| Tip of the
Month |
|
Calibrating your
reference accelerometer
Metrology
labs typically recalibrate their standard reference accelerometer on
an annual basis. Often labs will own two reference standards and
offset their respective cal cycles by about 6 months, giving
redundancy in their reference standards which provides better
troubleshooting capability if concerns arise as well as allowing the
lab to continue to provide accurate, traceable calibrations even
when one of their standards is sent out for
recalibration. |
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| Modal array
accelerometer... |
|
...what makes a good one?
 There
are thousands of different models of accelerometers
available. This is due
to each measurement application having slightly different goals and
constraints, as well as different weightings as to which sensor
specifications can be compromised. There are frequency ranges,
amplitude g ranges, resolutions, packaging/connector configurations,
weight, environmental considerations, etc... With all the
combinations and permutations, how is a user to wade through the
volumes of models and feel confident in making a technically and
economically sound choice?
The short answer is application
assistance. Be
sure your chosen vendor provides knowledgeable, professional support
people who can promptly assist with your phone call, email or
request for a
visit.
Click
here for other attributes that make an accelerometer a good
modal array accelerometer.
(http://www.modalshop.com/test_calibration.asp?ID=209) |
| What is ISO 17025 all
about? |
 This
is a common question when it comes to understanding the quality
system covering the calibration of sensors, like
accelerometers.
More and more often customers are requiring dynamic test
service providers to be certified to the requirements of ISO/IEC
17025:2005 - the standard which covers the "General requirements for the competence of
testing and calibration laboratories."...
Click here to
learn more about ISO 17025.
(http://www.modalshop.com/test_calibration.asp?ID=208) |
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| As always, your
satisfaction is at the pinnacle of our work. If you have questions you
would like answered, please contact us and we'll be glad to help
out. Your question may
even be featured in a future newsletter...
Sincerely, |
|
Michael J. Lally The Modal Shop
A PCB Group Company | |
