Cdi-torque MULTITEST Government User Manual download pdf (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.

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Cdi-torque MULTITEST Government User Manual Page 55