Welcome to our new website, found an issue or bug? Please report it here

Series-475
Handheld Digital Manometer for Air/Gas Pressure, 1 inH2O to 150 psid
Models In Stock
- Rugged aluminum case protects instrument from damage during transport/use
- Large, easy to read LCD and simple operation
- FM approved to be intrinsically safe in hazardous locations, Class 1, Div 2, Groups A, B, C, D, T4 Ta = 70°C
Series-475
From
$
248.50
Models In Stock

Product Overview
- Accuracy ± 0.5 %
- Accuracy Note ± 0.5% FS, 60 to 78°F (15.6 to 25.6°C); ± 1.5% FS from 32 to 60°F and 78 to 104°F (0 to 15.6°C and 25.6 to 40°C)
- Battery Size and Type Alkaline 9V
- Compensated Temperature, Max 104 °F
- Compensated Temperature, Min 32 °F
- Compliance CE, FM
- Compliance Note CE, FM approved to Class I, Div 2, Groups A, B, C, D, T4 Ta = 70°C
- Display Note 0.42˝ (10.6 mm) 4 digit LCD
- Display Type LCD
- Hysteresis ± 0.1%
- Materials, Wetted Consult Factory
- Measurement Type Pressure
- Media Compatibility Air, Argon, Butane, Combustible Gases, Compatible Gases, Methane, Nitrogen, Propane
- Number of Digits 4
- Operating Temperature, Max 140 °F
- Operating Temperature, Min 0 °F
- Pressure, Min 0 psi
- Storage Temperature, Max 176 °F
- Storage Temperature, Min -4 °F
- Supply Power Type Battery
- Weight 10.8 oz
The Series 475 Handheld Digital Manometer measures positive, negative, or differential pressures of air and natural gases in ranges from 1 in w.c. (0.249 kPa) to 150 psid (10.34 bar). The dual push pads on the front panel control the on/off, auto zero, and pressure unit selection, allowing for simple operation with no set up needed. When used with a Dwyer® Pitot tube, the Series 475 can also be used as an air velocity gage.
NIST CALIBRATION available in Product Configurator.
Product Applications
- Monitoring natural gas pressures on boilers and other combustion equipment
- Air velocity monitoring, when used with a Dwyer® Pitot tube and AV calculator
- Field calibration of other instruments
- Monitoring or troubleshooting HVAC systems