Quartz Crystal Microbalance Digital Controller

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2 Getting Started Chapter 1UnpackingBefore You Open the BoxRead the entire Safety and Preparation for Use section of this manual before starting anysetup procedure.Read and follow all installation and operation instructions in this manual to ensure thatthe performance of this instrument is not compromised.Checklist• Open the box(es) and inspect all components of the QCM200 System.• Report any damage to Stanford Research Systems immediately.• Compare the contents of the shipping boxes against your original order and thechecklist below. Report any discrepancies to Stanford Research Systemsimmediately.Standard Equipment Supplies• QCM200 Quartz Crystal Microbalance Controller• QCM25 Crystal Oscillator• Operation and Service Manual• Power cord• 3 foot Cat-5 Cable• Crystal Holder• Three (3) chromium/gold QCM crystals, polished• RS-232 cableOptional Equipment• Replacement Crystals (SRS Part# O100RX1)• Replacement ITO Crystals (SRS Part# O100RX2)• Axial Flow Cell (SRS Part# O100FC.)• Crystal Cleaning Basket (SRS Part# O100CCB)• Replacement Crystal Holder (O100RH)• Ultra-stable Rubidium Frequency Standard (SRS model FS725)QCM200 Quartz Crystal Microbalance
Chapter 1 Getting Started 3Quick Start Instructions1. With the power switch in the Off position, connect the QCM200 Controller to agrounded outlet using the power cord provided.2. Connect the QCM200 Controller to the QCM25 Crystal Oscillator using the Cat-5cable (3 feet long, straight-thru, RJ-45 end connectors).3. Mount a fresh quartz crystal in the Crystal Holder. See special instructions in thefollowing Crystal Installation section.4. Connect the Crystal Holder to the 5 MHz Crystal BNC connector of the QCM25Crystal Oscillator.5. If required, connect the Frequency Analog Output to (1) the Ext A/D Input of yourpotentiostat (EQCM), or (2) a precision voltmeter or (3) an analog-to-digitalconverter.6. If required, connect the RS-232 port to your Host PC and download and install theQCM software: www.thinksrs.com/downloads/soft.htm.7. Set the C o Compensation switch to Hold and the ten-turn dial to 8.0 (Dry OperationSetting).8. Turn the Power switch on and check that the Power LEDs in the QCM200 andQCM25 boxes light up. The OSC LED of the QCM controller turns on as soon asproper quartz oscillation is established in the dry crystal.After a short initialization period, an Absolute Frequency (F) very close to 5 MHz(nominal dry frequency) should be present on the front panel Measurement display.Press the PARAMETER key once to display Absolute Resistance (R) - a value < 75Ohms should be present at this time.9. The QCM200 System is now ready for mass and viscosity measurements.10. For operation under liquid immersion, record the “dry” frequency and conductancereadings and immerse the entire crystal in the solution of interest. For accuratemeasurements (i.e. at “true” series resonance), perform a Capacitance Cancellationprocedure as described in Chapter 2. Consult Chapter 3 for additional tips on QCMoperation in liquids.11. For operation with a flow cell (see Figure 13), pay special attention when filling theflow chamber for the first time so that no air bubbles get trapped in the measurementvolume. Consult Chapter 3 for useful tips on QCM operation in liquid flow cells,including bubble elimination techniques. Temperature stabilization to better than±0.1 °C is essential for high accuracy measurements in aqueous solutions due to thelarge temperature coefficient of viscosity.12. For operation in an electrochemistry setup consult the Electrochemical QuartzCrystal Microbalance (EQCM) section in Chapter 2.QCM200 Quartz Crystal Microbalance
Page 1 and 2: Operation and Service ManualQCM200Q
Page 3 and 4: Safety and Preparation For UseiSafe
Page 5 and 6: ContentsiiiContentsSafety and Prepa
Page 7 and 8: OverviewvFront Panel OverviewFigure
Page 9 and 10: OverviewviiBack Panel OverviewFigur
Page 11 and 12: OverviewixQCM25 Crystal Oscillator
Page 13 and 14: SpecificationsxiSpecificationsQCM20
Page 15: Getting Started 1Chapter 1Getting S
Page 19 and 20: Chapter 1 Getting Started 5Paramete
Page 21 and 22: Chapter 1 Getting Started 7Liquid S
Page 23 and 24: Chapter 1 Getting Started 98. Place
Page 25 and 26: Chapter 1 Getting Started 11Flow Ce
Page 27 and 28: Chapter 1 Getting Started 13Operati
Page 29 and 30: Theory, Operation and Calibration 1
Page 31 and 32: Chapter 2 Theory, Operation and Cal
Page 63 and 64: Sensor Crystals and Holders 49Chapt
Page 65 and 66: Chapter 3 Sensor Crystals and Holde
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Chapter 3 Sensor Crystals and Holde
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QCM Circuit Description 75Chapter 4
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Frequency Counter Selection Criteri
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QCM200 Remote Progamming 101Appendi
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Appendix B QCM200 Remote Programmin
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Appendix B QCM200 Remote Programmin
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Quartz Crystal Microbalance Digital Controller

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