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Chapter 2 -- Introduction--Notational Conventions

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Содержание eQCM 10M

Страница 1: ...i Impedance Scanning Electrochemical Quartz Crystal Microbalance TM ...

Страница 2: ...ii ...

Страница 3: ...iii Impedance Scanning Electrochemical Quartz Crystal Microbalance Operator s Manual Copyright 2012 Gamry Instruments Inc Revision 1 2 August 27 2012 ...

Страница 4: ...problems in installation or use of a system containing an eQCM10M it would be helpful if you called from a phone next to your computer where you can type and read the screen while talking to us We will be happy to provide a reasonable level of free support for registered users of the eQCM10M Reasonable support includes telephone assistance covering the normal installation use and simple customizat...

Страница 5: ...ime without incurring any obligation to install same on systems previously purchased All system specifications are subject to change without notice There are no warranties which extend beyond the description herein This warranty is in lieu of and excludes any and all other warranties or representations expressed implied or statutory including merchantability and fitness as well as any and all othe...

Страница 6: ...umes no responsibility for errors that might appear Copyrights eQCM 10M Impedance Scanning Electrochemical Quartz Crystal Microbalance Operator s Manual copyright 2012 Gamry Instruments Inc all rights reserved Gamry Framework copyright 1989 2012 Gamry Instruments Inc all rights reserved Reference 600 Reference 3000TM PC4 PCI4 eQCM 10M Gamry Framework PHE200 and Gamry are trademarks of Gamry Instru...

Страница 7: ...itry 3 1 eQCM 10M Schematic Block Diagram 3 1 Chapter 4 Installation 4 1 Initial Visual Inspection 4 1 Physical Location 4 2 Computer Requirements 4 2 Plug Play System Configuration 4 2 Power Cord and Power Connection 4 3 Power Up Test 4 3 USB Cabling 4 4 1st Time Device Installation in Windows 4 5 Device Manager 4 7 Chapter 5 Cell Connections 5 1 Normal Cell Connections 5 1 Quartz Crystal Install...

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Страница 9: ...ned for connection to circuits other than the power mains The instrument contains a limited amount of internal circuitry that is at hazardous live voltages as defined in EN 61010 the standard mentioned above Reinforced insulation again defined in EN 61010 is used to reduce the risk of electrical shock due to this hazardous live voltage As a generalization input and output voltages in the eQCM 10M ...

Страница 10: ... to making this earth ground connection Note this connection of the instrument to an earth ground is not a Protective Earth Ground as defined in EN 61010 This binding post is not intended for any use other than connecting the eQCM 10M to an earth ground to improve shielding against noise Connecting this binding post to a hazardous voltage can create a significant safety hazard WARNING Do not conne...

Страница 11: ...ity Maximum 90 non condensing Warning The instrument is not designed for operation in conditions where liquid water may enter the chassis or water vapor may condense within the chassis Operation of an instrument that has water within the chassis can create a safety hazard which could result in personal injury or death Cleaning Disconnect the eQCM 10M from all power sources prior to cleaning Use a ...

Страница 12: ...ectricity sparks are apparent when you touch the instrument or it s cables Placing the instrument on a static control work surface may help Static control work surfaces are now generally available from computer supply houses and electronics tool suppliers An antistatic floor mat may also help particularly if a carpet is involved in generating the static electricity Air ionizers or even simple air ...

Страница 13: ... more than two times its price The instrument can operate as a stand alone quartz crystal microbalance or in conjunction with a potentiostat eQCM 10M features include 1 10 MHz operating range with no need to send the unit back to the factory in order to recalibrate for different frequency crystals DC decoupled output for interface with a potentiostat 0 02 Hz resolution Reporting of both the series...

Страница 14: ...Chapter 2 Introduction Notational Conventions 2 2 ...

Страница 15: ...ails The schematic block diagram figure shows the quartz crystal microbalance board Figure 3 1 eQCM 10M Impedance Scanning Quartz Crystal Microbalance Board Simplified Schematic Block Diagram Notes for Figure 3 1 The programmable logic device PLD acts as the core of the QCM Sine waves of varying frequencies and amplitude are generated by the DDS in 4096 steps from 0 05 to 8 33 Vrms The PLD and DDS...

Страница 16: ...hemical studies The output signal from the crystal is coupled out by the same network The signal is then passed through an RMS to DC TRMS converter and evaluated by a successive approximation A D converter ADC The PLD then performs some low level math functions and delivers the data to a ground isolated ISO USB interface USB 3 2 ...

Страница 17: ...y the carrier Warning The reinforced insulation that keeps the operator from accessing the hazardous live voltages in the instrument can be rendered ineffective if the eQCM 10M is damaged in shipment Do not operate damaged apparatus until a qualified service technician has verified its safety Tag a damaged eQCM 10M to indicate that it could be a safety hazard Warning If the eQCM 10M is taken from ...

Страница 18: ... if a computer or other heat dissipating equipment is mounted in the same enclosure The eQCM 10M has not been designed for outdoor use Computer Requirements Before you connect an eQCM 10M to a computer you must make sure that your computer meets these simple requirements A computer based on one of the Pentium family of Intel microprocessors or a 100 compatible processor from another vendor One of ...

Страница 19: ...emale connector on the apparatus end of the cable This is the same connector used on the US standard line cord supplied with your instrument See Chapter 1 for specific safety information regarding line cord selection The DC output cord from the external power supply plugs into the DC Power input jack on the rear panel of the eQCM 10M see Figure 4 2 CAUTION Only use the supplied 12 volt DC power su...

