INFICON RQCM - Quartz Crystal Microbalance Research System - Manual (Page 48)

RQCM – RESEARCH QUARTZ CRYSTAL MICROBALANCE
CRYSTALS, HOLDERS AND FLOW CELL
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10
4.3 CRYSTAL HOLDERS
Figure 12 shows a INFICON CHC-100 Crystal Holder (without a crystal, the crystal retainer or the
retainer cover). It has a cavity for a 1-inch diameter crystal. Inside the cavity there are two
Pogo® pins providing connections to the crystal’s front and rear electrodes. Note the locations of
the Pogo® pins. These pins are internally connected to the BNC connector (SMB Jack for CHT-
100 and CHK-100 holders) via an internal coaxial cable.
Figure 12 CHC-100 Crystal Holder
4.3.1 HOW TO INSTALL A CRYSTAL IN A INFICON CRYSTAL HOLDER
1. Identify the Front and Rear Sides of the crystal. See Section 4.1.
2. Clean & Dry the Crystal Holder cavity, then insert the Crystal with the Front Side (Sensing
Electrode) exposed. The “Wrap-Around Extended Electrode” MUST be in the 60º region as in
Figure 13 below.