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EVISION
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ENSOR
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1
1.
Introduction
This document is the
User’s Guide to EpiSensor Model FBA ES-T,
an
external, triaxial sensor
.
Kinemetrics also produces a uniaxial EpiSensor
FBA, the FBA ES-U, and the FBA ES-SB (shallow) and FBA ES-DH
(deep) triaxial borehole packages. Kinemetrics’ strong motion
accelerographs feature a triaxial EpiSensor Altus deck.
This manual refers only to EpiSensor Model FBA ES-T
but will be referred
to simply as the
EpiSensor
throughout the rest of this manual.
Kinemetrics is committed to ensuring a successful installation. For
assistance with planning, installation, operation or maintenance, contact
Kinemetrics at the locations listed in the front of this manual. Kinemetrics
also has an extensive Services Group that can install, maintain, and analyze
the data from your EpiSensor.
This chapter provides an overview of the EpiSensor and inspection
instructions.
The EpiSensor FBA ES-T
The EpiSensor is a triaxial accelerometer optimized for earthquake
recording applications. Inside the waterproof, anodized-aluminum housing
are three orthogonally mounted low-noise EpiSensor force balance
accelerometer modules.
The EpiSensor has user-selectable full-scale recording ranges of ±4g, ±2g,
±1g, ±1/2g or ±1/4g. The EpiSensor bandwidth of DC to 200 Hz is a
significant improvement over earlier generations of sensors. The output
voltage levels are user-selectable at either ±2.5V or ±10V single-ended, or
±5V or ± 20V differential.
The EpiSensor is normally powered with a ±12V external DC power source.
It is optionally available with a 12V supply option.
Full specifications for the unit can be found in the Appendix.
