AAF International Shield Detecting Unit - Manual

Better Air is Our Business ®
Read and Save These Instructions!
NOTE: 1. Read and understand all operating instructions before
installing and using the SAAFShield Detecting Unit
Real-time Reactivity Monitor.
2. Save this manual for future reference.
This instruction manual provides important information on the
installation and operation of the SAAFShield Detecting Unit Real-time
Reactivity Monitor. 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 [email protected] for
assistance.
Detecting Unit Real-time Reactivity Monitor
Installation, Operation, and
Maintenance Instructions
Table of Contents
1.0 Principles of Operations
2.0 Components
3.0 Installating Quartz Crystal Microbalance (QCMs)
4.0 Installing the Detecting Unit
5.0 Troubleshooting
6.0 Connecting to the Reading Unit
7.0 Spare Parts List
1.0 Principles of Operation
The SAAFShield Detecting Unit is the non-powered, sensing side
of the SAAFShield system that utilizes Quartz Crystal Microbalance
(QCM) technology to measure metal corrosion due to reactions
with the environment. The SAAFShield Detecting Unit works in
combination with the SAAFShield Reading Unit as part of a system
that monitors atmospheric corrosion in real-time or on a periodic
basis.
The SAAFShield Detecting Unit’s oscillator Printed Circuit Board
(PCB) consists of specially marked tracking where electromagnetic
induction effects are significantly reduced in order to produce the
most stable and accurate frequency reading. As the metal-coated
QCM corrodes, the frequency of oscillation changes. The Detecting
Unit has built-in non-offgassing EVA foam spacers to prevent
unwanted movement of the QCMs within the enclosure.