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PCB Piezotronics’ seismic accelerometers

Published by
World Pipelines,

PCB Piezotronics, a world leader in vibration, acoustic, pressure, force and torque sensors, offers a range of ICP(R) high sensitivity seismic accelerometers for use in ground vibration measurements.

The accelerometers are specifically designed to enable detection of ultra-low level, low frequency vibrations associated with large civil engineering structures, foundations and earth tremors. Such is their sensitivity that the accelerometers can literally detect a dropped pin.

As a result of their specific design, these sensors typically exhibit exceptional measurement resolution with a high output signal and lower noise floor. All units are hermetically sealed in a titanium or stainless steel housing with models including a 2-pin military style connector providing the added benefit of superior RF and EMI protection through electrical case isolation.

A typical example of PCB Piezotronics’ range of seismic accelerometers is model 393B31 which operates down to 0.07 Hz with a sensitivity of 10 V/g. This performance makes it ideal for use in a wide variety of civil engineering applications including remote pipeline intrusion detection, as well as bridge movement detection, military establishment intruder detection and rail movement detection.

Vibration monitoring of civil structures is an essential practice to ensure the safety of occupants and protect the structures from catastrophic demise.

Earth tremors, foot traffic, trucks and trains impart vibrations that can cause structures to sway, shift, crumble or collapse so permanent monitoring with high sensitivity accelerometers enables trending, analysis and alerts when such structural motion exceeds established safety limits. This provides information for corrective or evasive action.

Vibration measurements using PCB Piezotronics seismic accelerometers can provide data for continuous monitoring, modal analysis and structural integrity investigations. High sensitivity accelerometers generate signals in response to a wide variety of stimuli including traffic, wind and programmatic impulse. When analysed, these signals provide civil and structural engineers with insight to determine the safety of a structure and investigative analysis can lead to recommendations for remedial construction or further monitoring.

Edited from source by Stephanie Roker

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