TMS Square sensor & calibration tips
 
www.modalshop.com                        www.pcb.com                            Your one-stop sound & vibration shop
Greetings!

Welcome to issue #18-
 
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
Friendly reminder on data integrity:
 
When a sensor or measurement channel is found to be in error, all data taken with that sensor or channel is invalidated back to the last successful calibration if there is no way of definitively knowing when the damage or error occurred.  This is why on the most expensive of tests and structures, the sensors are calibrated before and IMMEDIATELY after the test, ensuring the measured data integrity.
Quick Links
 
Newsletter Archive
  
sensor & cal tips #14 -
Proficiency in calibration; Sensor considerations for NVH
 
Interpreting calibration results; Discharge time constant
 
New developments in accel cal; Introduction to industrial accels
 
sensor & cal tips #17 -
Improving your accel calibration reference measurement at low frequencies; ICP® options
 
Archived sensor & cal tips - all the back issues
Why calibrate?
 
Calibration labA good friend of mine always says, "Calibration is like getting a teenage boy to brush his teeth... They are always looking in mirrors and may comb their hair a hundred times a day, but never want to take the time in the morning to brush their teeth."  From my observations, even in the business of test and measurement, it seems that appearances get all the attention and the sound practices of calibration, verification and maintenance are often an afterthought...
 
(http://www.modalshop.com/test_calibration.asp?ID=240)
Accelerometer Selection Considerations
                                                               (written by Jim Lally)
 
PCB Short Form
There is a broad selection of charge (PE) and Integrated Circuit Piezoelectric (ICP®) accelerometers available for a wide variety of shock and vibration measurement applications. Selection criteria should include accelerometer electrical and physical specifications, performance characteristics, and environmental and operational considerations. Comparing advantages and limitations of the two systems may be helpful in selecting an accelerometer and measurement system best suited for a specific laboratory, field, factory, underwater, shipboard or airborne application.
 
(http://www.modalshop.com/filelibrary/Accelerometer_Selection_Considerations.pdf
)
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.
 
Sincerely,
Mike Lally signature
Michael J. Lally
The Modal Shop
A PCB Group Company