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Dwyer ® Series 475 Mark III Handheld Electronic Manometer is suitable for field testing, control or troubleshooting of HVAC systems, clean rooms or a wide variety of other low-pressure pneumatic devices. Series 475-FM is approved and is inherently safe for hazardous locations, Class 1, Div.1, Group A, B, C , D, T4. Its simple operation and easy-to-read digital display make it an indispensable test tool for plant engineers, industrial hygienists, and HVAC technicians. The Series 475 Mark III can also be used as an air velocity gage when used with a Dwyer ® Pitot tube.
The Series 475-FM Mark III is housed in a sturdy extruded aluminum case with a solid-state circuit board placed on a rigid fiberglass epoxy circuit board. To order to satisfy the most demanding requirements and maintain instrument reading accuracy, the 1″ w.c. the range is optimized for position sensitivity by means of a special dual sensor system. The standard 9-volt battery provides up to 100 hours of service. Two push pads on the front panel monitor on-off, auto-zero, and pressure meter selection. No configuration or leveling. The wide 0.42″ LCD display is easy to read. Units have a “small power” indicator.
Features of Dwyer ® Series 475 Mark III Handheld Electronic Manometer
- New Low Range Option 0-1.000 in. w.c.
- Measures Positive, Negative and Differential Pressures
- Rugged, Extruded Aluminum Case
- Lightweight, Fast and Easy to Use
- Selectable English/Metric Units
- FM Approved
|Measuring Parameters||Differential Pressures ; Air and compatible combustible gases|
|Range||0 to 20.00 in w.c. (0 to 4.982 )|
|Accuracy||±0.5% F.S., 60 to 78°F (15.6 to 25.6°C); ±1.5% F.S. from 32 to 60°F and 78 to 104°F (0 to 15.6°C and 25.6 to 40°C)|
|Pressure Limits||60 PSI (4.14 bar)|
|Display||0.42" (10.6 mm) 4-digit LCD|
|Operating Temperature||0 to 140°F (-17.8 to 60°C)|
|Storage Temperature||-4 to 176°F (-20 to 80°C)|
|Compensated Temperature Limits||32 to 104°F (0 to 40°C)|
|Agency Approvals||CE, FM|
|Power Requirements||9 V alkaline battery, installed non-functional, user replaceable|
|Weight||10.8 oz. (306 g)|
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