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2.3
SPECIFICATIONS
Model No.
Max. Operation Range (N-m)
Square Drive (inches)
Alarm Setting Range (N-m)
Length (mm)
Accuracy *1
Pre-setting No.
Bright LED
Operation Mode
Unit Selection
Head Type
Gear Teeth
Button
Battery
Battery Life *2
(Continuous operation)
Battery Life *2
(Standby)
Operating Temperature
Storage Temperature
Humidity
Drop Test
Vibration Test *3
Life time *4
Environmental test *5
Electromagnetic
compatibility test *6
* See Note:
1.
The accuracy of the readout is guaranteed from 20% to 100% of
maximum range + /- 1 increment. The torque accuracy is a
typical value. Calibration point is at the middle line of black circle
area on the rubber grip. The torque wrench must be calibrated
annually.
2.
use two AA batteries.
3.
Horizontal and vertical test.
4.
One cycle means swing the torque wrench from 0 N-m to maximum
range and back to 0 N-m.
5.
Environmental test:
a. Dry heat
b. Cold
c. Damp heat
d. Change of temperature
e. Impact (shock)
f. Vibration
g. Drop
6.
Electromagnetic compatibility test:
a. Electrostatic discharge immunity (ESD)
b. Radiated susceptibility
c. Radiated emission
STW298
200
1/2
10~200
500
CN
CW±3% CCW±4%
1 set
12 LED / 4Red + 8Green
Peak-hold/Track
N-m, in-lb, ft-lb,kg-cm
Round Head Ratchet
52
4
AA X 2
110 hrs.
1 year
-10°C~60°C
-20°C~70°C
up to 90% non-condensing
1m
10G
10000 cycle
Pass
Pass
3.
OPERATION
3.1
BEFORE USING THE WRENCH
3.1.1 Remove the battery cover.
3.1.2 Insert two AA batteries matching the -/+ polarities of the battery
to the battery compartment.
3.1.3 Put on the battery cover, aligning the arrows on the cover and
end of wrench as shown in fig.1, turn the cover clockwise to
align the second arrow.
3.1.4 Press
to power on the digital torque wrench.
3.1.5 Press
to reset the digital torque wrench before using it.
q
WARNING! If an external force is applied to the torque wrench
during power-on/reset or wake up period, an initial torque offset
will be recorded in the memory.
3.2
Activation during sleep mode
The wrench will auto sleep after 5 minutes idle for power
saving.
Press
to wake up the wrench from sleep mode.
Note: The sleep function is disabled while the unit is being calibrated
and it is set in the communication mode.
3.3
If the wrench does not function normally, press
together to reset the wrench.
3.4W
BIf the battery voltage is under 2.3 volts, the wrench will display
a battery symbol and then turn off after a short period.
LECTION
3.5
UNIT SELECTION
Pre-setting Unit: Nm
Unit Selection: in-lb
Unit Selection: ft-lb
Unit Selection: kg-cm
Note: The "Unit Selection" is in sequential order.
fig.1
Press
Press
Press
STW298
Issue No: 1 - 02/06/09
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