General Machine Products 70046 Strand Tensionmeter - Manual (Page 17)

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Locate the column on the calibration chart for the
grade and diameter of strand to be tested and note
the correct handle position. (An asterisk alongside
of the handle position number means that the ac-
cessory saddle must be used.
* See the next section
titled Accessory Saddle before proceeding.) Pull
the handle down until the bottom edge of the cam
plunger moves upward and stops at the correct po-
sition numbered on the cam case. The strand will
be deflected between the suspension hooks when
the handle engages into the detent at the correct
numbered position. Read and record the dial indi-
cator number.
IMPORTANT: The calibrated dial reads 0 to
100. The majority of recorded measurements
will be within this range and are read exactly as
the number appears on the dial. On high load
measurements, however, it is possible for the
needle to make one complete revolution past
zero. For these readings, it is necessary to add
100 to the number indicated by the needle.
Take two additional readings moving the Tension-
meter approximately 1/4" along the strand for each
reading. Read and record each dial indicator num-
ber.
Discard the high and low readings and use only the
intermediate reading as the correct value. Refer to
the calibration chart under the specific strand di-
ameter and locate the dial reading closest to the
observed reading. Move to the left column show-
ing the corresponding amount of tension in pounds
force.
* on certain older design units
Using the
Tensionmeter
(continued)