line Flowmeter -- FL-2700A This rugged direct-reading flowmeter monitors air flowrates to determine optimum performance, flow regulator settings, or pneumatic system performance. It is intended for use in mobile or industrial pneumatic systems as...
Multi-tube Rotameters -- FL-1/2/3/4/5/6/7/8GP To blend two or three gases in homogeneous infinitely variable concentrations, directly at the end use point, these rotameters are unsurpassed in convenience and economy. Gas proportioning rotameters pay for...
All Plastic Rotameter -- FL-86 • NIST Calibration Available • Union Ends to Simplify Installation and Maintenance • Chemical- and Break-Resistant Metering Tube • See-Through, Detachable Direct Reading Scale (GPM Water) • Vertical In-Line Connections...
Variable Area Rotameter -- FL-1340
Variable Area Rotameter -- FL-1440
• Shielded for pressurized systems • Panel mounting design • Non-rising stem needle valve • Compact, 65mm scale • Easy-to-read 150mm scale