Dwyer 475-3-FM Handheld Digital Manometer, Intrinsically Safe, 0-200″ w.c.

Dwyer 475-3-FM Handheld Digital Manometer Overview

The Dwyer 475-3-FM is a rugged, intrinsically safe handheld digital manometer engineered for accurate pressure measurement in demanding HVAC, combustion, and industrial environments. Rated for use with air and compatible combustible gases, this instrument is purpose-built for technicians who work in potentially hazardous locations where safety-rated equipment is required.

Key Features

• Intrinsically safe design — safe for use in hazardous locations with combustible gases
• Measurement range: 0 to 200.00 inches water column (” w.c.)
• Metric range: 0 to 49.82 kPa
• Maximum allowable pressure: 30 Psig
• Compatible media: air and compatible combustible gases
• Large 4-digit LCD display with 0.042″ digit height for clear readability
• Powered by a standard 9V battery for convenient field use
• Compact handheld form factor for portability on the job

Specifications

• SKU: 475-3-FM
• Brand: Dwyer
• Measurement Range: 0 to 200.00″ w.c.
• Metric Range: 0 to 49.82 kPa
• Maximum Pressure: 30 Psig
• Display: 4-digit LCD, 0.042″ digit height
• Power Source: 9V battery
• Compatible Media: Air and compatible combustible gases
• Safety Rating: Intrinsically Safe

Applications

• HVAC system commissioning and troubleshooting
• Combustion air pressure testing
• Gas appliance pressure verification
• Duct static pressure measurement
• Hazardous location pressure diagnostics

Why Choose the Dwyer 475-3-FM?

When accuracy and safety both matter, the Dwyer 475-3-FM delivers. Its intrinsically safe certification makes it the right choice for environments where combustible gases may be present, while its wide 0–200″ w.c. range and dual-unit readout (imperial and metric) provide the versatility technicians need. The bright 4-digit LCD ensures readings are easy to capture in the field, and the standard 9V battery keeps operating costs low.