User guide

SPECIFICATIONS
For additional product information see:
www.snapon.com/torque/techangle
Ratchet Head: square drive, 36 teeth, sealed flex
Display 4-digit LCD, torque units, CCW and battery condition flags
Sealed Key Pad
POWER - ON/OFF - auto self check - torque zero - angle reset
UP - increments torque and angle setting
DOWN - decrements torque and angle setting
UNITS mode select ( Nm, ft-lb, in-lb,
º )
Functions Set torque and angle - adjustable - audible and tactile Alert
Track - accumulated angular rotation with real time update
Peak Hold - 10 sec. flashing at torque release
Accuracy (72°F)
ANGLE: +/-1% of reading +/-1º @ angular velocity > 10º/sec < 180º/sec
TORQUE: CW CCW
(non-flexed +/-2% +/-3% of reading, 20% to 100% of full scale
ratchet head) +/-4% +/-6% of reading, 10% to 19% of full scale
+/-8% +/-10% of reading, 5% to 9% of F.S.
Preset Range
ANGLE: 5 to 360º CW or CCW (Display Resolution 1º)
TORQUE: (Display Resolution as shown below)
Model Square Drive ft-lb Nm in-lb overload (ft-lb)
ATECH2FR100 3/8 in 5.0-100.0 13.5-135.0 60-1200 125
ATECH3FR250 1/2 in 12.5-250.0 17.5-340.0 150-3000 345
Operating Temperature 5 to 42°C (40 to 110°F)
Storage Temperature -20 to 50°C (-1 to 122°F)
Measurement Drift
ANGLE: -0.12 Angular Degrees per Degree C
TORQUE: +0.01% of reading per Degree C
Humidity - up to 90% non-condensing
Dimensions - length weight
ATECH2FR100 17 in. 2.2 lbs.
ATECH3FR250 26 in. 3.7 lbs.
Battery - three "AA" Alkaline cells, up to 40 hours continuous operation.
Auto Shut-off - after 2 minutes idle
2
USE OF ADAPTORS, EXTENSIONS AND UNIVERSALS
Anytime an adaptor, extension or universal is used with a torque wrench in
such a way that the fastener distance is different than the torque wrench
square drive distance, an adjustment to the set torque is required to get proper
fastener torque.
5
Fastener torque equals
torque wrench square drive
torque. Wrench setting is
equal to desired fastener
torque.
Fastener torque equals
torque wrench square drive
torque. Wrench setting is
equal to desired fastener
torque.
Fastener torque is greater
than torque wrench square
drive torque. Calculated set-
ting will be lower than desired
fastener torque.
Fastener torque is less than
torque wrench square drive
torque. Calculated setting will
be higher than desired fas-
tener torque.
When using wobble extension
or a universal, do not exceed
more than 15 degrees of off-
set from perpendicular drive.
Do not use a long extension
with the flex-drive at full flex
.