Fieldpiece AAT3 In-Duct Hot Wire Anemometer & Psychrometer Head
Fieldpiece AAT3 In-duct hot wire anemometer and psychrometer accessory head
The AAT3 is a hot-wire anemometer and psychrometer combined in one accessory head. The AAT3 gets into ducts easilty with its 38" telescoping probe for measurements of air velocity, temperatures, and % RH. It also calculates wet bulb and dew point. When connected to the HG3 (either directly or through a wireless transmitter) the AAT3 provides data for automatic calculations of target superheat, target evaporator exit temperaure, and total CFM tests.
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 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, 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 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.
Features & Benefits:
- 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
- In Duct Hot-wire Anemometer/Psychrometer Accessory Head - AAT3
- Telescoping Precision Thermistor & Hot-Wire Probe
- Stabilizing Cone - RCONE
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
Temperature coefficient: 0.1 x (specified accuracy) per °C (28°C) (82°F)
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% + 1 dgt) 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 Time: 60 seconds typical for 90% of total range.
Sensor Hysteresis: ± 1 % RH typical
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.
Battery life: 20 -35 hours typical
Battery indication: Red Lo Batt LED
Auto Power off: after 15 minutes of inactivity if APO is active.
Dimensions: 144mm(H) x 67mm(W) x 32mm(D).
Weight: approx. 240g including battery.
Clean the exterior with a dry cloth. Do not use liquid.
When Lo Batt LED lights up replace old battery with new 9V battery.
When not in use it is best to protect this sensors with the vinyl slip cover included with the AAT3. Extreme conditions or exposure to solvent vapors may offset the RH% sensor. If this happens, place the sensor in a controlled envrionment of 75%RH and between 68°F - 86°F for a period of 24 hours. To create a 75%RH environment moisten a small amout of table salt, in an open container such as a clean 2 liter bottle cap.Place the container with the salt solution and the AAT3 probe in a sealable plastic bag, and leave the bag in a room temperature location where it will not be disturbed for 24 hours.
*Note: It is important that the salt solution does not come in direct contact with the sensor, as this may permenantly damage the sensor.