Items completed in the Laboratory
receive our state-of-the-art Metrology Services.
A.H. Electronics Laboratory has a
technical staff with over 160 years of experience in the
Calibration business.
Our Laboratory Calibration assures
the adequacy of measurements used in equipment testing and
assessment.
Competency and Quality in the
process are expected and necessary. Since the foundation of
measurement adequacy at Calibration Laboratories is
essential, we support and maintain these procedures in the
highest regard.
By comparing compliance or
Non-compliance Measurement results to specifications or
Requirements, includes the following:
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AS Found Status
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Instrument Returned Status
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Uncertainty Confidence Level
Coverage Factor
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Standards Used
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Traceability
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Calibration Label showing date
Calibrated, date due and by whom
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The Laboratory theme “(
Calibration & Repair is our Environment)” The
Environment
Along with the above
Processes, Calibration choice:
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International: Highly regarded
(A2LA 17025 Accredited) & (UL DQS Registered 9001: 2008)
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ANSI/NCSL Z540 (NIST)
Traceable
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Customer Agreement Calibration
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Commercial Calibration
CALIBRATION:
Calibration is the validation of
specific measurement techniques and equipment. At the
simplest level, calibration is a comparison between
measurements - one of known magnitude or correctness made or
set with one device and another measurement made in as
similar a way as possible with a second device.
The device with the known or
assigned correctness is called the standard. The second
device is the unit under test (UUT), test instrument (TI),
or any of several other names for the device being
calibrated. This process establishes the calibration of the
second device, with important limitations.
BASIC CALIBRATION PROCESS:
The calibration process begins
with the design of the measuring instrument that needs to
be calibrated. The design has to be able to “hold a
calibration” through its calibration interval. In other
words, the design has to be capable of measurements that
are “within engineering tolerance” when use within the
stated environmental conditions over some reasonable period
of time. Having a design with these characteristics the
likelihood of the actual measuring instrument performing as
expected.
The manufacturer generally assigns
the measurement tolerance, suggests a calibration interval
and specifies the environmental range of use and storage.
The using organization generally assigns the actual
calibration interval and type of calibration, which is
dependent on this specific measuring equipment’s likely
usage level.
The methods and procedures used
will influence the quality of the results. Due attention
paid, for example, to electromagnetic, dust, disturbances,
radiation, humidity, temperature, electrical supply, sound and
vibration levels., as appropriate to the technical activities
concerned. The calibration will be stopped when the
environmental conditions jeopardize the results or adversely
affect the required quality of any measurement.
In most cases the nature of the
Calibration process may preclude rigorous, metrologically and
statistically valid, calculations of uncertainty of
measurement.
This degree of rigor needed in
an estimation of uncertainty of measurement depends on the
factors such as:
The equipment and software used
for the process will be capable of achieving the accuracy
Required and comply with specifications relevant to the
Calibration to ensure that the requirements of the National
and International Standards are met.
Our Laboratory establishes
Traceability of its own Measurement Standards and support
Equipment to the SI by means of an unbroken chain of
Calibrations or comparisons linking us to relevant Primary
Standards of the SI units of Measurement.
Primary realizations of the SI
units based on fundamental Physical constants, or they may
be Secondary Standards which are Standards Calibrated by
another National Metrology Traceable Institute to
demonstrate competence and Traceability.
Reference and Traceable Materials
to the SI units of Measurement when possible are
available if needed to maintain confidence in the
Calibration status of Reference.