Seismic Geostuff BHG-2 Triaxial Geophone
The Geostuff model BHG-2 contains 3 geophones oriented in an X-Y-Z pattern. The longitudinal geophone points toward the clamp spring. The outside diameter is 1.85 inches (47 mm), small enough to fit inside a schedule-40, 2-inch plastic pipe, but NOT A SCHEDULE 80, 2-INCH PIPE. The clamping mechanism is a robust, steel spring compressed by a DC electric motor.
Downhole cables are available in 100', 150' and 300' lengths and plug to the control box. Two control boxes may be piggy-backed so that two borehole geophones can be read from a 12-channel seismograph. A cable from the control box terminates in a standard NK-27 connector.
*(Does not include shipping or insurance)