0 Item(s)

Dwyer Pressure Instruments & Measurement Tools

Transcat has the Full Line of Dwyer Instruments - Call or Order Online

Not finding what you're looking for? Call 800-828-1470 or Request a Quote today!


The distinguished heritage of Dwyer Instruments is based on quality and reliability. The company stands as a major manufacturer of competitively priced controls and instrumentation for HVAC, chemical, food, oil and gas, and other industries. Dwyer’s popular brands and diversified products include the proven Magnehelic differential pressure gauges, as well as Photohelic pressure switch/gauges and Rate Master flowmeters. Following decades of progress, Dwyer continues to move forward, continually introducing and updating its accurate instruments.

Transcat carries an impressive inventory of Dwyer models, including the top of the line series of manometers, digital pressure gauges, differential pressure controllers, flow switches, air velocity meters and more.

See All Dwyer Tools Below

Dwyer Gauge Quality with Surprising Affordability

Transcat is your source for Dwyer’s broad line of affordable Magnehelic gauges that are trusted for guaranteed accuracy within 2 percent of full scale. These shock-resistant pressure gauges quickly deliver positive, vacuum or differential pressure readings of cleanair or non-corrosive gas. They demonstrate the simplicity of the brand’s frictionless, fluid-free designs. Contractors and HVAC pros commonly rely on Magnehelic pressure solutions for:

  • Filter and blower vacuum monitoring
  • Fan pressure indication
  • Clean room positive pressure indication
  • Duct, room or building pressure measurement

The Series 4000 Capsuhelic differential pressure gauge also indicates with accuracy rapidly and is suitable for internal measurements up to 500 psig. What can a Capsuhelic do for you?

  • Read pressure, vacuum or differential pressure
  • Measure fluid flow, filter pressure drops and liquid storage tank levels
  • Provide frictionless movement, with measured pressure encapsulated
  • Support full scale readings as low as 0.5 in H2O

One Tool, All-around Functionality

Are you looking for a multifunction instrument to save you time, space, and expenses while supplying critical control functionality? Dwyer delivers devices that unite multiple control functions – and the Series 3000SGT Photohelic Switch/Gauge/Transmitter is the perfect example.

  • Connect one set of pneumatic lines versus three or four
  • Rely on the integrated Magnehelic Gauge to measure low air pressure
  • Read positive, negative or differential pressures within ±2% of full scale accuracy
  • Gain a 4-20 mA, 2-wire transmitter that operates off external power

Mastery of Switch and Meter Designs

The precision instruments from Dwyer are full-featured and reliable, and this includes the:

Rate-Master – Classified for general use, the Rate-Master Flowmeter is designed for accuracy and repeatability in compatible liquid and gas readings.

Flotect Flow Switches – These compact switches dependably monitor liquid, gas or air flow. The V6 switches are magnetically actuated, simplifying operations.

Manometers – Dwyer continues to advance its digital manometers with specialized features and highly accurate sensors. If you’re a maintenance technician, Dwyer has a manometer for capturing pressure, flow and velocity with precision accuracy.

Find the Best Dwyer Model for Your Applications

Take a look at the versatile Dwyer products we offer your industry. If you have any questions about Dwyer switches, gauges or flowmeters, use our Live Chat system on the right side of the page or call us at 800-828-1470.

Compare up to 5 Items

You have no items to compare.

List Grid

Items 1-25 of 9466

Set Ascending Direction
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  1. Dwyer Instruments 4330

    Differential Pressure Gage 15-0-15"WC

    Order #: 4330-DWYER

    Mfg #: 4330

    Ships in 1-2 weeks

    $426.00 USD

    $413.22 USD

  2. Dwyer Instruments A3015

    Photohelic Gauge,0-15"H2O

    Order #: A3015

    Mfg #: A3015

    Ships in 1-2 weeks

    $310.00 USD

    $300.70 USD

  3. Dwyer Instruments 104

    Durablock Solid Plastic Portable Gage,Vertical,0-4"H2O

    Order #: 104

    Mfg #: 104

    Ships in 1-2 weeks

    $412.00 USD

    $399.64 USD

  4. Dwyer Instruments 1430

    Portable Electronic Point Gage 0-2"wc Range w/Case

    Order #: 1430

    Mfg #: 1430

    Product is currently not available

    $1,416.00 USD

    $1,373.52 USD

  5. Dwyer Instruments SFI-700-1

    Sight Flow Indicator 1" body, 4.875" L x 2.750" H, brass

    Order #: SFI-700-1

    Mfg #: SFI-700-1

    Ships in 2-3 weeks

    $303.00 USD

    $293.91 USD

  6. Dwyer Instruments DPG-106

    Dig.Press.Gage,200PSI,1/4"NPTM, 3",316L SS,0.25%FS

    Order #: DPG-106

    Mfg #: DPG-106

    Ships in 1-2 weeks

    $195.00 USD

    $189.15 USD

  7. Dwyer Instruments DPG-103

    Dig.Press.Gage,30PSI,1/4"NPTM 3",316L SS,0.25%FS

    Order #: DPG-103

    Mfg #: DPG-103

    Ships in 1-2 weeks

    $195.00 USD

    $189.15 USD

  8. Dwyer Instruments 605-2

    Indicator Transmitter 0-2.0"w.c.,Max.Pressure 2 psi

    Order #: 605-2

    Mfg #: 605-2

    Ships in 1-2 weeks

    $258.00 USD

    $250.26 USD

  9. Dwyer Instruments A-396A

    Calibration Pump (PRESSURE)

