Extech AN320 - Manuals - manualsarea.com

Page 2 - Introduction; CAUTIONS

AN320-en-GB_V1.2 11/14 2 Introduction C ongratulations on your purchase of the Extech AN320 Vane Airflow Anemometer Psychrometer + CO 2 . This instrument measures Air Velocity, Air Flow (volume), Air Temperature, Relative Humidity, Wet Bulb T...

Page 3 - Meter

AN320-en-GB_V1.2 11/14 3 Meter Description Meter Description (front) 1. Top line LCD display reading 2. Bottom line LCD display reading 3. U/mode AVG and up arrow button 4. L/mode and down arrow button 5. ON ‐ OFF (Power) and SET button ...

Page 4 - Brief

AN320-en-GB_V1.2 11/14 4 SET HOLD MAX/MIN U/mode AVG ▲ L/mode ▼ U/mode AVG ▲ U/mode AVG ▲ L/mode ▼ Brief Keypad Description Press momentarily to switch the meter ON or OFF. Press and hold this button for 2 seconds to enter or exit the Setup mode ...

Page 6 - Operation; POWER

AN320-en-GB_V1.2 11/14 6 Operation Air Velocity and Air Volume Measurements 1. Switch the meter ON by pressing the POWER button momentarily. The meter will countdown from 30 to 0 as it performs a self ‐ test. Press the POWER button...

Page 9 - Calibration

AN320-en-GB_V1.2 11/14 9 P4.0: Altitude Pressure Compensation 5. When in setup mode P4.0, press HOLD to enter the pressure compensation parameter. The LCD will show hPA (unit of measure: hector ‐ Pascal or millibar) on the lower line an...

Page 10 - Other

AN320-en-GB_V1.2 11/14 10 Battery Replacement When appears on the LCD, the AAA batteries must be replaced. The battery cover is located on the back of the meter. 1. Open the rear battery compartment by carefully pulling down ...

Page 11 - Specifications; or

AN320-en-GB_V1.2 11/14 11 Specifications Air Velocity Ranges Resolution Accuracy m/s (meters per sec) 0.2 – 30 m/s 0.01 m/s ± (1.5%rdg + 0.3 m/s) fpm (feet per minute) 40 – 5900 fpm 1 fpm ± (1.5% rdg + 59 fpm) Relative Humid...

Page 13 - display

AN320-en-GB_V1.2 11/14 13 Error Messages Error codes and solutions Air Temperature E02 : Temperature reading is lower than the low range limit. Place the meter in room temperature for 30 minutes. If E02 continues, send the unit to ...

Page 14 - knots

AN320-en-GB_V1.2 11/14 14 Appendix: Useful Equations and Conversions Area equation for rectangular or square ducts Area equation for circular ducts Cubic equations NOTE: Measurements made in i...