Dwyer 475 Intrinsically Safe Handheld Digital Manometer

Prices starting at:
Price $234.00
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Measures positive, negative, or differential pressures of air and natural gases in ranges from 1” WC to 150 PSID. ±0.5% full scale accuracy. Large LCD and two-button operation. FM approved intrinsically safe for Class I, Div 2, Groups A-D hazardous locations.

See model selection chart below.

The Dwyer 475 digital manometer can be used for monitoring natural gas pressures or boilers or other combustion equipment, for field calibration of other instruments, monitoring or troubleshooting HVAC systems, and when used with a Dwyer pitot tube, can be used as an air velocity gauge.

  • For air and compatible combustible gases
  • Accuracy ±0.5% full scale; Pressure hysteresis ±0.1% full scale
  • Good for temperatures 0° to 140° F
  • 0.42” four-digit LCD
  • Powered by user-replaceable 9-volt alkaline battery
  • CE, FM approvals

Model Selection Guide

Use this table to find the right model for your application.  Don't see the style or range you need? Call a Lesman sales specialist at 800-953-7626

Measuring RangeMax PressureClick for Price
and Availability
0" to 1.000" WC5 PSIG475-000-FM
0" to 4.000" WC5 PSIG475-00-FM
1" to 10.00" WC5 PSIG475-0-FM
0" to 20.00" WC10 PSIG475-1-FM
0" to 40.00" WC10 PSIG475-2-FM
0" to 200.0" WC30 PSIG475-3-FM
0 to 10.00 PSI30 PSIG475-4-FM
0 to 20.00 PSI60 PSIG475-5-FM
0 to 30.00 PSI60 PSIG475-6-FM
0 to 100.0 PSI150 PSIG475-7-FM
0 to 150.0 PSI200 PSIG475-8-FM
AccessoriesNylon Carrying Pouch A-402A
Protective Rubber Boot A-47X-BOOT
More Information
Measuring Range 1" WC to 150 PSID
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