Tellus-R is a rotational seismometer which was conceived for measuring the rotational ground motion.
Angular velocimeters are highly valued when constructing modern seismic systems which records all six components of mechanical motion.
Tellus-R has high sensitivity for the detection of rotational modes of earthquakes along with a wide dynamic and frequency range. A characteristic feature of the instrument is that it is low noise with a minimal power consumption, which is a significant advantage over electro-mechanical, fiber-optic and other types of rotational motion sensors. Tellus-R comes with a calibration input which allows periodic calibration without the use of expensive dedicated equipment.
Tellus-R comes in a hard coating anodized aluminum housing, IP67 or optionally IP68. It is well suited to harsh environments and is capable of operating at any orientation in space over a wide range of temperatures.