User's Manual
Model 45158
Mini Hygro Thermo-Anemometer
Introduction
Congratulations on your purchase of Extech’s
Model 45158 Anemometer. The dual display
indicates Air Velocity and Humidity, Dew Point,
Ambient Temperature, or Temperature with
wind-chill factor. With careful use, this meter
will provide years of reliable service.
Specifications
Range Specifications
Measurement
Range
Resolution
Accuracy (% of reading)
MPH (Miles per hour)
1.1 to 62.5 MPH
0.2 MPH
± (3% + 0.4 mph)
km/hr (kilometers per hour)
1.8 to 100.6 km/h
0.7 km/h
± (3% + 1.4 km/hr)
Knots (nautical miles per hour)
1.0 to 54.3 knots
0.3 knots
± (3% + 0.6 knots)
m/sec (meters per second)
0.50 to 28.00 m/s
0.01 m/s
± (3% + 0.2 m/s)
ft/min (feet per minute)
100 to 5500 ft/min
20ft/min
± (3% + 40 ft/min)
Beaufort force
1 to 17 BF
1 BF
± 1
Temperature
0 to 122
o
F (-18 to 50
o
C) 0.1
o
F/C ±
1.8
o
F (± 1
o
C)
Relative Humidity
10 to 95%
1%
± 5% RH
Dew Point
32 to 122
o
F (0 to 50
o
C) 0.1
o
F/C ±
3.6
o
F (2
o
C)
General Specifications
Display
Dual LCD with low battery and multifunction indicators
Sensors Sapphire
bearing,
non-corrosive vane for air velocity; Precision
thermistor for temperature measurements
Average Mode
Choice of 5 or 10 reading averaging (2 second factory default)
Max and Data Hold Displays
Max recalls the highest reading; Data Hold freezes the display
Sample time
1 reading per second for air velocity and temperature
(1 reading per 15 seconds for humidity with 2 second updates)
Water-resistant
To 3’ (1m)
Operating conditions
5 to 122
o
F (-15 to 50
o
C) / < 80% RH
Power supply
Lithium battery (CR-2032 or equivalent) / 400 hour battery life
Dimensions / Weight
Instrument: 5.25 x 2.75 x 0.75” (133 x 70 x 19mm)
Vane: 1” ( 24mm ) diameter / 3 oz. ( 95 g )
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
99 Washington Street
Melrose, MA 02176
