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

Water 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 Water 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 20 mL/min (0.3 GPH) to 1400 mL/min (22 GPH).
Argon 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 Argon 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 1.0 LPM (2.0 SCFH) to 40 LPM (80 SCFH).
Carbon Dioxide 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 Carbon Dioxide 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 35 LPM (80 SCFH).
Air 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 Air 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).
Nitrogen 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 Nitrogen 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 1.3 LPM (2.75 SCFH) to 45 LPM (100 SCFH).
Water 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 Water 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 20 mL/min (0.3 GPH) to 1400 mL/min (22 GPH).
Air 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 Air 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).
Argon 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 Argon 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 1.0 LPM (2.0 SCFH) to 40 LPM (80 SCFH).
Carbon Dioxide 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 Carbon Dioxide 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 35 LPM (80 SCFH).
Nitrogen 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 Nitrogen 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 1.3 LPM (2.75 SCFH) to 45 LPM (100 SCFH)
Nitrogen Flow Meters - Acrylic, Brass Fittings, No Valve

This Acrylic Flow Meter has a Dual Direct Reading Scale with yellow backing for easy viewing of Nitrogen 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 575 LPM (21 SCFM). No Valve.
Argon Flow Meters - Acrylic, Brass Fittings, No Valve

This Acrylic Flow Meter 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). No Valve.
Air Flow Meters- Acrylic, Brass Fittings, No Valve

This Acrylic Flow Meter has a Dual Direct Reading Scale with yellow backing for easy viewing of Air 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 550 LPM (20 SCFM). No Valve.
Water Flow Meters - Acrylic, Brass Fittings, No Valve

This Acrylic Flow Meter has a Dual Direct Reading Scale with yellow backing for easy viewing of H20 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 15 LPM (4 GPM). No Valve.
Carbon Dioxide Flow Meters - Acrylic, Brass Fittings, No Valve

This Acrylic Flow Meter 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 475 LPM (17 SCFM). No Valve.
H20 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 H20 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 15 LPM (4 GPM).
Air 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 Air 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 550 LPM (20 SCFM).
Nitrogen 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 Nitrogen 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 575 LPM (21 SCFM).