Gamry Instruments PCI4/300 Potentiostat/Galvanostat/ZRA Скачать руководство пользователя

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Chapter 3 -- Cell Cable Connections -- Membrane Cell Connections

3-4

Table 3-3

Cell Cable Connections for a Membrane Cell

Color

Type

Name

Normal Connection

Blue

Banana Plug

Working Sense

Connect to reference electrode #1

Green

Banana Plug

Working Electrode

Connect to counter electrode #1

White

Pin Jack

Reference

Connect to reference electrode #2

Red

Banana Plug

Counter Electrode

Connect to counter electrode #2

Orange

Banana Plug

Counter Sense

Leave open (only needed in ZRA mode)

Long Black

Banana Plug

Floating Ground

Leave open or connect to a Faraday shield

Short Black

Banana Plug

Chassis Ground

Connect to Faraday Shield to reduce EMI

Note that reference electrode #1 and counter electrode #1 must be on one side of the membrane and
reference electrode #2 and counter electrode #2 must be on the other side.

Содержание PCI4/300 Potentiostat/Galvanostat/ZRA

Страница 1: ...uy your excess underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing R...

Страница 2: ...ZRA Operator s Manual includes both the PCI4 300 Potentiostat Galvanostat ZRA and PCI4 750 Potentiostat Galvanostat ZRA Copyright 1997 2011 Gamry Instruments Inc All rights reserved Printed in the USA...

Страница 3: ...i...

Страница 4: ...stall same on instruments previously purchased All instrument specifications are subject to change without notice There are no warranties which extend beyond the description herein This warranty is in...

Страница 5: ...ts Inc assumes no responsibility for errors that might appear Copyrights and Trademarks PCI4 Potentiostat Operator s Manual Copyright 1997 2011 Gamry Instruments Inc All rights reserved Printed in the...

Страница 6: ...ful if you called from a phone near to your computer where you can type and read the screen while talking to us We are happy to provide a reasonable level of free support for registered users of our p...

Страница 7: ......

Страница 8: ...entiostat Systems 2 8 Device Manager 2 9 Authorization Codes and Label 2 9 Application Software Installation and System Checkout 2 10 Calibration 2 11 Chapter 3 Cell Cable Connections 3 1 Cell Indicat...

Страница 9: ...r Address 6 8 Changing the Auxiliary Analog Output Scaling 6 8 Appendix D I O Connections for the PCI4 6 9 CE Compliance EMI and Cable Shielding 6 9 Grounds and the PCI4 Potentiostat 6 9 The Cell Conn...

Страница 10: ...h new software The bulk of Chapter 1 is an overview of the PCI4 s design and modes of operation Chapter 2 contains PCI4 installation instructions Chapter 3 describes cell cable connections Chapter 4 c...

Страница 11: ...Zero Resistance Ammeter The second printed circuit card will be referred to as the Controller Card It contains a PCI bus interface opto coupled serial transfer logic an isolated power supply a signal...

Страница 12: ...Chapter 1 Introduction Potentiostat Schematic Diagram 1 3 Figure 1 1 PCI4 Analog Circuits in Potentiostat Mode...

Страница 13: ...lly two switches in series a relay for low leakage and an FET switch for fast response The label OLP refers to overload protection Gains and resistor values are not shown Two capacitors can be switche...

Страница 14: ...numbered list is reserved for step by step procedures with the steps always performed sequentially Bulleted List The items in a bulleted list such as this one are grouped together because they repres...

Страница 15: ...Chapter 1 Introduction Notational Conventions 1 6...

Страница 16: ...indows 2000 or Windows XP Two unobstructed full height 11 cm PCI expansion slots for each PCI4 card set Each slot must be capable of accepting a 26 cm long 10 inch card Up to 50 watts of power supply...

Страница 17: ...m Card Identification A PCI4 Potentiostat consists of two full height 26 cm long PCI compatible printed circuit boards When you look at your PCI4 cards you will notice that a large portion of one card...

Страница 18: ...dows Plug Play configuration system Unlike Gamry s older potentiostats you don t need DIP switches to configure the card Like most Plug Play hardware it is best if you install the software for the PCI...

Страница 19: ...entiostat Each end of this cable has a 26 pin connector on it The two ends of the cable are identical and therefore interchangeable 3 Plug one end of this ribbon cable into the 26 pin header on the Co...

Страница 20: ...is plugged into the correct connector before making any connection to your cell 1st Time Device Installation in Windows When a PCI4 is first connected to a computer running Windows the Windows Plug an...

Страница 21: ...ly then select Next These messages will also be seen when a PCI4 family instrument is moved to a new PCI slot In this case you can select Install the software automatically even if you do not have the...

Страница 22: ...digit codes that allow different Gamry application software to be used with your PCI4 If you cannot locate your authorization codes please contact Gamry Instruments or your local Gamry Sales represen...

Страница 23: ...amry Instruments potentiostats simultaneously The 16 potentiostats can include both PCI4 family devices and the newer PC5 family devices A system with multiple PCI4s just needs them all plugged into t...

