General Machine Products 70046 Strand Tensionmeter - Manual (Page 6)

6
Calibration
Chart Included with each Tensionmeter is a calibration
chart registered under the same serial number as
the Tensionmeter. This chart is to be used for in-
terpreting the readings for that specific instrument
only.
No other chart should be used. No other type of
strand should be used.
The table across the top of the chart lists the com-
monly used strand sizes for which the Tension-
meter was calibrated, as well as the handle position
for each type of strand. The data in the chart indi-
cates the dial reading of the Tensionmeter corre-
sponding to the amount of strand tension in 100
pound increments for the normal tension range of
each strand size.
The chart indicates the date when the initial cali-
bration was made. If the chart is lost, the Tension-
meter must be returned for re-calibration.
Temperature
Compensation
Charts
Strand tension is affected by ambient temperature.
Generally speaking, strand tension increases as
temperature decreases due to the strand contraction
and, conversely, strand tension decreases as tem-
perature rises, due to expansion. The Strand Ten-
sionmeter will measure the actual tension at the
ambient temperature at the time of the measure-
ment. You should consult with the Outside Plant
Facilities Engineer as to the proper strand tension
for the ambient temperature at the time of meas-
urement.