Related Manuals for UEi DAFM3B
Summary of Contents for UEi DAFM3B
- Page 1 DAFM3B Digital Air Flow Meter INSTRUCTION MANUAL ENGLISH DAFM3B GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
- Page 2 TABLE OF CONTENTS Introduction ....................3 Safety ......................3 Controls and Indicators ................4 Figures and Components ................5 Operating Instructions Disable Auto Power Off ..............5 Selecting Units..................5 Basic Measurement ..............5-6 Measuring Air Volume (CFM or CMM) Entering Duct Information ..............6 Timed Average Air Volume ...............7 Estimating FREE AREA (Effective area) of a Grill ........8 Maintenance Low Battery ..................9...
-
Page 3: Introduction
INTRODUCTION The DAFM3B Anemometer/Psychrometer is designed with 6 HVAC/R parameters in one instrument. These are included in a portable, battery- operated instrument for measuring humidity, air temperature, dew point, wet bulb, air velocity and air volume. The vane probe includes sensors for velocity, temperature and humidity. -
Page 4: Controls And Indicators
CONTROLS AND INDICATORS MODE HOLD START/ STOP EXIT LW-D-AREA MAX / MIN [ HOLD TO EXIT AVG MODE] ON / OFF (SET) 1. On/Off (Setup): Press briefly to power meter on. Press and hold to turn the meter off. • Note: When the meter is OFF, press more than two seconds to enter SETUP mode. -
Page 5: Figures And Components
) to select choice • Press EXIT to return to normal operation BASIC MEASUREMENT When the DAFM3B is first powered on, air velocity is the default display. To view other parameters press “MODE” key. Each parameter will be displayed in turn. -
Page 6: Entering Duct Information
MEASURING AIR VOLUME (CFM OR CMM) Measuring air volume with the DAFM3B has two steps. The first step is to enter the characteristics of the area being measured. There are three methods to enter this and depend on the location of your measurement. -
Page 7: Timed Average Air Volume
Slowly move the probe across the entire surface of the grill or duct opening 5. Press “STOP” to end timed average. a. The cumulative timer will stop when the DAFM3B is not capturing data 6. Press MIN/MAX AVG (... -
Page 8: Estimating Free Area (Effective Area) Of A Grill
Step 3 – 40 ÷ 144 = 0.2777 square feet • Step 4 – 0.277 x 0.70 = 0.194 square feet (use this when entering free area “A” on the DAFM3B) Method 2 Measure the grill area inside the frame of the register, calculate area in square inches and convert to square feet using the method 1 steps. -
Page 9: Maintenance Low Battery
MAINTENANCE LOW BATTERY When the low battery “ ” icon appears on the display, all readings will change to “ “ to prevent inaccurate results. Change the 9V battery located in the inner compartment on the rear of the instrument. CLEANING Periodically clean your meters case using a damp cloth (not wet) only. -
Page 10: Specifications
SPECIFICATIONS: English Metric Air velocity range 99 ~ 3937 ft/min 0.5 ~ 20 m/s Air velocity resolution 0.1 ft/min 0.1 m/s Air velocity accuracy ±5% ±5% Temperature range -4 ~ 140°F -20 ~ 60°C Temperature resolution 0.1°F 0.1°C Temperature accuracy ±1˚F ±0.6˚C RH% range...
Need help?
Do you have a question about the DAFM3B and is the answer not in the manual?
Questions and answers