2 equipment overview, 1 introduction, 2 features – Guralp Systems CMG-6TC User Manual
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Equipment Overview
2
Equipment Overview
2.1
Introduction
The CMG-6TC is an ultra-lightweight seismometer consisting of three
sensors in a sealed case, which can measure simultaneously the
North/South, East/West and vertical components of ground motion
over a wide frequency range. This
frequency response is made
possible by advanced force-
balance
feedback
electronics. It is ideally
suited
for
rapid,
temporary installations in
locations with medium
noise.
The
robust
sensor
elements are designed so
that
no
mechanical
clamping is required.
Because of this, the 6TC is
ready to record ground
movements as soon as you
provide it with power and the
processor has booted-up. The
instrument will operate with up
to 20° of tilt (if buried; up to 10°
if free-standing) but better
results will be obtained if the
base is within 3° of the horizontal
and installed on a hard surface, well
coupled to the bedrock.
Each instrument is delivered with a detailed calibration sheet showing
its serial number, measured frequency response (in both the long
period and short period sections of the seismic spectrum), sensor
output calibration figures and the instrument's transfer function,
specified in “poles and zeroes” notation.
2.2
Features
•
Compact size: 89mm x 160mm
•
True broadband, three-component, force-feedback instrument
•
Direct velocity outputs
2
Issue C - February 2015