1
RST Instruments
1 INTRODUCTION
The Model ICTS0005 Micro-Electro-Mechanical System (MEMS) Portable Tiltmeter System permits
the precise measurement of changes in tilt of engineering structures. The system consists of three
components, (1) individual Tiltmeter Monuments which are secured to the structure at points of
interest, (2) the MEMS Portable Tiltmeter which indexes the Tiltmeter Monuments in a repeatable
manner and senses the tilt via MEMS tilt sensor/s (uniaxial/biaxial), and (3) a field PC to display the
Tiltmeter data.
1.1 T
ILT
M
ONUMENT
The Tilt Monuments are precision-machined stainless steel or brass plates with 4 indexing studs
located 90 degrees apart on a 100 mm diameter circle. Each stud is numbered from 1 to 4 (see
figure 2). The Tilt Monuments are fastened to the structure of interest by methods which depend on
the material of the structure. Both stainless steel and brass materials are resistant to corrosion in
many construction environments.
1.2 MEMS
P
ORTABLE
T
ILTMETER
The MEMS Portable Tiltmeter is a precision stainless steel instrument which can be indexed
precisely and in a repeatable manner on the Tiltmeter Monument. It can be fixed in 4 positions
which together permit the tilt of the instrument to be sensed along 2 orthogonal axes with normal and
reversed readings which permit cancellation of face error. The measurement is made via a MEMS
tilt sensor/s, which converts the tilt measurement to a highly precise analog signal.
1.3 MEMS
P
ORTABLE
T
ILTMETER
R
EADOUT
The Tiltmeter is typically read via a field PC. All Readouts are configured to display the data in
engineering units of (sine
θ
).
Figure 1: MEMS Portable Tiltmeter & MEMS Portable Tiltmeter Readout
Содержание ICTS0005
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