CDI Torque COMPUTORQ II Electronic Torque Wrench - Manual (Page 8)

cALIbRATION PROcEdURES
Due to the accuracy and the sensitivity of the
Computorq II electronic torque wrench, a mechanical
torque loader with a torque display (preferably
electronic) must be used for input torque. The loader is
necessary because the human hand cannot “push” or
“pull” on the wrench with enough stability for the torque
input to be an accurate value.
The calibration procedure must be done in both
directions (CW and CCW).
Please consider the following calibration precautions:
• Make sure the Computorq II is level (or horizontal
while in the loader. If not, side loading may affect the
true readings.
• Make sure the “reaction point” is in the center of the
grip or handle.
• Make sure the least amount of sockets and adapters
are used when mating to the calibration equipment.
• Check all sockets and adapters for “excessive play.”
This could result in false loads being applied and
shown on the display.
• Make sure the wrench is in the proper torque
engineering units prior to calibrating.
• Make sure the wrench mode of operation is in
“ TRACK.” Refer to the “OPERATING INSTRUCTIONS”
section for proper setup.
* Accuracy
+/-1% From 20-100% of scale.
+/-1%, plus 5 increments, from 10-20% of scale.
SPECIFICATIONS
Product Torque Length Wt.
Code Drive Range Incr. In. Lbs.
501CI-II 1/4” 5-50 in.lb. .01 in.lb. 13.5 1.5
2502CI-II 3⁄8” 25-250 in.lb. .1 in.lb. 14.9 2.0
502CF-II 3⁄8” 5-50 ft.lbs. .01 in.lb. 14.9 2.0
2503CF-II 1⁄2” 25-250 ft. lbs. .1 in.lb. 21.5 3.2
6004CF-II 3⁄4” 60-600 ft.lbs. .2 in.lb. 46.5 9.5
10005CF-II 1” 100-1000 ft.lb. .1 ft.lb. 74.0 19.0
cALIbRATION PROcEdURES
Wrenches may be set up in 7 different torque
engineering units: ft. lb., in. lb., in. oz., nm, dNm,
mkg or cmkg. Refer to “TO CHANGE UNIT OF TORQUE
MEASURE” in the “OPERATING PROCDURES”.
Factory set parameters: Transmission data rate is 1200
baud; Communication protocol is RS 232 ASCII, 8
data bit, no parity. Other options are available, please
consult factory for additional information.
Please Note: Computorq II has an exclusive feature
— when using extensions or adapters, Computorq II’s
electronics can automatically compensate for these
extra lengths. Refer to the “PROCEDURES FOR USING
ADAPTERS” section.
1
CLEAR
ZERO
dNm cmkg in-oz in-lb ft-lb
LO BAT
TRACK
PEAK
RECALL SETUP
AUTO POWER OFF
STORE
SEND
2
3 4
COMPUTORQ II
OVER o.o.o.o 000
000
6.00’ 6.00’ 6.00’
1
o.o.o.o
1
CLEAR
ZERO
STORE
SEND
2
RECALL SETUP
3 4
STORE
SEND
2
RECALL
SETUP
3
4
TRACK
ooo.o
o
TRACK
2.ooo
TRACK
ooo.o
2
2”
BATTERY
BATTERY
OFF ON
0 0 0 1
LINE FEED
CARRIAGE
RETURN
UNITS
BLANK
VALUE
SIGN
BLANK
SEQUENCE #
1 2 3 , 4 5 I N - L B
CR LF
+
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
INSTRUCTIONS LEGEND
LIGHT ON
BUZZER SOUNDS
INPUTTING THE LENGTH OF THE ADAPTOR
ACCEPTED
GO BACK TO MAIN MENU
CENTER OF SQUARE DRIVE TO
CENTER OF THE OPEN END.
BOX END OR FLARE NUT DRIVES
PRESS
PRESS + HOLD
UNITL
BUZZER SOUNDS
COMPUTORQ II shown being Calibrated
on a Mechanical Loader.