SEISMOMETERS L-4 High-Sensitivity Seismometer The L-4 is designed specifically for scientific studies, yet has the ruggedness required for small petroleum exploration work. L-4 is available with or without calibration coils and may be obtained as a single element or as a 3D package.It is also available either in vertical or horizontal version. L-10 Digital Grade Industrial Subminiature geophone The L-10 geophone is a small rugged unit with a high output. It is packaged in a high strength Nylon case for the lowest weight specifications. L-22 Miniaturized Seismometer The L-22 unit is a miniature, low frequency, land seismometer which is available in a 2.0 Hz model.
It is a precise instrument, and maintains close frequency tolerance with tilt and temperature variation. L-22 is available as a single or 3D unit. L-28 Low distortion, Long-Travel geophone The L-28 geophone features the highest fidelity available in low-frequency velo- city type transducers. The high quality long travel geophone is available either in vertical or horizontal version. 14 Natural frequency L-4C 1 Hz L-4C 3D L-4A 2 Hz L-4A 3D Natural frequency L-10 AR 10 Hz L-10 AR 14 Hz L-10 B 4.5 Hz Natural frequency L-22 2 Hz L-22 3D Natural frequency L-28 LB 4.5 Hz