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Dwyer 476A-0 Digital Manometer
Price: $105.00
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The Dwyer 476A series can be used to measure low pressures from -20" w.c. with ±1.5% FS accuracy.

  • Range: -20.0 - 20.0 Inches of Water
  • Maximum Pressure: 5 psig
  • Accuracy: +/- 1.5% FS @ 72 F
MFG Part# 476A-0
Dwyer 478A-0 Digital Manometer
Price: $184.00

The Dwyer 478A series can be used to measure positive, negative, or differential pressures.

  • Range: -4.00 - 4.00 Inches of Water
  • Maximum Pressure: 5 psig
  • Accuracy: +/- 1.5% FS @ 72 F
MFG Part# 478A-0
Dwyer 477AV-0 Digital Manometer
Price: $303.00

The Dwyer 477AV series is available with pressure, flow, and velocity measurements along with a number of other convenient features. The built-in air velocity and flow calculations provide accuracy and conserve time and error associated with manual calculations.

  • Range: 0 - 1.00 Inches of Water
  • Maximum Pressure: 5 psig
  • Accuracy: +/- 0.5% FS, 60 to 78 F; +\- 1.5% FS from 32 to 60 F and 78 to 104 F
MFG Part# 477AV-0
Dwyer 475-000-FM Digital Manometer
Price: $300.00

The Dwyer 475 series measures positive, negative, or differential pressures of air and natural gases.

  • Range: 0 - 1.000 Inches of Water
  • Maximum Pressure: 5 psig
  • Accuracy: +/- 0.5% FS, 60 to 78 F; +/- 1.5% FS from 32 to 60 F and 78 to 104 F
  • FM Approved
MFG Part# 475-000-FM
Dwyer 475-0-FM Digital Manometer
Price: $225.00

The Dwyer 475 series measures positive, negative, or differential pressures of air and natural gases.

  • Range: 0 - 10.00 Inches of Water
  • Maximum Pressure: 5 psig
  • Accuracy: +/- 0.5% FS, 60 to 78 F; +/- 1.5% FS from 32 to 60 F and 78 to 104 F
  • FM Approved
MFG Part# 475-0-FM
Dwyer 477AV-000 Digital Manometer
Price: $322.00

The Dwyer 477AV series is available with pressure, flow, and velocity measurements along with a number of other convenient features. The built-in air velocity and flow calculations provide accuracy and conserve time and error associated with manual calculations.

  • Range: 0 - 10.00 Inches of Water
  • Maximum Pressure: 5 psig
  • Accuracy: +/- 0.5% FS, 60 to 78 F; +\- 1.5% FS from 32 to 60 F and 78 to 104 F
MFG Part# 477AV-000
Dwyer 475-4-FM Digital Manometer
Price: $162.00

The Dwyer 475 series measures positive, negative, or differential pressures of air and natural gases.

  • Range: 0 - 10.00 PSI
  • Maximum Pressure: 30 psig
  • Accuracy: +/- 0.5% FS, 60 to 78 F; +/- 1.5% FS from 32 to 60 F and 78 to 104 F
  • FM Approved
MFG Part# 475-4-FM
Dwyer 477AV-4 Digital Manometer
Price: $196.00

The Dwyer 477AV series is available with pressure, flow, and velocity measurements along with a number of other convenient features. The built-in air velocity and flow calculations provide accuracy and conserve time and error associated with manual calculations.

  • Range: 0 - 10.00 PSI
  • Maximum Pressure: 30 psig
  • Accuracy: +/- 0.5% FS, 60 to 78 F; +\- 1.5% FS from 32 to 60 F and 78 to 104 F
MFG Part# 477AV-4
Dwyer 477B-4 Digital Manometer
Price: $442.00

The Dwyer 477B series are versatile and measure either positive, negative or differential pressures with ±0.10% of full scale accuracy.

  • Range: 0 - 10.00 PSI
  • Maximum Pressure: 30 psig
  • Accuracy: +/- 0.10% of full scale from 60 to 78 F; +\- 1% of full scale from 32 to 60 and 78 to 104 F
MFG Part# 477B-4
Dwyer 475-7-FM Digital Manometer
Price: $162.00

The Dwyer 475 series measures positive, negative, or differential pressures of air and natural gases.

  • Range: 0 - 100.0 PSI
  • Maximum Pressure: 150 psig
  • Accuracy: +/- 0.5% FS, 60 to 78 F; +/- 1.5% FS from 32 to 60 F and 78 to 104 F
  • FM Approved
MFG Part# 475-7-FM
Dwyer 477B-7 Digital Manometer
Price: $442.00

The Dwyer 477B series are versatile and measure either positive, negative or differential pressures with ±0.10% of full scale accuracy.

  • Range: 0 - 100.0 PSI
  • Maximum Pressure: 200 psig
  • Accuracy: +/- 0.10% of full scale from 60 to 78 F; +\- 1% of full scale from 32 to 60 and 78 to 104 F
MFG Part# 477B-7
Dwyer 477AV-7 Digital Manometer
Price: $196.00

The Dwyer 477AV series is available with pressure, flow, and velocity measurements along with a number of other convenient features. The built-in air velocity and flow calculations provide accuracy and conserve time and error associated with manual calculations.

  • Range: 0 - 100.00 PSI
  • Maximum Pressure: 150 psig
  • Accuracy: +/- 0.5% FS, 60 to 78 F; +\- 1.5% FS from 32 to 60 F and 78 to 104 F
MFG Part# 477AV-7