8
[2]
While holding down the CLEAR key, press the power ON/OFF key once. When the liquid
crystal panel displays something, stop pressing the CLEAR key.
[3]
Each push of the CLEAR key changes the time reading. (The time reading will change as
shown below.) Select an automatic reset time. If, at that time, you cannot finish the setting
within 3 seconds, repeat the procedure with step 1).
[4]
Now the automatic reset setting is over. But you have to reset the 0.0C reading manually.
Selections of the automatic reset times (in seconds)
0.0C
0.1C
0.5C
1.0C
3.0C
2.5C
2.0C
1.5C
6-2. How to take measurements
(1)
Set the “PP” mode, which measures the peak, to “MODE”, which is the measuring mode switch key,
and press the “CLEAR” key as no load is applied to the socket unit.
(2)
Plug the measuring joint to the socket of the product. Insert the screwdriver into the measuring
joint.
Each joint has a specific measurable torque range. Therefore check the torque range in which you
wish to take measurements and the torque range in which the joints can be measured.
Note Since there is an M3 screw hole at the socket side, fix the
measuring joint into
the socket with the attached knurled head screw if necessary.
(3)
Reverse the screwdriver to be measured and loosen the spring of the measuring joint.
(4)
Press the “CLEAR” key and check that 0 is displayed.
Note If 0 is not displayed, perform zero adjustment.
(5)
Turn the screwdriver to be measured in forward direction. Turn it until the screwdriver stops
automatically.
(6)
Check that the screwdriver has stopped normally. Take the torque reading on the display. The
measurement is then over.
(7)
Reverse the screwdriver again. Then loosen the measuring joint to a specified height.
(8)
Repeat the steps (4) through (7) described above to check the output torque.
If pressing the CLEAR button does not reset the torque reading, or if the button will not function, or
if the product malfunctions otherwise, press the RESET button.
Push the RESET button by inserting the tip of a pen or something else with a thin tip into the hole.
Note that pressing that button will clear all data in the memory.
Note Any measurement taken with the Torque Checker may differ from the actual
screw-tightening torque.
6-3. Handling the measuring joints
(1)
Replacing the spring
The DLT1673A comes with two kinds of springs: one for 0.15-1.5N•m (weak) and another for
0.15-6.5N•m (strong). The joints are equipped in advance with springs for 0.15-6.5N•m. Therefore
replace the joint with one for 0.15-1.5N•m when measuring low torques.
Summary of Contents for delvo DLT1173A
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