2.0 Components
Figure 1 shows the SAAFShield Detecting Unit with the internal
components labeled.
The SAAFShield Detecting Unit Real-Time Reactivity Monitor
includes the following components:
• (1) Oscillator Printed Circuit Board (PCB)
• (3) Connector slots for Quartz Crystal Microbalance (QCM)
PCBs
• (1) Black plastic thermoplastic case with airflow zones and
protective cage
• (1) Connector slot for interfacing with the SAAFShield
Reading Unit
• (3) QCM PCBs (packaged separately)
IMPORTANT:
To open the QCM PCB package prior to
installation, please carefully follow the instructions supplied
below. Mishandling the QCM PCB can cause irreparable
damage.
3.0 Installing QCM
Tools Required:
• Phillips head screwdriver
• Scissors, exacto knife, or razor blade
Instructions:
1) Ensure that the Electrostatic Discharge (ESD) protected bag
contains the appropriate QCM (Gold, Silver, Copper) that you
would like to install. See Figure 2.
2) Carefully cut open the ESD bag and remove any protective
packaging around the QCM PCB.
3) The QCM-PCB has a protective black foam backing—do not
remove this foam.
4) You will need to remove the plastic protective banding from
the QCM to expose the reactive elements on the QCM.
Carefully cut one end of the plastic protective banding as
shown in Figure 3 with a razor blade or exacto knife.
CAUTION:
In some instances, the plastic band material
may be tightly adhered to the metal cap. This is done to
provide a tight seal on the cap and ensure complete
protection of the QCM reactive element during shipment.
Please do not force open the metal cap. Doing so may
cause irreparable damage to the QCM’s reactive element
within, making the device non-operational. It is advised that
the metal cap be gently removed from the QCM and
handled carefully at all times.
2
Figure 1 – SAAFShield
™
Detecting Unit with internal components labeled
Figure 2
Figure 3
QCM PCBs
Connector slots
(connects to
QCM-PCB)
EVA foam
spacers
Outside
casing
Oscillator PCB
Cutouts
for airflow
Ribbon cable connector slot
(connects to Reading Unit)
