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475 Intrinsically Safe Handheld Digital Manometer

Measures positive, negative, or differential pressures of air and natural gases with a large, easy-to-read LCD

Starting At
$230.00 CAD
Normally ships in 2-3 Weeks

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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.

The 475 is also available in a convenient kit, which includes one (1) pitot tube, two (2) statis pressure tips with magnetic mounting, rubber tubing, one (1) 9 V battery, one (1) step drill, one (1) AV calculator slide rule, and a custom fitted carrying case.

• 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

Service Air and compatible combustible gases
Wetted Materials Consult factory
Accuracy 0.5% Full Scale, 60F - 78F (15.6C - 25.6C);
1.5% Full Scale from 32F - 60F and 78F - 104F (0C - 15.6C and 25.6C - 40C)
Pressure Hysteresis 0.1% of Full Scale
Pressure Limits See catalog page
Temperature Limits 0F - 140F (-17.8C - 60C)
Compensated Temperature Limits 32F - 104F (0C - 40C)
Storage Temperature Limits -4F - 176F (-20C - 80C)
Display 0.42 in (10.6 mm) 4-digit LCD
Resolution See Data Sheet
Power Requirements 9 V alkaline battery, installed non-functional, user replaceable
Weight 10.8 oz. (306 g)
Process Connections Two (2) barbed connections for use with 1/8 in (3.18 mm) or 3/16 in (4.76 mm) I.D. tubing.
Two (2) compression fittings for use with 1/8 in (3.18 mm) I.D. x 1/4 in (6.35 mm) O.D. tubing for 475-7 & 475-8 only
Agency Approvals CE, FM

• 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

A-402A Carrying Case
Tough gray nylon pouch to protect and series 477AV manometer
Normally ships in 1-2 Weeks
$75.00 CAD
UHH-C1 Soft Carrying Case
Soft carrying case for use with the UHH2 universal handheld base unit
Normally ships in 1-2 Weeks
$68.00 CAD
A-47X-BOOT Protective Magnetic Rubber Boot
Protective magnetic rubber boot for manometers (manometer not included)
Normally ships in 1-2 Weeks
$22.00 CAD