Extech Instruments 45160 User manual

USER MANUAL
3 in 1 Humidity, Temperature and Airflow Meter
Model 45160
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Introduction
Congratulations on your purchase of the Extech Model 45160 3 in 1 Humidity,
Temperature and Airflow Meter. The dual display indicates Air Velocity and
Temperature or Humidity and Temperature.
This device is shipped fully tested and calibrated and, with proper use, will provide
years of reliable service. Please visit our website to check for the
latest version of this User Manual, Product Updates, Product Registration, and
Customer Support.
Specifications
Range Specifications
General Specifications
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Meter Description
1. LCD display
2. Keypad
3. Vane
4. Thermocouple input jack
5. %RH sensor
6. Battery compartment (rear)
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  . (Primary display temperature will only
work if a thermocouple is connected).
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MIN, MAX, Recording Function
Press the Max/Min button to begin capturing the Minimum (MN), and Maximum (MX),
values. Press 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.
As consumers, users are legally required to take used batteries to appropriate
collection sites, the retail store where the batteries were purchased, or wherever
batteries are sold. Disposal: Do not dispose of this instrument in household
waste. The user is obligated to take end of life devices to a designated collection
point for the disposal of electrical and electronic equipment.
Useful Equations
Area equations
Cubic equations
CFM (ft3/min) = Air Velocity (ft/min) x Area (ft2)
CMM (m3/min) = Air Velocity (m/sec) x Area (m2) x 60
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