E-PAC SERIES 2100 ELECTRONIC PRECISION ACQUISITION CALIPER
THE E-PAC SERIES 2100 ELECTRONIC PRECISION ACQUISITION CALIPER IS A SADDLE TYPE ROLL MICROMETER WHICH
MEASURES AND RECORDS THE PROFILE OF A ROLL.
In the production of rolled sheet products, (metal,
paper, fiber), the outside contour or shape, defined
as the profile, of the of the work rolls is critical
for product quality.
To measure the roll profile the instrument in general
use for over 80 years has been the analog SADDLE TYPE
ROLL MICROMETER. This is a four-wheeled saddle frame,
which is set on top of a work roll and moved, or
"skated" from one end of the roll to the other. The
Saddle has a crossbar and scales that span the roll to
position a counter weight and an analog dial indicator
at the roll diameter. As the unit is skated
measurements are taken visually from the dial
indicator at approximately 18-inch intervals with
profile readings in the .001 inch range.
In the 1980s the need for higher product quality and
closer tolerances led to the use of electronic units.
The analog dial indicator was replaced by a LVDT,
(linear variable data transducer), feeding an onboard
mini computer. These units are capable of reading and
storing measurements at .1 inch intervals with
accuracy in the .0001 inch range. This data is then
down loaded and printed out in graphic form. All units
presently available use a standard saddle micrometer
with a box containing the mini computer mounted on
For 30 years Wilbar Manufacturing Company has produced
the best of these analog type saddle micrometers.
Various American manufacturers have used these units
for conversion to electronics.
In late 1998 Wilbar began a project to develop a
totally innovative roll micrometer. The concept was
for a unit designed from the ground up as an
electronic unit, not just a conversion. During
development, Harford Industries became associated with
the project and acquired the rights to it in August of
The result is the E-PAC Series 2100. The "box"
containing the data acquisition module is designed as
the saddle frame itself resulting in a compactness,
balance, and unique visual appeal. The electronics are
state of the art and are PC based, (a first), which
makes possible the manipulation and presentation of
data in a user-friendly manner. It also allows for
future up-grades such as roll diameter, surface
finish, and temperature.
Harford Industries introduced the E-PAC Series 2100
in November of 1999 as a total package that includes
the electronic roll micrometer and touch screen
computer console. The console mounts on a locking 11
gauge steel cabinet with printer shelf, inside locking
storage area, and an adjustable micrometer rest. This
package costs less than the conversion electronic
micrometers now on the market.
In August 1999 Harford Industries also acquired the
rights to Wilbar analog roll micrometers. These are
also produced and sold. Harford Industries provides
service and repair on these units.