| MetroVal is an
easy automatic or manual calibration program and metrology analysis tool.
For uncertainty, prediction and interval analysis it uses extended functionality
of the Evaluator and
Predictor
programs as integrated modules. For more information, check the
attached pdf presentation.
MetroVal is used by Metrology labs to
calibrate or prepare uncertainty budgets and calibration procedures
from one central point. The Calibration
procedure looks like a simple table. It can be edited manually or generated
automatically and linked to the associated uncertainty
budget tables. This approach enables non-programmers to prepare
calibration procedures and review them in a glance.
For automated calibrations a subroutine sequencer
is used. For automated calibration VISA drivers should be installed.
If VISA is not
installed, only manual calibrations are possible. Newton
Metrology Ltd is not licensing or distributing VISA. Contact
companies such as Agilent Technologies to obtain VISA drivers. VISA allows for
calibrations using IEEE488, USB, LAN and RS232 communications with
instruments.
The procedure table is
read line by line and tells the program which modules to run, which
data to use, which methods to use to compute the uncertainties and how to
generate the calibration report. Also, it runs segments of the
command sequencer as subroutines. A calibration template is generated that facilitates
overview of the measured data. |
The uncertainty module can estimate
measurement uncertainties per ISO GUM or by Monte-Carlo simulation
directly from the measurement equation. The Prediction module can estimate
present values and uncertainties of measurement standards from their past
calibrations.
Being linked to past calibrations data,
the program can estimate and use drifts (over time or over number of
uses) as uncertainty components in
the uncertainty budgets. This has the advantage of having the
measurement standards uncertainties and deviations updated and used
in real time.
The calibration points and uncertainties
can be complex numbers.
A
simple result report editor is used to generate result table that complies
with accreditation requirements. The certificate cover page is not
generated since it is usually prepared by specific accreditation requirements using a
word processor.
Like all Newton Metrology programs,
MetroVal Complies with ISO/IEC 17025, the GUM (with supplements 1
and 2)
and ILAC G8 document for compliance with specifications.
Predictions comply with ILAC G24 / OIML D 10
Starting with version 3.0, MetroVal
includes a COM interface that enables other programs to run and use
MetroVal. However it can run also using information in an INI file. For
more info please download the pdf presentation.
|
MetroVal
program
