The VE-53-DH sensor package is a triaxial velocity sensor designed for field or industrial survey and monitoring applications concerning vibration or explosion, such as civil engineering.

The VE-5x-DH sensor is based on a standard exploration geophone mass-spring system with electronic feedback. This type of sensor yields a very good stability under temperature changes or aging effects because of the very unsophisticated principle.

With the help of the TEST LINE the VE-5x-DH velocity sensor can be completely tested assuring proper operation.

The downhole casing contains the entire sensor system. The sensor is connected through Overvoltage Protection stage to the recorder at the surface with a cable.