Good Morning All,

Yesterday I posted a message on this subject that included the statement :

"There seems to be some logic in classifying a sensor by when peak output 
is reached relative to pendulum velocity as measured against earth.   A 
strain gage mounted on the side of a flexible pendulum arm should be a 
pure acceleration measure."

Night time is great for thinking and I realized that with this sensor, 
maximum acceleration would occur at the same time as maximum 
displacement.   The sensor output could be correctly labeled either 
"displacement" or "acceleration".   Both terms would be correct so the 
choice of label would depend upon which physical property you were 
trying to use or emphasize.

Roger


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