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

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

• Range: 0 - 150.0 PSI
• Maximum Pressure: 200 psig
• Accuracy: +/- 0.5% FS, 60 to 78 F; +/- 1.5% FS from 32 to 60 F and 78 to 104 F
• FM Approved

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

• Range: 0 - 20.00 Inches of Water
• Maximum Pressure: 3 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

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

• Range: 0 - 40.00 Inches of Water
• Maximum Pressure: 3 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

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

• Range: 0 - 200.0 Inches of Water
• Maximum Pressure: 15 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

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

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

• Range: 0 - 30.00 PSI
• Maximum Pressure: 60 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

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

• Range: 0 - 50.00 PSI
• Maximum Pressure: 100 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

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

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

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

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