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User's Guide
Visit us at www.TestEquipmentDepot.com
3-in-1 Humidity, Temperature and Airflow Meter
Model 45160
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Introduction
Congratulations on your purchase of Extech’s Model 45160 3-in-1 Humidity,
Temperature and Airflow Meter. The dual display indicates Air Velocity and Temperature
or Humidity and Temperature. With careful use, this meter will provide years of reliable
service.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
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Specifications
Range Specifications
Measurement Range Resolution Accuracy
MPH (Miles per hour) 0.9 to 67.0MPH 0.1MPH
km/hr (kilometers per hour) 1.4 to 108.0 km/h 0.1km/h
Knots (nautical miles per hour) 0.8 to 58.3 knots 0.1knots
m/sec (meters per second) 0.40 to 30.00 m/s 0.1 m/s
ft/min (feet per minute) 80 to 5910 ft/min 1ft/min
Temperature/Thermistor 32 to 122oF (-0 to 50oC) 0.1oF/C ± 2.5oF (± 1.2oC)
Temperature /Thermocouple -148 to 2372°F
-100 to 1300°C
Relative Humidity 10.0 to 95.0% 0.1% ±4% RH (from 10% to 70%RH)
General Specifications
Display 4 digit (9999 count) Dual Display LCD
Sensors Thin film capacitance humidity sensor
Min/Max Min/Max recalls the highest/lowest reading
Data Hold Data Hold freezes the display
Operating conditions 32 to 122oF (0 to 50oC) / < 80% RH
Power supply 9 Volt Battery
Dimensions / Weight Instrument: 6.14 x 2.36 x 1.29” (156 x 60 x 33mm)
Vane: 1” ( 24mm ) diameter / 3 oz. ( 95 g )
0.1°F
0.1°C
≤ 3937 ft/min: ±3% F.S.
> 3937 ft/min: ±4% F.S
±5.2% RH (> 70% RH)
± (1% + 2°F)
± (1% + 1°C)
Meter Description
1. LCD display
2. Keypad
3. Vane
4. Thermocouple input jack
5. %RH sensor
6. Battery compartment (rear)
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4
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Model 45160 Version 1.3 November 2004
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Operation
Turn Power ON
Press the power button to turn power on. The meter will perform a short self-test.
A. Airflow Measurements
1. Press the Function button to select the Anemometer function. In Air
Flow mode, the display will show Air Velocity and Temperature.
2. Press Unit button to select desired unit of measure (FPM, MPH,
KNOT, KM/H, or M/S)
B. %RH Measurements
1. Press the Function button to select %RH function. In %RH mode, the
display will show %RH and Temperature.
2. Press the °C/°F button to select the desired temperature unit of
measure.
C. Temperature Measurements
1. Press the Function button to select the Temperature function. In
Temperature mode, the display will show only temperature.
2. Plug the thermocouple into the meter's thermocouple input jack. If no
thermocouple is connected, or if the thermocouple is defective, the
meter will display “
a thermocouple is connected).
MIN, MAX, Recording Function
Press the Max/Min button to begin capturing the Minimum (MN), and Maximum (MX),
values. Press the Max/Min to view maximum and minimum recorded readings, Press and
Hold the Max/Min button until the display returns to standard operation to exit the Max/Min
function.
Data Hold
Press the HOLD button to freeze the reading in the display. The 'HOLD' icon will appear on
the upper right-hand side of the display. Press the HOLD button again to return to normal
operation (the 'HOLD' hold icon will disappear).
Auto Power OFF
The meter will automatically turn off after 10 minutes if no keys are pressed during this
period. Auto power off is disabled in the max/min recording mode.
Turning Power OFF
Press the power button to turn power off.
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“. (Primary display temperature will only work if
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Model 45160 Version 1.3 November 2004
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Useful Equations
Area equations
Cubic equations
Warranty
H
W
A = W x H
3
CFM (ft
CMM (m3/min) = Air Velocity (m/sec) x Area (m2) x 60
/min) = Air Velocity (ft/min) x Area (ft2)
R
A = pi x R
2
Support Hotline (781) 890-7440
Tech support: Ext. 200; Email: support@extech.com
Repair/Returns: Ext. 210; Email: repair@extech.com
Back to the Extech 45160 Product Info Page
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
Website: www.extech.com
Visit us at www.TestEquipmentDepot.com
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