Acrylic Rotameters

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Dakota Instruments’ Acrylic Meters offer solid, one-piece meters with a clear-as-glass finish, English or Metric scales, good accuracy and repeatability, and economical prices. Designed to measure routine gases, these meters are equipped with interchangeable easy-to-read scales. Models are equipped with a yellow colored backing or white back reflector to enhance readability and help minimize eye fatigue.

Features include:

Easy disassembly and assembly for cleaning
Panel mounting by means of hex nuts
Models with or without built-in low hysteresis needle valves
User-convertible panel to partial or full in-line mounted configurations
Stable, easy-to-read float
Superior quality
±5 % of full scale reading
Optional kits with direct reading scales displaying air, water, argon, nitrogen, helium, carbon dioxide, and oxygen in both English and metric units

Argon Flow Meters - Acrylic, Brass Fittings, Valve Included

This Acrylic Flow Meter with Valve has a Dual Direct Reading Scale with yellow backing for easy viewing of Argon flow values. Viton^® Seals, 3/8" FNPT and Brass End fittings are standard. The float/guide material is 316 Stainless Steel. This Flow Meter is designed for panel mounting and can handle a Maximum Flow Rate of 525 LPM (19 SCFM).
Argon Flow Meter - Acrylic, Polypropylene Fittings, No Valve

This Acrylic Flowmeter has a Dual Direct Reading Scale with yellow backing for easy viewing of Argon flow values. Viton^® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 2500 LPM (90 SCFM). No Valve.
Air Flow Meter - Acrylic, Polypropylene Fittings, Valve Included

This Acrylic Flowmeter has a Dual Direct Reading Scale with yellow backing for easy viewing of Air flow values. Viton^® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 3000 LPM (100 SCFM). Valve Included.
Nitrogen Flow Meter - Acrylic, Polypropylene Fittings, No Valve

This Acrylic Flowmeter has a Dual Direct Reading Scale with yellow backing for easy viewing of Nitrogen flow values. Viton^® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 3000 LPM (100 SCFM). No Valve.
Water Flow Meter - Acrylic, Polypropylene Fittings, No Valve

This Acrylic Flowmeter has a Dual Direct Reading Scale with yellow backing for easy viewing of Water flow values. Viton^® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 60 LPM (15 GPM). No Valve.
Argon Flow Meter - Acrylic, Polypropylene Fittings, Valve Included

This Acrylic Flowmeter has a Dual Direct Reading Scale with yellow backing for easy viewing of Argon flow values. Viton^® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 2500 LPM (90 SCFM). Valve Included.
Air Flow Meter - Acrylic, Polypropylene Fittings, No Valve

This Acrylic Flowmeter has a Dual Direct Reading Scale with yellow backing for easy viewing of Air flow values. Viton^® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 3000 LPM (100 SCFM). No Valve.
Water Flow Meter - Acrylic, Polypropylene Fittings, Valve Included

This Acrylic Flowmeter has a Dual Direct Reading Scale with yellow backing for easy viewing of Water flow values. Viton^® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 60 LPM (15 GPM). Valve Included.
Carbon Dioxide Flow Meters - Acrylic, Brass Fittings, Valve Included

This Acrylic Flow Meter with Valve has a Dual Direct Reading Scale with yellow backing for easy viewing of Carbon Dioxide (CO2) flow values. Viton^® Seals, 3/8" FNPT and Brass End fittings are standard. The float/guide material is 316 Stainless Steel. This Flow Meter is designed for panel mounting and can handle a Maximum Flow Rate of 475LPM (17 SCFM).
Nitrogen Flow Meter - Acrylic, Polypropylene Fittings, Valve Included

This Acrylic Flowmeter has a Dual Direct Reading Scale with yellow backing for easy viewing of Nitrogen flow values. Viton^® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 3000 LPM (100 SCFM). Valve Included.
Helium Flow Meter - Acrylic, Brass Fittings

Available for multiple flow rates, this Acrylic Flow Meter has a Dual Direct Reading Scale with yellow backing for easy viewing of Helium flow values. Viton Seals, 1/8" FNPT and Brass End fittings are standard. The float material varies based on the metering range (316 SS, Carboloy, Glass). Available for metering flow rates from 2.0 LPM (4.0 SCFH) to 110 LPM (250 SCFH).
Oxygen Flow Meter - Acrylic, Brass Fittings

Available for multiple flow rates, this Acrylic Flow Meter has a Dual Direct Reading Scale with yellow backing for easy viewing of Oxygen flow values. Viton Seals, 1/8" FNPT and Brass End fittings are standard. The float material varies based on the metering range (316 SS, Carboloy, Glass). Available for metering flow rates from 1.1 LPM (2.5 SCFH) to 45 LPM (90 SCFH).
Acrylic In-Line Flow Meter, Polypropylene Connector, No Valve - Water

Acrylic In-Line Flow Meter, Polypropylene Connector, No Valve - Water
Acrylic In-Line Flow Meter with 316 Stainless Steel Guide Rods, Polypropylene Connector, No Valve - Water

Acrylic In-Line Flow Meter with 316 Stainless Steel Guide Rods, Polypropylene Connector, No Valve - Water
High Volume Acrylic In-Line Flow Meter with 316 Stainless Steel Guide Rods, PVC Connector, No Valve - Water

High Volume Acrylic In-Line Flow Meter with 316 Stainless Steel Guide Rods, PVC Connector, No Valve - Water
Oxygen Flow Meter - Acrylic, Stainless Fittings

Available for multiple flow rates, this Acrylic Flow Meter has a Dual Direct Reading Scale with yellow backing for easy viewing of Oxygen flow values. Viton Seals, 1/8" FNPT and Stainless Steel End fittings are standard. The float material varies based on the metering range (316 SS, Carboloy, Glass). Available for metering flow rates from 1.1 LPM (2.5 SCFH) to 45 LPM (90 SCFH).
Helium Flow Meter - Acrylic, Stainless Fittings

Available for multiple flow rates, this Acrylic Flow Meter has a Dual Direct Reading Scale with yellow backing for easy viewing of Helium flow values. Viton Seals, 1/8" FNPT and Stainless Steel fittings are standard. The float material varies based on the metering range (316 SS, Carboloy, Glass). Available for metering flow rates from 2.0 LPM (4.0 SCFH) to 110 LPM (250 SCFH).
High Capacity Acrylic In-Line Flow Meter with 316 Stainless Steel Guide Rod, PVC Connector, No Valve - Water

High Capacity Acrylic In-Line Flow Meter with 316 Stainless Steel Guide Rod, PVC Connector, No Valve - Water