Extech Instruments HD350 User Manual

14 HD350-en-GB_V3.4 2/19
Air Velocity Specifications
Air Velocity Range Resolution Accuracy
m/s (meter per second)
1 to 80.00
0.01
±2.5% of Reading
@10.00m/s
ft/min (feet per minute) 200 to 15733 1
±2.5% of Reading
@2000ft/min
km/h (kilometers per hr) 3.5 to 288.0 0.1
±2.5% of Reading
@36.0Km/h
MPH (miles per hour) 2.25 to 178.66 0.01
±2.5% of Reading
@22.37MPH
Knots (nautical mph)
2.0 to 154.6
0.1
±2.5% of Reading
@19.4Knots
Air Flow Specifications
Air Flow Range Resolution Accuracy
CFM (cubic feet per
minute)
0 to 99,999ft
3
/min 0.0001 to 100
Accuracy is a
function of Air
Velocity and duct
size
CMM (cubic meters
per minute)
0 to 99,999m
3
/min 0.001 to 100
Note: Accuracy measurements for Air velocity and Air Flow are affected by the alignment of the
Pitot tube to the flow of air in 3 axes.
Manometer Specifications
Accuracy
±0.3% F.S. (Full Scale) at 25
o
C
Repeatability
±0.2% (Max ± 0.5% F.S.)
Linearity/Hysteresis
±0.29% F.S.
Pressure Range
± 5000 Pa
Maximum Pressure
10psi
Response Time
0.5 Seconds typical
Range Indicator
Over range: Err.1; Under range: Err.2
Units Range Resolution
PSI ±0.7252 0.0001
mbar ±50.00 0.01
inH2O ±20.07 0.01
mmH2O ±509.8 0.1
Pa ±5000 1
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Extech Instruments HD350 Specifications

General

Brand	Extech Instruments
Model	HD350
Category	Measuring Instruments
Language	English