CTC sensors feature all welded stainless steel construction for survival in harsh factory environments. A dual case design shields the sensing element from RFI & EMI interference. PZT ceramic sensing elements are utilized to provide the highest signal to noise ratio available, which is critical for use with data collectors, which often integrate an acceleration signal to velocity. Low frequency noise (Ski Slopes) are avoided by utilizing a sensor with a low noise PZT ceramic sensing element. Shear mode element construction is utilized in all CTC sensors, which virtually eliminates erroneous output due to thermal transient interference.