Profile: Apollo Research Corp. specializes in the design, development, and manufacturing of custom sensors and systems for the measurement of pressure, force and vibration. Our piezoelectric force sensor incorporates a uniquely designed quartz piezoelectric sensing element to provide a reliable, repeatable, stable output. Featuring temperature compensation, it can be used for measurement of low level transient and oscillatory forces even in the presence of high level static forces or weights. In the proper system, it can be used to make high resolution weight measurements. Pressure pulse sensor attaches to small diameter tubes as on stethoscopes. Acting as a type of microphone for acoustic sounds or pressure pulses, its electrical output signal can be fed into headphones, or to a storage medium (such as an oscilloscope or PC) for detailed study.