Fieldpiece AAT3
In-Duct Hot-wire Anemometer & Psychrometer Accessory Head

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Fieldpiece AAT3 Shown
Product Information
Datasheet 3.2 MB PDF Datasheet
Manual 1.36 MB PDF Datasheet
PDF HelpPDF Help
  • Measures temperature and %RH
  • Calculates wet bulb and dew point
  • Slim 38" telescoping probe
  • Fast response time
  • Depth and direction indicators
  • Hands-free testing with stabilizing cone and magnetic hanger
  • Can send wireless measurements from up to 100' away
The Fieldpiece AAT3 is an In Duct Hot-Wire Anemometer & Psychrometer in one accessory head. Now HVACR professionals can measure air velocity, temperatures, and %RH all in one tool.
  • Measures temperatures, %RH, and air velocity
  • Calculates wet bulb and dew point
  • Automatically calculates Target Superheat, Target Evap Exit Temperature, and Total CFM (when using the Fieldpiece HVAC Guide System Analyzers)

HVACR pros can trust the results for tests like temperature splits, target evaporator exit temperture, target superheat, and CheckMe! because measurements are taken near the evaporator without the interference of outside air temp or leaks in the duct work.

Plus, the Fieldpiece AAT3 can make hustling from condensor, to attic, and back again to take indoor wet bulb and charge a system, a thing of the past! When attached to a wireless transmitter, the Fieldpiece AAT3 measurements can be sent wirelessly to any Fieldpiece wireless meter (HG3, LT17AW, EH4W) from anywhere on the job site. So results can be read in real-time on your wireless meter from up to 100' away.

Like all Fieldpiece products, the Fieldpiece AAT3 accessory head was engineered specifically to put the right tools in the hands of HVACR professionals. For even more convenience and time savings, Fieldpiece designed the 38" telescoping probe with laser etching so techs know the sensor is in the correct location, and is facing in the proper direction. With the quick-response sensor it's a snap to complete target superheat, and take target evaporator exit temperature tests.

Air Velocity Range: 40-3940 ft/min (0.20-20.00 m/s)
note: to use full range AAT3 must be connected to a DMM with a 4000 mVDC range or greater.
Accuracy: ± (5%+1 dgt) reading or ± (1%+1dgt)full scale
Range: 0% to 100% RH
Accuracy: ±2.5% @ 73.4°F (23°C), 10% to 90% RH
±5% @ 73.4°F (23°C), 90% RH
Sensor Response
60 seconds typical for 90% of total range
Sensor Hysteresis: ±1%RH typical
Temperature Range: -4°F to 140°F (-20°C to 60°C)
Accuracy: ±1°F: 32°F to 113°F
±2°F: -4°F to 32°F, 113°F to 140°F
±0.5°C: 0°C to 45°C
±1°C: -20°C to 0°C, 45°C to 60°C
Sensor type: Air velocity: Tiny glass bead thermistor
Relative Humidity: Capacitance polymer film
Temperature: Precision thermistor
Air Velocity: -4°F to 140°F (-20°C to 60°C)
Temperature: -4°F to 140°F (-20°C to 60°C)
Relative humidity: 32°F to 131°F (0 to 55°C)
Storage temp: -4°F to 140°F (-20°C to 60°C) <80% R.H. (Batteries removed)
Output impedance: approx. 1KΩ
0.1 x (specified accuracy) per °C (28°C) (82°F)
Battery: 9V
Battery life: 20 -35 hours typical
Battery indication: Red Low Batt LED
Auto Power off: after 15 minutes of inactivity if APO is active
Dimensions: 144mm(H) x 67mm(W) x 32mm(D)
Weight: 240g including battery
Ordering Information
Model Description Buy Online Price
AAT3  Fieldpiece AAT3 In-Duct Hot-wire Anemometer & Psychrometer Accessory Head Buy Now Sale $164.00
(Reg. $205.00)