Issue #117, August 2017
Two weeks ago, our Calibration Team joined the Sporting Arms and Ammunition Manufacturer's Institute (SAAMI) for a technical seminar on pressure sensors and calibration in Depew, NY. SAAMI is an association of the Nation's leading manufacturers of firearms, ammunition, and components. Each year, we find ourselves inspired by the group of professionals who assemble to discuss sensors, calibration, and their commitment to maintaining the industry's stellar record of safety and reliability. Thank you for joining us for another month of Dynamic Sensors & Calibration Tips!
Charge Amplifier Gain Settings


One of the original sound and vibration test instruments is the variable gain charge amplifier. Charge amplifiers convert a high impedance signal from a piezoelectric sensor to low impedance voltage signals. These low impedance signals are suitable for input to a data acquisition system or oscilloscope. Charge amplifiers are still used in applications where an ICP® sensor cannot withstand high temperatures...

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Tip of the Month
Air bearing shakers dramatically improve the quality of the calibration mechanical input and the uncertainties of corresponding results compared to traditional flexure-based shakers. By minimizing or eliminating transverse motion due to lateral resonances, the air bearing design provides increased stiffness properties compared to mechanical flexures. The increased stiffness effectively shifts lateral resonances to much higher frequencies and out of the calibration response range.
Blast from the Past:
Piezoelectric Transduction Basics
Transduction System

With the school year beginning again here in the US, we bring you a classic educational piece on piezoelectric sensing, written by PCB co-founder Bob Lally. It summarizes the basics of dynamic sensing in a single page. See how much of this classic you are able to explain to your new students, young test engineering team members, or to your family for that matter. This is the one to read and recite when they ask that famous question, "What do you do at work?"...


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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!

TMS 25 Years
Sincerely,
Aaron Goosman -  Mike Dillon - Patrick Timmons - Shannon Henize

Calibration Team
The Modal Shop
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