Страница 20: ...different connectors on each end The end with a wider rectangular shaped connector plugs into a USB port on your computer or a similar port on a USB hub The end with a nearly square connector plugs into the USB port on the eQCM 10M see Figure 4 3 Figure 4 3 Rear Panel of the eQCM 10M with USB Cable The USB connection can be hot plugged This means both the computer and the eQCM 10M can be powered u...

Страница 21: ...ice it is The message that will appear is something like New device found or Unknown USB device Detected When this occurs after you ve connected an eQCM 10M tell Windows that you would like to install the new device You should see a screen that looks something like this Figure 4 4 Welcome to the Found New Hardware Wizard As shown in this Figure do not choose to let Windows Update find the device d...

Страница 22: ...ay need to be followed for each USB port on your computer depending upon your operating system requirements Once the eQCM 10M has been connected to a port removing and reconnecting to that port will no longer require any device installation If you expect to switch between multiple USB ports on your computer it is recommended to go through each of the ports in sequence while your installation CD is...

Страница 23: ...Under Windows XP right clicking on the My Computer icon and selecting Properties brings up the System Properties dialog box Select the Hardware Tab and then click on the Device Manager button This should bring up the Device Manager screen Clicking on the sign next to Gamry Instruments should expand the tree view to give you a screen that looks similar to the following figure Figure 4 6 Device Mana...

Страница 24: ...u will need to enter in the necessary 10 digit authorization code into the Device Settings tab for your potentiostat Click on Add to bring up a dialog box that looks like the one below Figure 4 8 Enter an Authorization Code Enter the package name as QCM and the necessary 10 digit Authorization Code then click OK to store the changes ...

Страница 25: ...mal Cell Connections Each eQCM was shipped with a standard shielded BNC cable terminated with a ceramic adapter The Gamry part number for this cable is 985 00124 The male end of the cable gets attached to the front panel of the eQCM 10M see Figure 5 1 Figure 5 1 Connection of Cell Cable ...

Страница 26: ...ion Place a clear plastic insulator on the quartz crystal and attach the adapter see Figures 5 2 and 5 3 Figure 5 2 Crystal with Plastic Insulator Figure 5 3 Connection of Metal Adapter Next place the crystal with the working face upward on the bottom of the Teflon cell see Figure 5 4 ...

Страница 27: ...use the four supplied screws to hold the bottom and body of the cell together see Figure 5 5 Figure 5 5 Assembly of Cell Do not over tighten or you may damage the threads or the crystal Lastly insert the leads from the crystal into the ceramic adapter on the BNC cable being sure to connect the black lead to the quartz crystal lead below the black dot on the Teflon cell see Figure 5 6 ...

Страница 28: ... Plug the small end of the cable into the W E on the front panel of the eQCM 10M next to the BNC connector see Figure 5 7 Connect the working and working sense leads of your potentiostat to this cable Figure 5 7 Connection of Working Green and Working Sense Blue Leads to Crystal A binding post on the rear panel of the eQCM 10M is provided for grounding purposes A water pipe can be a suitable sourc...

Страница 29: ...terial deposited onto the electrode face Therefore special consideration of the environment will help ensure you are acquiring the best data possible Vibrations or sudden movements should be minimized or eliminated during acquisition Likewise temperature fluctuations should be kept to a minimum Changes in temperature and the rate of change of temperature will both cause frequency drift during data...

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Страница 31: ...D appear lighted continuously Rear Panel The rear panel contains one switch and three connectors A picture of the eQCM 10M rear panel can be seen in Figure 4 Power In Jack The eQCM 10M derives all of its power from 12 volts DC input through the Power In jack The input current is less than 3 amps We recommend that you always use the external power supply supplied with your eQCM 10M to supply DC pow...

Страница 32: ...ably an externally powered hub The two ends of a Type A B cable are different The more rectangular end plugs into the computer and the more square end plugs into the instrument A suitable USB cable was included with your eQCM 10M system If this cable is lost you can replace it with a cable from your local computer retailer The eQCM 10M is a High Speed USB 2 0 peripheral capable of data transfer at...

Страница 33: ...Environmental Operating Temperature Range 0 to 45 C Relative Humidity Max 90 non condensing Storage and Shipping Temperature 25 to 75 C Maximum Shipping acceleration 30 G General Power Input Voltage Range 10 to 14 Volts Power Max 25 W Dimensions Max 175 x 115 x 80 mm Weight Max 1 kg Dimensions of External Power Adapter Max 120 x 55 x 30 mm Weight of External Power Adapter Max 400 grams ...

Страница 34: ...emissions Part 1 Residential areas EN 55011 Industrial scientific and medical ISM radio frequency equipment Electromagnetic disturbance characteristics Limits and methods of measurement IEC CISPR 11 1997 A1 1999 A2 2002 EN 55022 Conducted and radiated emission test B EN 50082 2 Electromagnetic compatibility Generic immunity Standard Part 2 Industrial environment EN 61000 4 3 Radiated Field Immunit...

Страница 35: ...nd binding post 1 2 Help system 2 1 high speed USB 6 2 inspection 1 1 installation 4 1 operation 1 3 Plug Play 4 2 power brick 1 1 Power Connection 4 3 Power Cord 4 3 Power In 6 1 power LED 4 3 Power LED 6 1 power line transient 1 4 Power switch 4 3 Power Switch 6 1 Problems iv radio frequency 1 4 safety 1 1 schematic 3 1 service 1 3 service contract iv shielding against noise 1 2 shipping 1 3 sta...

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