Fieldpiece AAT3 Operator's Manual

Fieldpiece
Quick Start
1. Connect AAT3 to Fieldpiece meter.
2. Select mVDC range on meter.
In-Duct
3. Remove vinyl slip cover from the
probe tip.
Psychrometer
4. Select desired switch position on
and Air Velocity
AAT3 for temperature, %RH, or air
velocity.
Head
5. Read your measurement directly on
Model AAT3 the display of the Fieldpiece meter.
Certifications
80
In-Duct
ON
Psychrometer
& Air Velocity
AVG LO BATT
Head
ENGLISH AVG
DRY BULB
WET BULB
DEW POINT
METRIC NORMAL
ENGLISH METRIC
RH% RH%
Ft/min M/s
°F °C
A TO O
AAT3
OPERATOR'S MANUAL
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TEMPERATURE
Specifications
Range: -4°F to 140°F (-20°C to 60°C)
Operating environment:
Accuracy: ±1°F
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%
Sensor type:
R.H. (Batteries removed)
Air velocity: Tiny glass bead thermistor.
Output impedance: approx. 1KΩ
Relative Humidity: Capacitance polymer film.
Temperature coefficient: 0.1 x (specified accuracy)
Temperature: Precision thermistor.
per °C (<18°C or >28°C) (<64°F or >82°F)
Battery: 9V
AIR VELOCITY
Battery life: 20 -35 hours typical
Battery indication: Red Lo Batt LED
Range: 40-3940 ft/min (0.20-20.00 m/s)
Auto Power off: after 15 minutes of inactivity if APO
note: to use full range AAT3 must be connected to a
is active.
DMM with a 4000 mVDC range or greater.
Dimensions: 144mm(H) x 67mm(W) x 32mm(D).
Accuracy: ± (5%+1 dgt) reading or ± (1%+1dgt)
Weight: approx. 240g including battery.
full scale.
RELATIVE HUMIDITY
Range: 0% to 100% RH
Maintenance
Accuracy:
±2.5% @ 73.4°F (23°C), 10% to 90% RH Clean the exterior with a dry cloth.
±5% @ 73.4°F (23°C), <10% RH, >90% RH
Do not use liquid.
Sensor Response Time: 60 seconds typical for 90%
Battery Replacement
of total range.
Sensor Hysteresis: ±1%RH typical
When Lo Batt LED lights up replace
old battery with new 9V battery.
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
07 08
Visit us at www.TestEquipmentDepot.com
Description
Yo u r A AT 3 i s a p o r t a b l e ,
psychrometer accessory head, with a
built in hot wire anemometer.
The compact probe tip makes
directly measuring in ducts a breeze.
The 38"(96cm) telescopic probe with
laser etched ruling and flattened
edges allows you to locate proper
measurement points within a duct and
ensures that your probe is properly
aligned for air velocity measurements.
The AAT3 can measure percent
relative humidity, dry bulb, and air
velocity and can calculate wet bulb
and dew point.
C-Tick (N22675) The AAT3 snaps directly onto the
Fieldpiece HS series DMMs. For other
CE meters, use Fieldpiece ADLS2 test
leads or AHDL1 handle adapter.
WEEE Use your AAT3 with the HVAC Guide
to easily calculate in-duct CFM or
RoHS Compliant to perform Target Evaporator Exit
Temperature tests and get accuraate
Target Superheat calculations.
03
Sensor Care
When not in use it is best to protect
32°F to 113°F
this sensors with the vinyl slip cover
±2°F -4°F to 32°F, 113°F to 140°F
±0.5°C 0°C to 45°C included with the AAT3.
±1°C -20°C to 0°C, 45°C to 60°C
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.
09
How to Use
Go wireless with your AAT3 by
using Fieldpiece wireless transmitters
(ET2W/EH2W) to send measurements
General Instructions
over-the-air to Fieldpiece wireless
receivers (HG3, LT17AW, EH4W ) 1. Remove sensor cap from the telescoping
probe tip.
anywhere on the jobsite.
2. Connect directly onto any Fieldpiece
HS multimeter, data logget or the HG3 HVAC
guide. For most Fieldpiece SC and LT meters,
use Fieldpiece ADLS2 test leads plugged into
AAT3 w/ ET2W
the COM and VΩ jacks.
transmitting
3. Select mVDC range on multimeter.
wirelessly to HG3
4. Set switch position of AAT3 to °F and°C,
Ft/min and M/s, or %RH.
a.) For temperature set temp type switch
to DRY BULB, WET BULB or DEW POINT.
b.) For velocity measurements wait for 10
seconds as the AAT3 warms up.
5. Read the measurement directly on
the multimeter display.
04 05
Optional accessories
Limited Warranty
This meter is warranted against
defects in material or workmanship
for one year from date of purchase.
Fieldpiece will replace or repair the
defective unit, at its option, subject
to verification of the defect.
This warranty does not apply to
defects resulting from abuse, neglect,
accident, unauthorized repair,
alteration, or unreasonable use of
the instrument.
Any implied warranties arising
from the sale of a Fieldpiece product,
including but not limited to implied
warranties of merchantability and
fitness for a particular purpose, are
limited to the above. Fieldpiece shall
not be liable for loss of use of the
instrument or other incidental or
RCONE1 and AAT3 working with consequential damages, expenses, or
ET2W and HG3 to wirelessly log economic loss, or for any claim of such
Wetbulb for target superheat testing. damage, expenses, or economic loss.
S t a te l aws v a r y. Th e a b ove
limitations or exclusions may not
apply to you.
10 11
What is Free Area?
How Do I Get It?
Free Area is the total area through
which air can flow on either a supply
outlet or a return grille. Free area
is also some times referred to as
"effective area" or "see through area."
If there is no grille or restriction on
the area through which air is flowing
then the free area is equal to the actual
area. This would be the case if you are
performing an in-duct measurement
or if you were to remove the grille
from a supply or return.
If you are measuring airflow where
there is an obstruction present then
the free area is the total area minus
area covered by the fins or grating.
Free Area is published by grille
manufacturers and is the most
accurate representation of the Free
Area of a duct. Use manufacturer's
data whenever available.
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For Service
I n t h e U S A , c a l l Fi e l d p i e c e
Instruments for one-price-fix-all out of
warranty service pricing. Send check or
money order for the amount quoted.
Send the meter freight prepaid to
Fieldpiece Instruments. Send proof
of date and location of purchase for
in-warranty service. The meter will be
repaired or replaced, at the option of
Fieldpiece, and returned via least cost
transportation. Outside of the USA,
please visit www.fieldpiece.com for
service contact information.
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