2
Figure 1. Major components of the SAAFShield
®
Communications Module.
2.0 Components and Hardware
• Graphic LCD
• Integrated temperature sensor and humidity sensor
• 18-30 VDC power input
• Real time G-class and S-class monitoring
• Built in real time clock and calendar chip
• 4-20 mA output for Programmable Logic Controller (PLC) interfacing
• 3-inch ribbon cable
the SAAFShield Communications Module and its main components
are shown in Figure 1.
Further details on packaging and physical specifications can be found
in the specification.
the Communications Module portion of the SAAFShield device is used
to read, compute, and transmit corrosion, temperature and relative
humidity data.
Ribbon Connector
to SAAFShield
®
DU
Ribbon Connector
to SAAFShield
®
RU
Connector for Power
and 4-20 mA Output
Menu Bottons (Up, Down, OK)
LCD Screen
1.0 Principles of Operation
the SAAFShield Communications Module in combination with the
Detecting Unit is part of the system that allows users to monitor
atmospheric corrosion in real time. this monitoring can be used to
display and trend corrosion data over time allowing users to
evaluate operational procedures, environmental factors, or other items
that occur at specific times and their impact on producing a corrosive
environment.the SAAFShield system utilizes Quartz Crystal
Microbalance (QCM) technology to measure metal corrosion due to
reactions with the environment.
