Cooper Instruments & Systems Series M4 Digital Force Gage - Manual (Page 6)

CF 182 3 32-1117 1010
4 3 MECHANICAL SETUP
3.1 Loading shaft orientation
In order to accommodate a variety of testing requirements, the orientation of the loading shaft may be set up
in either of the two positions shown below. In order to change the loading shaft orientation, loosen the two
captive screws on the back side of the housing, separate the two housing halves, rotate one half 180
degrees, and reassemble. Contact between the two halves is made by the spring pins and contact pads on
the printed circuit boards.
3.2 Mounting to a plate
Although the gauge may be used by hand, proper mounting is important if attached to a fixture or test stand.
The round steel insert with a hole in the back of the housing is provided to withstand the load during a test. A
mating dowel pin should be used (see illustration below). Mounting plates on Cooper test stands include a
dowel pin and clearance holes for the four threaded holes located near the corners of the housing. These
holes are designed to accommodate screws in order to hold the gauge in place (Cooper test stands include a
set of thumb screws for gauge mounting). The screws must not be used for load bearing purposes. Failure
to use a dowel pin properly can result in a hazardous situation.
3.3 Mounting attachments to the gauge
The force gauge’s threaded loading shaft is designed to accommodate common grips and attachments with
female mounting holes. To mount a grip, gently thread it onto the shaft. Other mounting adapters are also
available to prevent rotation. Ensure that the grip or fixture is positioned to ensure axial load with respect to
the loading shaft of the force gauge. When using a grip, ensure that it secures the sample in such a way that
it is prevented from slipping out during a test, preventing a potential safety risk to the
5 operator and others in
the vicinity. If using a grip or fixture from a supplier other than Cooper, ensure that it is constructed of suitably
rugged materials and components.
Do not use jam nuts or tools to tighten grips or attachments onto the shaft. Finger-tighten only. Antirotation
mounting adapters are available.