TMS Square sensor & calibration tips                                          Your one-stop sound & vibration shop

Welcome to issue #16-
If you are new to our newsletter, please enjoy this short communication, share it with a colleague and have a look at the archive links below where you'll find all the back issues with their wealth of information.  We're glad to have you on board!  
Accelerometer Temp Extremes
Tip of the Month

Calibrating Industrial Accelerometers

In many cases, like trending of machine vibration, industrial accelerometers may only need to be amplitude verified at a single frequency point.  For this simple single point calibration you should consider either a 1g hand held exciter like the PCB 699A02 or self contained single frequency source/reference/calibrator combinations like the TMS 9100C.
Quick Links
Newsletter Archive
sensor & cal tips #12 - Flight Test Accels; Random Uncertainty
sensor & cal tips #13 -
ESS Accelerometer considerations; Relative motion in calibration
sensor & cal tips #14 -
Proficiency in calibration; Sensor considerations for NVH
Interpreting calibration results; Discharge time constant
Archived sensor & cal tips - all the back issues
New developments in accelerometer calibration
Laser for accel calThis month we'll take a break from discussing world of calibration standards and interpretation of calibration data...   Here's a quick update on the latest developments in accelerometer calibration.   Considering that optical techniques are becoming more and more commonplace in the sensing industry, we have observed that they also provide some extraordinary benefits when used as references for accelerometer calibration. The Modal Shop and PCB have developed two new optical methods/systems: one for extending low frequency calibration capability... and another for further simplifying and expediting laser primary calibration.
Introduction to industrial accelerometers
IndustrialThe basics of acceleration sensing for the plant floor come from the same measurement/laboratory grade instruments we have been using for years.  However, the packaging of industrial accelerometers differs significantly from their laboratory style heritage.  At the core of an industrial style accelerometer is still a piezoelectric crystal.  Piezoelectric (PE) accelerometers have become the defacto standard for machinery and process vibration for a number of reasons...
We appreciate your interest and are glad to be providing you regular information to help with your dynamic testing and calibration needs.  If you have any questions you would like answered or have a topic you would like to see covered, please contact us and we'll be glad to help out.
Mike Lally signature
Michael J. Lally
The Modal Shop
A PCB Group Company