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

Welcome to issue #17-
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 low frequency ICP accelerometers

When calibrating low frequency ICP accelerometers, make certain that you allow ample time for the sensor's bias voltage to stabilize.  This may take several minutes, depending upon the specified discharge time constant of the accelerometer.
Quick Links
Newsletter Archive
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
New developments in accel cal; Introduction to industrial accels
Archived sensor & cal tips - all the back issues
Improving your accelerometer calibration reference measurement at low frequencies
Optical EncoderAccelerometer users in the structural testing field often ask about how to calibrate a sensor's performance at the low end of the frequency response curve.  Since most manufacturers start the standard factory calibration at 10 Hz, there is typically no data delivered with an accelerometer documenting its low frequency performance.  To measure this data, a supplemental low frequency calibration must be performed.
ICP options:  What's your favorite flavor?
Accelerometer familyWithin the world of ICP sensing there are some common options that can be applied to almost any typical accelerometer. Here's a quick review of the most common options.  How many of them are you familiar with?  This list contains the PCB model number prefixes and a brief description of the options.
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