seismic sensor

Features
Ultra high sensitivity
Ultra low-noise electronics for clear signals at sub micro-g levels
Low frequency capable
Low pass filtered to eliminate high frequencies
ESD protection
Miswiring protection
The Wilcoxon Research 731A has a noise floor very near the New High Noise Model (NHNM) developed by the U.S. Department of Interior. The ultra-quiet seismic accelerometer can measure vibration levels down to the sub micro-g range by using an ultra low noise internal amplifier and a high sensitivity inertial sensing element. It contains no moving parts, is not sensitive to magnetic fields, and has a relatively low mass.

The P31 amplifier enhances the capabilities of the 731A through special low noise signal amplification and conditioning by providing 2.4 mA constant current needed to power the accelerometer's internal amplifier.