Dynamic Sensors & Calibration Tips Newsletter Banner
   

Welcome to Issue #84     

 

G'day (hello in Australian) from Cincinnati, Ohio again this month. The tips of the leaves on the trees are starting to change color and nights are getting cooler. It's great sleeping weather but your friends at The Modal Shop are up early helping customers with their dynamic sensor and calibration needs. We've had another record order month across our range of calibration products, from portable vibration calibrators to laboratory workstations for vibration, pressure and even laser primary calibration. We work very hard on authoring papers, participating in standards committees, creating fun/informative newsletters and conducting our daily customer application support. We appreciate both the trust we've earned, and the positive feedback we receive from the dynamic calibration market.  
Join Our Mailing List

View our profile on LinkedIn 

 

 Follow us on Twitter

Like us on Facebook

Tip of the Month:

ISO 17025 Proficiency Testing

Moving into Quarter 4 of this year, remember that any ISO 17025-accredited providers should have already conducted annual proficiency testing, or should be scheduling it soon.

Technical Exchanges
Free half-day seminar on calibration of vibration, sound/pressure and shock by Stephen Bill & The Modal Shop, Inc.
October 1
Washington, D.C.

"Dynamic Pressure - Sensor Basics and Calibration Theory" by Patrick Timmons, The Modal Shop, Inc.
October 16
Kettering, OH

October 26-30
Reston, VA

October 28-30
Novi, MI
Quick Links
PTB 
ISO TC 108 - Mechanical vibration, shock and condition monitoring
ISO TC 108/SC 3 - Use and calibration of vibration and shock measuring instruments
ISO TC 108/SC 6 - Vibration and shock generating systems
Previous Newsletters
Potentially Confusing Uncertainty Contributors; Pressure Calibration Techniques

Uncertain About Uncertainty? Certainly!; How to Calibrate Awkwardly-Shaped Accelerometers
Select Newsletter Articles 
by Topic
PCB Group Companies
Know Your Standard: ISO 16063

In the past few months, we have written a series of articles looking at several common misinterpretations of the ISO 16063-21 standard stating methods for the calibration of vibration and shock transducers.


 

Guidelines Within Standards: Thou Shall, or Thou Should Think...?


Uncertain About Uncertainty? Certainly!


 

Potentially Confusing Uncertainty Contributors


For any reader interested in expanding and calculating their own back-to-back accelerometer calibration uncertainty budget, ISO 16063-21 can provide an excellent reference point for equations and example calculations of uncertainty contributors. Beyond back-to-back vibration, the ISO 16063 group contains... 

 

modalshop.com/calibration.asp?ID=1009
University of Buffalo Calibrates Seismic Sensors for Earthquake Simulation
By Kacey King Redmond, Marketing Communications
Watch the Earthquake Simulation Video
The University of Buffalo (UB) supports both research and commercial projects focused on structural engineering. UB purchased a low-frequency shaker and was trying to develop its own control algorithms and report processing for low-frequency calibration of seismic sensors.

UB gets most of its commercial work by word-of-mouth. Its main work is with customers who are seeking seismic certification ...

 

modalshop.com/calibration.asp?ID=1010
Blast from the Past: Improved Low-Frequency 
Accelerometer Calibration
Discussion about accelerometer calibration often refers primarily to the measurement of voltage sensitivity across a frequency range. The most common way to calibrate accelerometer sensitivity is by comparison to a reference transducer, generally another accelerometer designed to have stable low noise sensitivity in the conditions of calibration. Comparison methods are performed by back-to-back measurements, typically as a stepped sinusoid across an appropriate frequency range. The Sensor Under Test (SUT) is mounted...

 

Thanks for joining us for another issue of "Dynamic Sensors & Calibration Tips." As always, please speak up and let us know what you like. We appreciate all feedback: positive, critical or otherwise. Take care!

  

Sincerely,


Mike Lally signature
Michael J. Lally
The Modal Shop, Inc.
A PCB Group Company