Universal Calibrang Machine
(UCM) Manual
(PM-5201)
Morehouse Instrument Company, Inc.
1742 Sixth Ave., York, PA 17403-2675 USA
Phone: (717) 843-0081
www.mhforce.com
Page 22
Rev. 3/2024
4.2 Compression Setup
To set up the Universal Calibrang Machine for compression calibraon:
1. Posion the reference standard, such as a Morehouse Load Cell or Morehouse Proving Ring. See pages 14-
19 for more details.
2. Posion the unit under test (see below).
Place the unit under test on the lower yoke platen. If the instrument has a tapped central hole in its base, it
should be placed using an alignment plug to assure proper posioning of the unit under test. The alignment
plug should be threaded far enough into the load cell to align, but not load on it.
Check for clearance between the adapters used to load against the top of the unit under test and the under-
side of the upper machine platen. This clearance should be approximately 1/8 inch. If the clearance is greater
than 1/8 inch, then raise the lower yoke platen as needed. Always check to be sure there is clearance between
the unit under test, its adapters, and the upper machine platen.
Figure 16: Unit Under Test with Alignment Plug
Figure 17: Unit Under Test Clearance
Cauon: Never load the unit under test directly against the underside of the upper machine platen, which may
result in high unit stress and damage the platen. Proper accessories, such as alignment bearing blocks or so
steel pads used with hardened steel bearing plates should be used to decrease the unit stress to safe levels.
Should not touch