Dwyer Flow Meters

The Dwyer flow meter is a well-known brand in terms of versatility and accuracy for measuring the flow of liquids and gases in industrial, commercial, and HVAC applications. While many meter manufacturers focus on electronic solutions, Dwyer Technology has maintained a strong portfolio of mechanical flow meters that are simple and have a low-maintenance design. Many models are easy to read, feature good visual contrast, and have low enough flow rates that they are applicable not just to large systems but also suitable for small pathways like ductwork. Their variable area meters, in particular, are customer favorites for eyeing the flow with a simple peek either in a laboratory setting or in a large industrial skid or HVAC system.

Dwyer flow meters are designed to function in the real world. Most models are built with durable materials like polycarbonate, stainless steel, and corrosion-resistant plastics. They’re designed to withstand demanding conditions. Whether under pressure, in a high-temperature environment, or in fluid medium that changes viscosity when heated, these meters keep on keeping on without losing their edge in performance.

Found 1453 items
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Found 1453 items
Manufacturer
Dwyer Instruments (1453)
Component
Air And Gas Flow Meter (94)
Flow Meter (1318)
Water And Liquid Flow Meter (41)
(Instrument-Sensor) Application
Air (84)
Gas (1206)
Liquid (1215)
Non-Corrosive Gases (7)
Oil (19)
Water (17)
(Instrument-Sensor) IP Protection
IP65 (10)
IP66 (4)
(Instrument-Sensor) Measurement Accuracy
0.50 - 2% (3)
0.50% (7)
0.60% (126)
1.0% (62)
1.5% (42)
2.0% (337)
3.0% (435)
4.0% (88)
5.0% (659)
6.0% (9)
(Instrument-Sensor) NEMA Protection
NEMA 1 (35)
NEMA 4X (11)
(Instrument-Sensor) Output Signal Type
2" Scale (57)
5" Scale (42)
10" Scale (36)
(Instrument-Sensor) Size
0.5" (36)
0.25" (42)
0.125" (57)
(Instrument-Sensor) Span
.001 GPM - .01 GPM (2)
.1 GPM - 1 GPM (2)
.01 LPM - 100 CCM (2)
.1 LPM - 1000 CCM (2)
.01 SCFH - .1 SCFH (2)
.002 GPM - .024 GPM (2)
.2 GPM - 2.2 GPM (2)
.2 LPM - 2500 CCM (2)
.2 SCFH - 2 SCFH (2)
.03 LPM - 240 CCM (2)
(Instrument-Sensor) Temperature Range
-4 - 275°F/-20 - 135°C (6)
-15 - 150°F/-26 - 65°C (120)
-22 - 200°F/30 - 93°C (10)
-40 - 200°F/-40 - 93°C (43)
-50 - 200°F/-45 - 93°C (45)
14 - 140°F/-10 - 60°C (7)
32 - 122°F/0 - 50°C (42)
32-140°F/0-60°C (3)
35 - 130°F/2 - 54°C (10)
35 - 210°F/2 - 99°C (5)
(Instrument-Sensor) Type
All Fluoropolymer (14)
Coolpoint® Vortex Shedding (5)
Digital (7)
Direct Reading Glass (234)
Fixed-Orifice Flowmeter For Low Flow Rate (10)
Gas Mass (42)
Gas Turbine (15)
High Flow Glass (40)
Industrial Direct Reading (22)
Liquid Turbine (20)
(Instrument-Sensor) Type of Operator
No Valve (68)
Stainless Steel Valve (67)
Normally In Stock
Dwyer RMA-26-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMB-49-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$116.68
$97.23
Normally In Stock
Dwyer RMA-7-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer LFME-14-F2 Polycarbonate Flowmeter
Free U.S Ground shipping
$235.36
$196.13
Normally In Stock
Dwyer RMA-1-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMA-45 Water and Liquid Flow Meter
Free U.S Ground shipping
$69.50
$57.92
Normally In Stock
Dwyer RMC-143-SSV Water and Liquid Flow Meter
Free U.S Ground shipping
$282.20
$235.17
Normally In Stock
Dwyer RMB-53-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$116.68
$97.23
Normally In Stock
Dwyer RMB-55-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$116.68
$97.23
Normally In Stock
Dwyer RMA-2-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMA-8-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMC-121-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$282.20
$235.17
Normally In Stock
Dwyer RMA-3-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMA-11-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMA-12-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMB-57-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$116.68
$97.23
Normally In Stock
Dwyer RMC-101-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$282.20
$235.17
Normally In Stock
Dwyer VFA-42 Visi-Float® Acrylic Flowmeter
Free U.S Ground shipping
$59.23
$49.36
Normally In Stock
Dwyer RMC-103-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$282.20
$235.17
Normally In Stock
Dwyer RMC-145-SSV Water and Liquid Flow Meter
Free U.S Ground shipping
$282.20
$235.17
Normally In Stock
Dwyer RMA-150-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$127.25
$106.04
Normally In Stock
Dwyer RMA-21-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMA-4-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMA-25-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMA-44-SSV Water and Liquid Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMB-52-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$116.68
$97.23
Normally In Stock
Dwyer RMA-150 Air and Gas Flow Meter
Free U.S Ground shipping
$104.57
$87.14
Normally In Stock
Dwyer RMB-85D-SSV Water and Liquid Flow Meter
Free U.S Ground shipping
$116.68
$97.23
Normally In Stock
Dwyer RMB-83-SSV Water and Liquid Flow Meter
Free U.S Ground shipping
$116.68
$97.23
Normally In Stock
Dwyer RMB-84-SSV Water and Liquid Flow Meter
Free U.S Ground shipping
$116.68
$97.23
Normally In Stock
Dwyer RMC-123-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$282.20
$235.17
Normally In Stock
Dwyer RMC-141-SSV Water and Liquid Flow Meter
Free U.S Ground shipping
$282.20
$235.17
Normally In Stock
Dwyer RMC-134-SSV Water and Liquid Flow Meter
Free U.S Ground shipping
$282.20
$235.17
Normally In Stock
Dwyer RMC-135-SSV Water and Liquid Flow Meter
Free U.S Ground shipping
$282.20
$235.17
Normally In Stock
Dwyer RMC-105 Air and Gas Flow Meter
Free U.S Ground shipping
$205.60
$171.33
Normally In Stock
Dwyer RMB-85-SSV Water and Liquid Flow Meter
Free U.S Ground shipping
$116.68
$97.23
Normally In Stock
Dwyer RMB-51-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$116.68
$97.23
Normally In Stock
Dwyer RMA-14 Air and Gas Flow Meter
Free U.S Ground shipping
$69.50
$57.92
Normally In Stock
Dwyer RMA-11 Air and Gas Flow Meter
Free U.S Ground shipping
$69.50
$57.92
Normally In Stock
Dwyer RMB-56-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$116.68
$97.23
Normally In Stock
Dwyer RMA-43 Water and Liquid Flow Meter
Free U.S Ground shipping
$69.50
$57.92
Normally In Stock
Dwyer RMA-44 Water and Liquid Flow Meter
Free U.S Ground shipping
$69.50
$57.92
Normally In Stock
Dwyer RMA-1 Air and Gas Flow Meter
Free U.S Ground shipping
$69.50
$57.92
Normally In Stock
Dwyer RMA-14-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMA-24-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMA-32-SSV Water and Liquid Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMA-9-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83
Normally In Stock
Dwyer RMA-10-SSV Air and Gas Flow Meter
Free U.S Ground shipping
$92.20
$76.83

