Guralp 3TB
3T borehole system designed for borehole diameters between 99 and 203 mm
The 3T Borehole (3TB) delivers reliable and high-quality performance for long-period monitoring applications.
Product Brochure
- Covers the entire seismic spectrum with a single transfer function
- Operates in the 120 s – 50 Hz or 360 s – 50 Hz range; custom configurations are available upon request
- Hybrid velocity–acceleration response options provide an exceptional dynamic range
- Features a single-arm borehole locking mechanism for borehole diameters of 99 to 203 mm, or can be used with sand backfill to minimize convection
- Waterproof and durable design ensured by O-ring seals throughout the structure
- Includes an optional integrated inclinometer for depth position monitoring
- Operates with a tilt tolerance of up to 2.5°, optionally extendable to 12.5°
- A strain-relief mechanism fully isolates the sensors from movements in the suspension cable
