CDI Torque MULTITEST Government - Manual (Page 55)

4-7
Using the MULTITEST Toque Calbration System
13. While holding the power tool drive perfectly in-line with
the transducer drive, reinstall the tool onto the simulator
and energize the tool until its motor stalls or, if featured,
the tool clutch slips. Be careful not to add torque by
turning the tool by hand.
14. Release the torque and note the Indicator POWER TOOL
reading.
15. CLEAR the display.
16. Repeat steps 4 through 15 in the opposite direction, if
required.
Given the variables typical of power tools and fastener
joint dynamics, a number of readings should be taken
and averaged to best determine the accuracy and
repeatability for each tool.
Measuring Force, Compression and Tension
The MULTITEST Torque Calibration system can be configured
to measure compression or tension force using MULTITEST
series torque transducers. A reaction arm is used on the
transducer to mathematically cancel the length portion of the
torque measurement leaving only the force portion for display.
Example:
The 250 ft lb transducer provides a display of up to 250
lbf (pounds force) if fixed with a one-foot long reaction
arm.
Special reaction arm and mounting fixture kits are available for
testing and calibrating the most common tension/compression
gauges and cable tensiometers.
• To avoid damage to the MULTITEST transducer, be sure it is
capable of handling the force you intend to apply.
• Only single transducers of 400 in lb and higher range are
recognized by the MULTITEST Indicator for force
measurement.
• Install the transducer by lining up the red mark with the
"FORCE" label on the loader. Refer to the 2000-600-02
Loader section of this manual.
Never attempt to use the 4-in-1 transducer for force
measurement.