αALPHA-TA120-LIGHT.
ALPHA-TA120-LIGHT
Product Overview
The Alpha-TA120-Light is a low noise, three component feedback, velocity output broadband seismometer based on an improved design by Dr. C.M. Güralp. In the 1970's and 1980's Dr. Güralp, set out the standards for miniature surface and borehole broadband seismometers.
The Broadband Feedback seismometer is based on an orthogonal three axis low noise sensor modules with double nested feedback loop topology. The suspension system is based on the principles of “elastica”. The mechanical sensor orientation is Non-Galperin with -75 dB cross axis rejection on all axis.
The ALPHA family of sensors are low noise, three components feedback velocity output Broadband seismometers suitable for local, regional and teleseismic recording.
ALPHA-TA120-LIGHT
Instrument Specifications
Suitability
- Single or large scale seismic networks
- Micro-seismic monitoring
- After-shock monitoring
- Volcanology
- Hydrocarbon exploration
- Permanent reservoir monitoring
- Induced seismicity detection
- Explosion monitoring
- Post-hole seismology
- Micro-seismic monitoring
Benefits
- High quality broadband data
- Suspension system with high cross axis rejection
- Broadband data with a high frequency response extending to 150 Hz
- Automatic self-installation and zeroing for quick installation
- Tilt tolerance of ±5 degrees
- Portable and easy to deploy
- Waterproof with connectors mated
ALPHA-TA120-LIGHT
Key Features
The sensor frequency response covers the complete seismic spectrum with a flat frequency response (no peaks) from 0.008333 Hz (120 seconds) to 150 Hz.
The sensor noise level crosses (below) the New Low Noise Model (NLNM) from 18-20 Hz to 45-50 seconds period.
Truly portable rugged seismometer with fine pitched adjustable feet manufactured from phosphor bronze.
Sensor can be operated with ±5.0 degrees of tilt, and microprocessor controlled remote centring is provided.
Remote electronic mass lock and unlock facility, with serial interface for sensor control and parametric sensor data.
Galvanically two stage isolated electronics. The sensor mechanical section and the feedback electronics sections have their own isolated and hermetically sealed enclosures.
The electronic and the mechanical sections of the sensor can be physically separated for observatory applications.
Consumes less than 1 Watt. Operates from +9VDC to +36VDC range, with input power polarity protection.
All outputs and digital inputs are transient protected.
