ALL WC-SERIES METERS ARE SHIPPED CALIBRATED, CERTIFIED, AND READY FOR USE.
Arrests are provided at 1-1/2 revolutions to avoid overstraining.
NOTE: This instrument is extremely sensitive to the force of gravity upon it.
This meter has been calibrated using free-hanging weights on a vertical axis.
THUS, READINGS FOR THIS INSTRUMENT WILL FLUCTUATE DEPENDING ON THE ANGLE AT
WHICH THE METER IS HELD.
To compensate for vertical or horizontal position: Hold instrument in position to be used. The
material should go over the center sensing roller and under the outside guide rollers.
Loosen bezel lock-screw. Turn dial to zero setting. Retighten lock-screw.
DO NOT PLACE THUMB ON THE INDICATOR SENSING BLOCK.
This instrument has a linear dial. The dial reading is a reference to
the load
applied
– not exact tension. For instance, calibrating to a specific
material,
using a 50 lb weight on a 10" wide strip of material, the dial reading
denotes a
tension of 5 pli.
If necessary to determine the exact pli tension, use the Calibration
Procedure described below. Stiffness and thickness will affect the
dial
readings; therefore, separate calibrations are necessary for each
different
stiffness and thickness, even if the material is the same.
CALIBRATION PROCEDURE:
Suspend a 10" wide strip of your material from overhead. Apply the maximum safe load for the
material (ex: 100 lbs on a 10" wide strip equals 10 pli; 50 lbs equals 5 pli, etc.). Care should be taken
when applying weight to the material.
Hold the tension meter so that one reference roller is above the other. Loosen bezel
lock-screw. Turn dial bezel to zero setting. Retighten lock-screw.
Clip the tension meter onto the loaded material. Slide the meter up and down on the material, while
carefully holding the handle completely down. Note the reading.
OPERATING INSTRUCTIONS FOR SHEET TENSION METER
WC-SERIES