FAQs

What are Dwyer flow meters used for?

Dwyer flow meters measure the flow of liquids, gases, and air in industrial, commercial, and HVAC systems to ensure proper performance and efficiency.

What types of flow meters does Dwyer offer?

Dwyer manufactures variable area (rotameters), turbine, ultrasonic, magnetic, thermal, and differential pressure-based flow meters for a wide range of applications.

Can Dwyer flow meters measure both liquids and gases?

Many models are designed for either liquids, gases, or both—depending on the specific technology and operating conditions.

Do Dwyer flow meters offer electronic outputs?

Several models include 4–20 mA, pulse, or digital outputs for integration with PLCs, controllers, and building management systems.

Can Dwyer flow meters handle dirty or particulate-filled fluids?

Certain models are designed for contaminated fluids or compressed air with particulates, while others require clean systems—always check the spec sheet.

Mag Flow Meter Basics 

Flow meters measure the flow of a substance through a pipe. Based on the size of the pipe, the flow meter measures the volume of the substance and how fast it is moving through the pipe. 

Mag flow meters measure voltage levels of a liquid that is flowing through a pipe. The Mag flow meter is installed in line with the pipe and the diameter of the pipe should be the exact same size as the pipe carrying the liquid. Within the flow meter piping, there are two field coils located on opposite sides of each other. These field coils will generate an electromagnetic field over the entire cross section of the measuring pipe of the flow meter. Two electrodes that measure voltage are installed in the flow meter on opposite sides of the field coils. These electrodes measure any voltage present in the fluid flowing through the mag flow meter. When fluid starts to flow through the meter, the electromagnetic field will apply a force to the charged particles in the fluid. The positively and negatively charged particles begin to collect on opposite sides of the flow meter piping, forming an electrical voltage. The voltage will be directly proportional to the flow moving through the piping. The higher the voltage, the higher the flow velocity in the pipe. With this information, as well as the cross-sectional size of the pipe, the total volume of fluid that is flowing through the pipe can be calculated.