Extech Instruments HD350 User Manual

15 HD350-en-GB_V3.4 2/19
Temperature Specifications
Temperature Range Resolution Accuracy
o
C 0 to 50.0
o
C 0.1 ±1.5
o
C
o
F 32.0 to 122.0
o
F 0.1 ±3.0
o
F
Useful Equations
Calculating the Area for rectangular or square ducts
Rectangle: Area (A) = Height (b) x Width (a)
Circle: Area (A) = x r
2
(Where = 3.14 and r
2
= radius x radius)
Cubic equations
CFM (ft
3
/min) = Air Velocity (ft/min) x Area (ft
2
)
CMM (m
3
/min) = Air Velocity (m/sec) x Area (m
2
) x 60
NOTE: Measurements made in inches must be converted to feet or meters.
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Extech Instruments HD350 Specifications

General

Brand	Extech Instruments
Model	HD350
Category	Measuring Instruments
Language	English