https://www.dekut.com/World_Business/geophones-minneapolis-minnesota-/ CSI offers a wide range of high-performance products and technology with Competitive Price. Various velocities from 1hz, 2hz, 2.5hz high sensitivity, 4.5hz, 5hz high sensitivity, 10hz, High temp and more available here. Geophones are motion transducers that convert ground movements into voltages and identifying vibration problems & respond to ground vibrations to avoid catastrophic failures. Mon, 15 Jun 2020 07:16:07 UTC en