




Dwyer Instruments 475-6-FM | Handheld digital manometer | Range 0-30.00 psi (2.069 bar) | Max. Pressure 60 psig
From 1 in w.c. (0.249 kPa) to 150 psid (10.34 bar), the Dwyer 475 portable digital manometer monitors the positive, negative, or differential pressures of air and natural gases. The pressure unit selection, auto zero, and on/off functions are controlled by the two push pads on the front panel, making operation straightforward and requiring no setup. The Series 475 can also be used as an air velocity gauge when paired with a Dwyer Pitot tube. According to FM approval, this product is fundamentally safe in Class 1, Div 2, Groups A, B, C, D, and T4 Ta = 70°C hazardous areas.

Free UAE shipping available
- Specifications
- Features
- Downloads
Accuracy | +/-0.5% Full Scale, 60 to 78°F (15.6 to 25.6°C); +/-1.5% Full Scale from 32 to 60°F and 78 to 104°F (0 to 15.6°C and 25.6 to 40°C) |
Approvals | CE, FM |
Connection | Process: Two barbed connections for use with 1/8" (3.18 mm) or 3/16" (4.76 mm) I.D. tubing. Two compression fittings for use with 1/8" (3.18 mm) I.D. x 1/4" (6.35 mm) O.D. tubing for 475-7 & 475-8 only |
Display | 0.42" (10.6 mm) 4-digit LCD |
Material | Wetted: Consult Factory |
Power | 9 V alkaline battery, installed non-functional, user replaceable |
PRESSURE | Hysteresis: +/-0.1% of Full Scale |
Temperature | Compensated Temperature Limits: 32 to 104°F (0 to 40°C) |
Temperature | Limit: 0 to 140°F (-17.8 to 60°C) |
Temperature | Storage Temperature Limits: -4 to 176°F (-20 to 80°C) |
Weight | 10.8 oz. (306 g) |
- Keeping an eye on the pressure of natural gas in boilers and other combustion equipment.
- Monitoring of air velocity using an AV calculator and a Dwyer Pitot tube.
- Calibration of additional instruments in the field.
- Keeping an eye on or debugging HVAC systems.
Related Products

Dwyer Instruments 160E-05 | Ellipsoidal tip Pitot tube | 1.22 meter insertion length

Dwyer Instruments 160E-05 | Ellipsoidal tip Pitot tube | 1.22 meter insertion length

Dwyer Instruments HTDL-30 | High temperature data logger with 24" flexible probe

Dwyer Instruments HTDL-30 | High temperature data logger with 24" flexible probe

Dwyer Instruments HTDL-20 | High temperature data logger with 2" rigid probe

Dwyer Instruments HTDL-20 | High temperature data logger with 2" rigid probe

Dwyer Instruments WTDL-20 | Temperature data logger with humidity output

Dwyer Instruments WTDL-20 | Temperature data logger with humidity output

Dwyer Instruments WTDL-30 | Temperature data logger with probe attachment

Dwyer Instruments WTDL-30 | Temperature data logger with probe attachment

Dwyer Instruments 472A-1 | Digital input thermocouple thermometer

Dwyer Instruments 472A-1 | Digital input thermocouple thermometer

Dwyer Instruments DL-8T | 8-channel temperature logger

Dwyer Instruments DL-8T | 8-channel temperature logger

Dwyer Instruments UDL-114 | Universal data logger with internal temperature and RH sensors | Four universal inputs | LCD display

Dwyer Instruments UDL-114 | Universal data logger with internal temperature and RH sensors | Four universal inputs | LCD display