Extech AN500 Operating Manual
USER MANUAL
Hot Wire CFM/CMM Thermo-Anemometer
Model AN500
Additional User Manual Translations available at www.extech.com
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Introduction
Thank you for selecting the Extech Hot Wire CFM/CMM Thermo-Anemometer. This instrument
measures air velocity, air flow and temperature by placing the sensor into an airway such as a duct or
a vent. The sensor is situated at the end of the telescoping wand for convenience. This device is
shipped fully tested and calibrated and, with proper use, will provide years of reliable service. Please
visit our website (www.extech.com) to check for the latest version and translations of this User Manual.
Description
Meter Description
1. Probe input jack (insert probe plug here)
2. AC adaptor jack
3. Power ON-OFF button
4. Left arrow button
5. SET button
6. UNIT button
7. MAX-MIN button
8. STORE-RECALL button
9. ZERO and Backlight button
10. Down arrow button
11. Right arrow button
12. Up arrow button
13. LCD display
Note: Battery compartment and Tilt Stand located on the back of the meter
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Push-button Description
• Power:
• C/F: Select the temperature units
• MAX/MIN: Press to Record and track the highest (MAX) and lowest (MIN) reading
• STORE: Store readings into memory
• RECALL: Display STORED readings
• UNIT: Air velocity units or airflow units of measure
• ZERO: Press to zero the display
• BACKLIGHT:
• SET: Atmospheric compensation setting or airflow parameters setting
• ◄►▲▼: Atmospheric compensation adjustment arrows (also used for general menu
navigation)
Probe Description
1. Probe Connector
2. Probe cabling
3. Telescoping sensor handle - Extends to 39” (1m)
4. Sensor opening (Air must flow through this opening against
the white dot shown on item 5 below for proper
measurement)
5. White dot air direction
6. Ergonomic handle grip
Switches the meter ON and OFF
Turn LCD backlight ON and OFF
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