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ERICHSEN 435S附著力測(cè)試儀
Method of Operation
After checking the tight fixing of the test body at the
end of the load transmission bolt, the required force
is adjusted on the scale using the locking screw
slider. Then the Model 435 S is placed
perpendicularly onto the surface to be tested resp.
beside the applied raised coating to be tested, and is
pressed down so that the guide wheels touch the
surface. In this way the preset force acting upon the
test disc is fully effective on the test surface. The
instrument is now moved into the rolling direction the
wheels over the specimen to be tested e.g. against,
for example, scale lines.
As the diameter of the test head of Model 435 S is
considerably smaller compared with the steel disc of
Model 435, a central sector of the disc of Model 435
has been chosen as test body for reasons of space
saving. The test body is mounted on a bolt and is
preloaded by an internal helical spring to a force
adjustable from 0 to 20 N. When placing Model 435 S
with the two guide wheel perpendicularly onto the
surface, the rigidly arrested test body acts （with the
preset force） upon the surface. The test force can be
varied – as for Model 435 – by means of 3
exchangeable springs covering three different test
ranges.
