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Dwyer HVAC Manometers and Micromanometers

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421-23 421-23

0 reviews

Dwyer 421-23 - Inclined/Vertical Manometer
  • Type (Manometer): Inclined Tube
  • Max Pressure: 23 IN of H2O
  • Type of Input: N/A
  • Engineering Units (HVAC): inch H2O
  • Measurement : Differential
  • Min/Max/Hold: N/A

Your Price: $1,957.70

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421-250MM 421-250MM

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Dwyer 421-250MM - Inclined/Vertical Manometer, 0-25 mm w.c. Inclined and 30-250 mm w.c. Vertical
  • Type (Manometer): Inclined Tube
  • Max Pressure: 250 MM of H2O (4865366.07 IN of H2OWhat's This?)
  • Type of Input: N/A
  • Engineering Units (HVAC): inch H2O
  • Measurement : Differential
  • Min/Max/Hold: N/A

Your Price: $1,535.50

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421-5 421-5

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Dwyer 421-5 - Inclined/Vertical Manometer, 0-1" w.c. Inclined and 1-5" w.c. Vertical
  • Type (Manometer): Inclined Tube
  • Max Pressure: 5 IN of H2O
  • Type of Input: N/A
  • Engineering Units (HVAC): inch H2O
  • Measurement : Differential
  • Min/Max/Hold: N/A

Your Price: $1,380.80

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422-130MM 422-130MM

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Dwyer 422-130MM - Inclined/Vertical Manometer, 0-25 mm w.c. Inclined and 30-130 mm w.c. Vertical
  • Type (Manometer): Inclined Tube
  • Max Pressure: 130 MM of H2O (2529990.36 IN of H2OWhat's This?)
  • Type of Input: N/A
  • Engineering Units (HVAC): mmH2O
  • Measurement : Differential
  • Min/Max/Hold: N/A

Your Price: $1,523.60

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422-23 422-23

0 reviews

Dwyer 422-23 - Inclined/Vertical Manometer
  • Type (Manometer): Inclined Tube
  • Max Pressure: 10 IN of H2O
  • Type of Input: N/A
  • Engineering Units (HVAC): inch H2O
  • Measurement : Differential
  • Min/Max/Hold: N/A

Your Price: $2,349.35

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422-250MM 422-250MM

(1 Review)

Dwyer 422-250MM - Durablock® Inclined-Vertical Manometer, Double Column, 6-1/2" Inclined Scale, 0-25 mm w.c. Inclined and 30-250 mm w.c. Vertical
  • Type (Manometer): Inclined Tube
  • Max Pressure: 250 MM of H2O (4865366.07 IN of H2OWhat's This?)
  • Type of Input: N/A
  • Engineering Units (HVAC): mmH2O
  • Measurement : Differential
  • Min/Max/Hold: N/A

Your Price: $1,804.40

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422-5 422-5

0 reviews

Dwyer 422-5 - Inclined/Vertical Manometer, 0-1" w.c. Inclined and 1-5" w.c. Vertical
  • Type (Manometer): Inclined Tube
  • Max Pressure: 5 IN of H2O
  • Type of Input: N/A
  • Engineering Units (HVAC): inch H2O
  • Measurement : Differential
  • Min/Max/Hold: N/A

Your Price: $1,523.60

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424-10 424-10

0 reviews

Dwyer 424-10 - Inclined/Vertical Manometer
  • Type (Manometer): Inclined Tube
  • Max Pressure: 10 IN of H2O
  • Type of Input: N/A
  • Engineering Units (HVAC): inch H2O
  • Measurement : Differential
  • Min/Max/Hold: N/A

Your Price: $2,767.45

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424-132MM 424-132MM

0 reviews

Dwyer 424-132MM - Inclined/Vertical Manometer, 0-50 mm w.c. Inclined and 52-132 mm w.c. Vertical
  • Type (Manometer): Inclined Tube
  • Type of Input: N/A
  • Engineering Units (HVAC): cmH2O, mmH2O
  • Measurement : Differential
  • Min/Max/Hold: N/A
  • Pressure and Leak Test Option: N/A

Your Price: $2,266.15

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424-250MM 424-250MM

0 reviews

Dwyer 424-250MM - Inclined/Vertical Manometer Durablock Dwyer 424 Series
  • Type (Manometer): Inclined Tube
  • Type of Input: N/A
  • Engineering Units (HVAC): cmH2O, mmH2O
  • Measurement : Differential
  • Min/Max/Hold: N/A
  • Pressure and Leak Test Option: N/A

Your Price: $2,767.45

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424-5 424-5

0 reviews

Dwyer 424-5 - Inclined/Vertical Manometer
  • Type (Manometer): Inclined Tube
  • Max Pressure: 5 IN of H2O
  • Type of Input: N/A
  • Engineering Units (HVAC): inch H2O
  • Measurement : Differential
  • Min/Max/Hold: N/A

Your Price: $2,266.15

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475-000-FM 475-000-FM

0 reviews

Dwyer 475-000-FM - Handheld Digital Manometer, 0-1.000" w.c. (.2491 kPa), max. pressure 5 psig.
  • Type (Manometer): Digital
  • Max Pressure: 1 IN of H2O
  • Type of Input: N/A
  • Engineering Units (HVAC): inch H2O, kPa, psi
  • Measurement : Differential
  • Min/Max/Hold: N/A

Your Price: $432.65

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Recommended for you

HVAC Manometers and Micromanometers

Manometers are used to measure low differential pressures and used in applications such as adjusting furnace blower fan speed. Modern day digital manometers originated from the inconveniences of the U-tube manometers. U-tube manometers use a glass, U shaped, tube filled with water or other fluid of known specific gravity, such as mercury. Hoses are connected to each end. As differential pressure is applied, the fluid displaces, creating a measurable height difference between columns.

Key Features to Consider in Selecting Manometers
  • Measurement range
  • Ability to change to many different measurement units
  • Min/Max/Data Hold feature
  • Datalogging
  • Zero function for offset correction
  • Kits containing a carrying case and hoses
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