Copyright © Sigicom AB 2019
1. Introduction
1.1. INFRA Monitoring System
The traditional INFRA system is based on a model with a central data
logger unit and different types of digital sensor nodes connected to the
data logger via a digital bus cable.
The data logger collects measuring data from the nodes, stores these data
as files on a CompactFlash and also sends these files over GSM/Internet
to a data server. The data files can then be used by applications such as
INFRA Net for presentation of reports etc.
The original concept with separate data logger and sensor nodes should be
kept in mind to fully understand the various aspects of the C12 instrument
as described in this manual.
1.2. INFRA C12 Triaxial Vibration Monitor
The INFRA C12 is a complete wireless vibration monitor measuring in
three directions. It consists of a tri-axial vibration sensor, together with
measuring electronics, digital signal processing, CompactFlash, quad band
GSM/GPRS modem, antenna and batteries.
The vibration sensor is divided in three nodes named:
• C12V (vertical)
• C12L (longitudinal)
• C12T (transversal)
all with separate serial numbers.
Generated data files are sent in the same file format as used by the
traditional INFRA system, and they can be used with ordinary INFRA
applications such as INFRA Net.
The INFRA C12 concept presupposes the presence of INFRA Net to
control the instrument, because C12 has no graphical display or menu
interface.
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General