OMEGA Engineering, Inc. Datasheets for Gas Flow Meters

Gas flow meters are used for measuring the flow or quantity of a moving gas in an enclosed pipe or passage.
Gas Flow Meters: Learn more

Product Name Notes
Flowmeter Control Information System -- FLR D Available in 1/2", 3/4", and 11/4" sizes with anodized aluminum, brass and/or stainless steel flow cartridges. Comes with 4.5 m (15') of stripped end integral cable. In the field, integral...
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 -- 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...
High-Capacity In-Line Flowmeter -- FL-45200A FL45200 Series flowmeters feature a rugged, one-piece meter body of heat- and chemical-resistant injection molded polysulfone. Half union connectors couple the meter body to 2" FPT polysulfone adaptors at each...
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...
Air/Water Flow Sensor -- FLR1000 FLR1000 Series flow sensors can measure extremely low flow rates from 20 mL/min to 500 L/min. These sensors are suitable for a wide variety of industrial, commercial, and laboratory flow...
Economical Mass Flowmeter -- FMA3100 / FMA3300 FMA3100 Series mass flow sensors represent a breakthrough in mass flow sensor technology. State-of-the-art electronics, a compact mechanical design, and mass production tooling concepts are combined into one high-performance, cost...
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...
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.
In-Line Flowmeter With Limit Switches -- FL-6300
In-Line Flowmeter With Limit Switches -- FL-6700
OMEGA ® in-line flowmeters offer high accuracy flow rate indication for oil or water and the ability to either control the flowrate or alarm on high or low flowrates. These...
Pneumatic In-Line Flowmeter -- FL-2900
Pneumatic In-Line Flowmeter -- FL-6900
Pneumatic In-Line Flowmeter -- FL-7900
Pneumatic In-Line Flowmeter -- FL-8900
OMEGA ® multi-pressure pneumatic flowmeters feature a rugged anodized aluminum body design and easy installation. For air/compressed gas applications, these flowmeters include ranges from 5-5.0 SCFM to 50-1000 SCFM, at...
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...
High Pressure Mass Flowmeter -- FMA-8500 OMEGA® FMA-8500 Series high pressure mass flowmeters feature a superior ±0.25% repeatability for accurate measurement and control of gas flow. The flow sensor produces a 0 to 5 Vdc output...
Thermal Dispersion Gas Flow Switch -- FST-320 OMEGA’s FST-320 Series thermal dispersion flow switches, especially designed for use with gases, sense changes in the heat transfer characteristics of the gases. Flow velocities from 1 to 90 fps...
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...
Panel Mount Flowmeter -- FL50000A OMEGA® FL50000 Series flowmeters feature a rugged, one-piece machined acrylic meter body, stainless steel internal parts, rear inlet and outlet ports for panel mounting, and excellent accuracy. The stainless...
Stainless Steel Frame Flowmeter -- FL600 Rotometer for air and water applications. SPECIFICATIONS Accuracy: ±3% of full scale, Repeatability: ±1% Scale: 127 mm (5"), Wetted Parts: 316 stainless steel borosilicate glass, EPR O-Rings, Max. Temp.: 93°C...
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 Flowmeter for Water and Air -- FL-500 The FL-500 Series in-line flowmeters feature rugged construction, easy installation and direct reading flow rates for water and air at atmospheric and 90 psi pressures. For added versatility, the FL-500...
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...
In-Line Pneumatic Flowmeter -- FLMG The FLMG flowmeters feature rugged construction, easy installation and direct reading flow rates of air. The units are calibrated at 100 psi pressure suitable for most compressed pneumatic applications. The...
Mass and Volumetric Flowmeters -- FVL-1600A / FMA-1600A The FMA-1600A and FVL-1600A Series mass and volumetric flowmeters use the principle of differential pressure within a laminar flow field to deterime the mass flow rate. A laminar flow element...
Programmable Mass Flowmeter / Totalizer -- FMA-4100 / 4300 The FMA-4100/4300 Series flow rate can be displayed in 23 different volumetric flow or mass flow engineering units including a user specific selection. Flowmeters can be programmed remotely via RS232...
Mass Flowmeter -- FMA-A2100 / FMA-A2300 The FMA-A2100/2200/2300/2400 Series Electronic Mass Flowmeters/ Controllers provide high performance, versatility and state-of-the-art design in one compact package. The FMA-A2100/ 2200/2300/2400 uses capillary-type thermal technology to directly measure mass flow...
Mass Flowmeter -- FMA1700 / FMA1800 The FMA1700/1800 Series electronic gas mass flowmeters provide for monitoring the flow of a wide variety of gases from 10 SCCM up to 1000 SLM. Utilizing heat transfer through a...
Stainless Steel Mass Flowmeter -- FMA2700 / FMA2800 The FMA2700/FMA2800 Series Electronic Mass Flow meters and FMA3700/FMA3800 Mass Flow Controllers provide high flow measurement performance and versatility. Omega’s new inline series features a “flow-through” zero dead space design...
Stainless Steel Mass Flowmeter -- FMA3100ST / FMA3300ST The FMA3100/3300ST Series will precisely measure flow rates of virtually any clean, dry gas as low as 0.4 to 20 SCCM or as high as 10 to 500 SLPM, including...
Economical Air Flow Switch -- FST1000 The FST1000 Series measures air velocity and provides two SPST alarm contact closures corresponding to high and low alarm set points. The alarm set points are adjustable from 0 to...
Thermal Dispersion Flow Switch -- FSW-6000 / FSW-7000 The FSW-6000/7000 Series are thermal flow switch monitors designed to monitor flow status and also used to detect level of liquids, air and gas. A chain of 8 LED’s gives...
All Plastic Flow Sensor -- FTB600B The OMEGA ® FTB600B Series Flowmeters feature an infrared, electro-optical transmitter and receiver molded into the flowmeter’s body, along with two miniature circuit boards to provide voltage stabilization and automatic...
Heavy Duty Flowmeter -- FL900 The Omega FL900 series are heavy duty flowmeter with stainless steel enclosures, unique float stop design allowing internals to be reomoved and replaced without disturbing the tube and the tube...
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
Pneumatic In-Line Flowmeter -- FL-6700A
Pneumatic In-Line Flowmeter -- FL-7700A
Pneumatic In-Line Flowmeter -- FL-8700A
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...
Compact Relay Controller Flow Switch -- FST-200-R / FST-300-R This switch package offers a complete solution for flow or no-flow switching in pipes or ducting ranging up to 16". The compact relay controller provides reliable actuation of valves, pumps...
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...
Vortex Flowmeter -- FV-500C • Custom Built to Order - CONSULT FLOW ENGINEERING • SSP (Spectral Signal Processing) Technology • Measures Steam, Gas, and Low Viscosity Liquids • Clear Parallel Two-Line LCD Display. Displays...
Multi Parameter Mass Flowmeter -- FMA6600
Multi Parameter Mass Flowmeter -- FMA6700
• Multi-Drop Capability of Up to 256 Units (for RS-485 Option) • Stores Calibration Data for Up to 10 Different Gases • Supports 10 Different Engineering Units Including User Defined...
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