The PT50A Industrial
edge tester is the only edge tester in the PT50 Series that is warrantied by Edge On
Up for medical, light industrial and commercial use. The PT50A includes a steel measurement platform,
our fastest processer, 1 gram of resolution and a heavy duty strain gauge sensor.
The PT50B
is the favorite of professional sharpeners, knife and scissor enthusiasts, and woodworkers
worldwide. With its 5 grams of resolution and steel measurement platform the PT50B is designed for
both endurance and accuracy.
The PT50C
was developed specifically with the home chef in mind with 25 grams of resolution. The
PT50C includes our disposable clip system for fast and easy measurements at home.
Assembly -
There is little assembly required with your PT50 Series instrument. Mount the Knife Fulcrum
with magnetic base on the round platform ring and place the test clip holder with test clip inserted (or
Test Media Fixture as pictured above if purchased) inside the platform circle. Aluminum Test Media
Fixtures come to you preloaded and ready to measure.
Battery - Two AAA batteries are already installed in your PT50
The operation of all PT50 Series Sharp
units is identical except as noted in this manual.
Disposable Clip System -
While
the EOU Disposable Clip System utilizes BESS Certified test media in its
construction, EOU test clips have not yet received full certification from BESSU. Test Clips are
manufactured by EOU and not BESSU. In their unaltered state Test Clips will generate a very reliable 20%
deviation (lower and across all measurement ranges) than the BESS Standard. To convert a Test Clip
measurement to a BESS measurement simply multiply the test clip result by (1.2). If the test media
tension is relieved in the test clip by working one leg of the clip forward and then back test clips match
BESS scores perfectly. It is this de-tensioning process and the more limited range of test clips that are
the subjects of continued discussions with BESSU. Test Clips are tensioned to meet the needs of our
medical and test laboratory customers more fully. Tensioning also makes home kitchen use more simple
and safer.
Sharp
™ determines the sharpness of edges the same way you do - by measuring the amount of force
required to cut through a medium. When a knife or other cutting edge requires the application of a
great amount of force to cut or slice through a material then you know that it is dull. In that same
manner Sharp
measures, very precisely, the force required to sever a carefully engineered standard
test media. The number displayed by the PT50 after a test is completed will be your BESS C scale score.
Please consult the graph at the end of this manual for more information on the BESS. This number
represents the number of grams of pressure required to sever the test media with your cutting edges.
The lower the number the sharper the edge. The PT50 Series displays force readings in either 1, 5 or 25
gram increments, depending on the model you have purchased, and from 0 - 2000 grams.
Your PT50 Series unit has a simple three button operation. ON/OFF, TARE/ZERO and BACKLIGHT. The
two null buttons are used at the factory for calibration purposes. After factory calibration is set you
should never need worry about additional calibration because your PT50 Series instrument re-calibrates
itself automatically upon every power-up. Just make certain that the instrument is resting on a flat and
stable surface when the instrument is powered up.
