INSTRUCTION MANUAL DAFM3 1-800-547-5740 • Fax: (503) 643-6322 www.ueitest.com • email: info@ueitest.
Introduction The DAFM3 Anemometer/Psychrometer meter is designed with 6 HVAC/R must have parameters in one instrument. These are included in a portable battery operated instrument for measuring Humidity, Air temp., Dew Point, Wet Bulb, Air Velocity and Air Volume. The sensor is built into the remote fan and is specially protected by a twist cap. While in operation, open the cap for accurate temperature and humidity readings. 2. The fan and meter are sold as a kit and are calibrated to each other.
Operating Instructions Disable Auto Power Off With the meter off, press and hold “MIN/MAX” then press and hold “ON/OFF”“ until the meter beeps. Selecting Units With the meter off press and hold the “ON/OFF” button for more than two seconds. The display will show only the units portion. Use the “UP” or “NEXT Dgt” buttons to alternate between the available scales. When the scale desired is showing press the “ENTER” button to save. The units available are Ft, in, cm.
As an example a 12” x 12” grill would equal one square foot (length x width, 1 ft x 1 ft = 1 sq foot), but with the fins of the grill in that space it may only have an effective area of 0.5 square feet or less. Grill manufactures perform testing to evaluate the effective area of a grill, and considers not only the space between the grill, but the pressure created by the air flowing against these fins.
• Area While in diameter setting mode, press the “ENTER” key for over two seconds to enter area setting. Enter the specified grill free area obtain from the manufacture using the “UP” key to increase the value of the flashing digit, and the “NEXT Dgt” key to move to the next digit. Press “ENTER” after the correct value has been selected. Air Volume: Measurement After pressing “ENTER” to exit the size mode the meter waits 20 seconds to provide time for you to put the vane up to the grill.
Specifications Temperature -4˚ to 140˚F (-20˚ to 60˚C) Accuracy: ±1˚F (+0.6˚C) Resolution: 0.1˚F (0.1˚C) Relative Humidity 0 to 100% RH Accuracy: ±3% at 10 to 60% RH ±5% at other range Dew Point Resolution: 0.1% -90˚ to 158˚F (-68˚ to 70˚C) Accuracy: ±3% at 10 to 60% RH ±5% at other range Wet Bulb Temperature Air Velocity Resolution : 0.1˚ -7.6˚ to 158˚F (-22˚ to 70˚C) Accuracy: ±3% at 10 to 60% RH ±5% at other range Resolution : 0.1˚ 0.3 to 35 m/s (1 to 114 ft/s) Accuracy: ±5% Resolution : 0.
DAFM3 Digital Air Flow Meter Limited Warranty The DAFM3 is warranted to be free from defects in materials and workmanship for a period of one year from the date of purchase. If within the warra n ty period your instrument should become inoperative from such defects, the unit will be repaired or replaced at UEi’s option.
