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b. The Department of the Army assigned responsibility for establishing
and maintaining the Army calibration and repair system to the US Army
Materiel Development and Readiness Command (DARCOM). The direction of the
program has been delegated through the US Army Missile Command (MICOM) to
the Army Metrology and Calibration Center (AMCC), Redstone Arsenal. It is
within this command structure that the who, where, how, and why of the Army
calibration and repair system will be found.
2.
CALIBRATION TERMINOLOGY.
Before proceeding further into this
discussion, it is desirable to pause and consider the terminology that will
be used in the succeeding pages. Familiarity with the following terms and
definitions will insure clarity and understanding of the discussion.
a. Calibration. Intercomparison of items, one of which is a certified
standard of known accuracy, to detect and/or adjust any variation in the
accuracy of the item being calibrated.
b. Calibration correction chart.
A chart or graph prepared for
specific test and measuring equipment to show the correction that must be
applied to the indicated reading to obtain the actual value of the parameter
being measured.
c. Calibration facility. That part or adjunct of an installation that
provides calibration services.
d. Calibration itinerary. An operation wherein certified standards are
transported to one or more locations for the purpose of certifying the
accuracy of reference standards or test equipment and then are returned to
their points of origin.
e. Certification.
The action taken by a responsible
calibration
facility to attest to the accuracy of a calibrated item.
f. Cross check. A functional comparison between instruments to verify
that no significant departure from assigned tolerance has occurred (Ref TB
9-4931-402-50).
g. Minor repair on a limited basis.
Repair that consists of direct
replacement of plug-in type components (tubes, fuses, etc) and replacement
of other types of components (resistors and capacitors) when the defective
component is obvious, replacement parts are immediately available, and
effecting these repairs will not jeopardize the calibration team schedule.
h. Repair.
That action taken to the restore an item of equipment to
its original operational status through replacement of plug-in boards,
components, or cabling.
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