AAF International Shield Communications Module User Manual
Better Air is Our Business®
Communications Module
Real-time Reactivity Monitor
Installation, Operation, and
Maintenance Instructions
Read and Save These Instructions!
NOTE: 1. Read and understand all operating instructions before
using the SAAFShield Communications Module.
2. Save this manual for future reference.
This instruction manual provides important information on the
installation and operation of the AAF International SAAFShield
Communications Module. These instructions must be carefully
followed in order to operate the unit safely and correctly. If there are
any questions regarding the use or care of this unit, please contact
AAF at 888.AAF.2003 or by email at SAAFShield@aantl.com
for assistance.
Table of Contents
1.0 Principles of Operation
2.0 Components and Hardware
3.0 Placement of SAAFShield
4.0 Connecting to SAAFShield Detecting Unit
5.0 Connecting to 4-20 mA Output
6.0 Menu System
7.0 Programming Instructions
8.0 Data Input and Output
9.0 Local Readout
10.0 Troubleshooting
11.0 SAAFShield Parts List
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 specic 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.
Ribbon Connector
to SAAFShield® DU
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 specications can be found
in the specication.
The Communications Module portion of the SAAFShield device is used
to read, compute, and transmit corrosion, temperature and relative
humidity data.
Connector for Power
and 4-20 mA Output
LCD Screen
Ribbon Connector
to SAAFShield
®
Menu Bottons (Up, Down, OK)
RU
Figure 1. Major components of the SAAFShield® Communications Module.
2
SAAF™
Recirculation Unit
SAAF™
Pressurization and
Recirculation Unit
SAAF™ Deep
Bed Scrubber
SAAF™ Side
Access Housing
SAAFShield® Detecting Unit
Computer Room Air
Conditioning Unit
(CRAC)
Figure 2. Typical placement for SAAFShield units.
3.0 Placement of SAAFShield Monitors
When determining the reactivity of a room or space within a building,
the SAAFShield should be placed in a location representative of the air
that contacts the electronics or materials being protected. If the
protected items are spread out within the space, then an approach,
similar to a thermostat should be used. If the protected items are
concentrated in one area inside the space, then a location as close as
possible to them is preferred.
When determining the condition downstream of a gas-phase lter or
scrubber to evaluate media performance and life, the SAAFShield
should be placed after the nal particulate lter. This will protect it from
the majority of particulates and allow it to monitor the condition of the
outlet air. When the rate of corrosion begins increasing beyond what is
normal, it is time to change the media or lter.
4.0 Connecting to SAAFShield Detecting Unit
The SAAFShield Detecting Unit and Communications Module come
equipped with 26-pin ribbon cable connectors. To connect the CM to
the DU, rst remove the CM cover and locate the ribbon cable connector at the top of the CM circuit board. (Figure 3)
Figure 3.
SAAFShield
Reading Unit
(for periodic data
®
SAAFShield®
Communications Module
(for continuous
data transmission)
3
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