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LG Series User Manual
iNTRODUcTiON
The LG Series mechanical force gauge is ideal for a wide range of force testing applications. Based on our
popular DPP Series force gauge, the LG Series features a larger, 2.25-inch dial for improved resolution
and readability, peak hold button, ergonomic shape and improved accuracy of +0.5% of full scale. The LG
gauge is an excellent, economical solution for tensile or compression testing.
The durable, plastic housing fits naturally in the hand for a comfortable and firm grip even at maximum
loads. Gauges may be mounted to a test stand for even greater control and consistent results in
repetitive testing applications. Easy to read concentric dial measures clockwise direction only. Dial rotates
360-degrees for taring. A peak hold button captures peak readings. Available in lbf, kgf or N units of
measure. LG Series gauges come complete with protective carrying case and a set of stainless steel
attachments. A Certificate of Calibration with Data is supplied standard.
OPERATiON
The zero point of the gauge may not always be in the 12 o’clock position due to gravity effects and the
weight of fi xtures or grips on the force gauge shaft. To zero the gauge, rotate the bezel on the dial indica
-
tor so that the indicator pointer lines up with the zero on the dial face. On the lighter model force gauges (5
LBF, 2KGF, 20N or less), gently tap the gauge to overcome static friction when taking readings.
Gauges are designed for axial loading. Ensure the load is not applied at an angle or an error can be
introduced in the force readings. The gauges are designed to have a 10% tare for fi xtures and grips. If this
10% tare is exceeded, the force gauge may not measure up to full scale.
cOMPRESSiON TESTiNG
For compression testing, assemble the appropriate
attachment or grip to the bottom shaft of the force
gauge. For compression testing the shaft should
be pushed into the gauge, causing the indicator to
rotate in the clockwise direction. Attachments
should be applied “finger-tight”. Do NOT over
-
tighten.
TENSiLE TESTiNG
For tension testing, assemble the appropriate
hook, attachment or grip to the top shaft of the
force gauge. For tension testing the shaft should
be pulled out of the top of the force gauge, causing
the indicator to rotate in the clockwise direction.
Attachments should be applied “fi nger-tight”. Do
NOT overtighten.
CAUTIoN:
The LG Series is a unidirectional force gauge. When applying a load to the
instrument the dial indicator MUST rotate in the clockwise direction.
CAUTIoN:
NEVER apply a load to the LG Series force gauge so the indicator rotates in the
counterclockwise direction. If excessive loads are applied in the counterclockwise direction,
damage may occur to the force gauge.
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