    Order #: A-396A

    Mfg #: A-396A

    In stock

    $350.00 USD

    $339.50 USD

  10. Dwyer Instruments DPG-110

    Digitl.Press.Gage,3000PSI,0.25% FS,316L SS,1/4"NPTM

    Order #: DPG-110

    Mfg #: DPG-110

    Ships in 1-2 weeks

    $195.00 USD

    $189.15 USD

  11. Dwyer Instruments DPG-109

    Dig.Press.Gage,1000PSI,1/4"NPTM 3",316L SS,0.25%FS

    Order #: DPG-109

    Mfg #: DPG-109

    Ships in 1-2 weeks

    $195.00 USD

    $189.15 USD

  12. Dwyer Instruments A3040

    PHOTOHELIC Pressure Switch/Gage Range 0-40" w.c.

    Order #: A3040

    Mfg #: A3040

    Ships in 3-4 weeks

    $310.00 USD

    $300.70 USD

  13. Dwyer Instruments DPGW-05

    1% Digital Pressure Gauge 0 to 15 psi

    Order #: DPGW-05

    Mfg #: DPGW-05

    Ships in 1-2 weeks

    $99.00 USD

    $96.03 USD

  14. Dwyer Instruments DH3-007

    Differential Press.Controller 0-10Wc

    Order #: DH3-007

    Mfg #: DH3-007

    Ships in 1-2 weeks

    $289.00 USD

    $280.33 USD

  15. Dwyer Instruments 677B-01

    Differential Pressure Transmitter,0-.1"H2O

    Order #: 677B-01

    Mfg #: 677B-01

    Ships in 1-2 weeks

    $255.00 USD

    $247.35 USD

  16. Dwyer Instruments LPCP-2

    Low pressure calibration pump with 1/2" NPT connections.

    Order #: LPCP-2

    Mfg #: LPCP-2

    Ships in 1-2 weeks

    $1,118.00 USD

    $1,084.46 USD

  17. Dwyer Instruments V4-SS-2-U

    SS Vane Operated Flow Switch V4-SS-2-U

    Order #: V4-SS-2-U

    Mfg #: V4-SS-2-U

    Ships in 1-2 weeks

    $431.75 USD

    $418.80 USD

  18. Dwyer Instruments RMB-50-SSV

    RATE-MASTER Flowmeter,1-10 SCFH Air

    Order #: RMB-50-SSV

    Mfg #: RMB-50-SSV

    Ships in 1-2 weeks

    $58.50 USD

    $56.75 USD

  19. Dwyer Instruments THC-21

    THC Temperature/Humidity Switch C, 230 VAC

    Order #: THC-21

    Mfg #: THC-21

    Ships in 1-2 weeks

    $234.00 USD

    $226.98 USD

  20. Dwyer Instruments 641RM-12

    Air velocity transmitter, without LED display

    Order #: 641RM-12

    Mfg #: 641RM-12

    Ships in 1-2 weeks

    $450.00 USD

    $436.50 USD

  21. Dwyer Instruments DH3-003

    Differential Press.Controller 0-0.5Wc

    Order #: DH3-003

    Mfg #: DH3-003

    In stock

    $289.00 USD

    $280.33 USD

  22. Dwyer Instruments 490A-4

    Wet/Wet Digital Manometer, 0 to 100 PSI

    Order #: 490A-4

    Mfg #: 490A-4

    Ships in 1-2 weeks

    $635.00 USD

    $615.95 USD

  23. Dwyer Instruments DCT510ADC

    Low Cost Timer Controller 10 channels

    Order #: DCT510ADC

    Mfg #: DCT510ADC

    Ships in 2-3 weeks

    $147.00 USD

    $142.59 USD

  24. Dwyer Instruments PGW-156-P2

    Gas/Differential Pressure Sw. W/R ENCL,SPST NC;SPST NO (SPDT)

    Order #: PGW-156-P2

    Mfg #: PGW-156-P2

    Ships in 1-2 weeks

    $579.00 USD

    $561.63 USD

  25. Dwyer Instruments IF2716

    Indust Direct Reading Flowmeter Max. flow rate 41 GPM

    Order #: IF2716

    Mfg #: IF2716

    Ships in 1-2 weeks

    Call for Price

List Grid

Items 1-25 of 9466

Set Ascending Direction
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5