Страница 24: ...a screen that looks similar to the following figure Figure 2 6 Device Manager Window You can now right click on any of the Devices listed under Gamry Instruments and select Properties to look at or c...

Страница 25: ...re Installation and System Checkout Software installation is slightly different for each Gamry Instruments Inc application package Refer to the software installation instructions in the Installation M...

Страница 26: ...t if your unit requires recalibration If you do need to recalibrate and you cannot find the resistor shipped to you you can substitute another 2 k resistor Its wattage is unimportant Some performance...

Страница 27: ...the computer You should always screw the cell cable into place since this cable comes off the card easily otherwise The other end of the cell cable terminates in a number of banana plugs and one pin j...

Страница 28: ...oes not touch any of the other cell connections The shorter black lead is connected to the computer s chassis earth ground If your cell is a typical glass laboratory cell all of the electrodes are iso...

Страница 29: ...Ground Leave open or connect to a Faraday shield Short Black Banana Plug Chassis Ground Connect to Faraday Shield to reduce EMI The counter sense and the working sense lead are each connected to diffe...

Страница 30: ...rence Connect to reference electrode 2 Red Banana Plug Counter Electrode Connect to counter electrode 2 Orange Banana Plug Counter Sense Leave open only needed in ZRA mode Long Black Banana Plug Float...

Страница 31: ...sharp breaks in the current recorded on the system you should suspect oscillation The PCI4 has been tested for stability with cell capacitors between 10 pF and 0 1 F In all but its fastest control am...

Страница 32: ...ments representative for more information concerning changes in these settings Lower the reference electrode impedance Make sure that you don t have a clogged reference electrode junction Avoid asbest...

Страница 33: ...s the cell See Figure 4 2 The capacitor value is generally determined by trial and error One nanofarad is a good starting point In a sense this is another form of an AC coupled low impedance reference...

Страница 34: ...should be selected to give one volt of drop at the highest current expected in the test being run For example if you expect your highest current to be around 1 mA you can add a 1 k resistor This resis...

Страница 35: ...limits implied by picoamp measurements consider the equivalent circuit shown in Figure 5 1 We are attempting to measure a cell impedance given by Zcell This model is valid for analysis purposes even...

Страница 36: ...er have input currents i e Iin 0 The cell and the potentiostat create both a non zero Cshunt and a finite Rshunt Additionally basic physics limits high impedance measurements via Johnson noise which i...

Страница 37: ...ereby reducing the noise at a cost of lengthening the experiment Finite Input Capacitance Cin in Figure 5 1 represents unavoidable capacitances that always arise in real circuits Cin shunts Rm drainin...

Страница 38: ...se of the current noise is noise in the voltage applied to the cell Assume that you have a working electrode with a capacitance of 1 F This could represent a passive layer on a metal specimen The impe...

Страница 39: ...w level measurements It reduces both current noise picked up directly on the working electrode and voltage noise picked up by the reference electrode A Faraday shield is a conductive enclosure that su...

Страница 40: ...apart as possible Pay special attention to the working electrode lead Have the leads approach the cell from different directions Remove the alligator clips from the leads In extreme cases you can repl...

Страница 41: ...ds Ammeters and voltmeters regardless of their specifications almost always create problems when connected to the PCI4 cell leads Floating Operation The PCI4 is capable of operation with cells where o...

Страница 42: ...Chapter 5 Measurement of Small Signals Floating Operation 5 8...

Страница 43: ...0 mV Resolution 16 Bits 1 mV bit 100 V bit 10 V bit 1 V bit DC Accuracy 0 3 Range 1mV Offset Range 12 V with 1 5 mV resolution Current Measurement Analog Full Scale Ranges 3 nA to 300 mA in decades Co...

Страница 44: ...ft 30 V C Noise and Ripple 20 V rms 1Hz 10 kHz Galvanostat Mode Applied i range full scale current no 3 nA range DC accuracy 0 3 full scale Scan Ranges 2X full scale current Current Interrupt Measurem...

Страница 45: ...mV 30 mV Resolution 16 Bits 1 mV bit 100 V bit 10 V bit 1 V bit DC Accuracy 0 3 Range 1mV Offset Range 12 V with 1 5 mV resolution Current Measurement Analog Full Scale Ranges 7 5 nA to 750 mA in deca...

Страница 46: ...30 V C Noise and Ripple 20 V rms 1Hz 10 kHz Galvanostat Mode Applied i range full scale current no 3 nA range DC accuracy 0 3 full scale Scan Ranges 2X full scale current Current Interrupt Measuremen...

Страница 47: ...inimally functional In the time period after installing the software but prior to hardware installation a PCI4 will not be seen in the Windows Device Manager even though its driver has been installed...

Страница 48: ...uments software either install GAMRY5 INI in the correct directory or modify an existing file in this location A portion of a typical GAMRY5 INI file is shown in Figure C 1 Only some of the informatio...

Страница 49: ...1 TYPE ECM 8 LABEL My ECM8 PORT 2 MODE COM2 9600 N 8 1 SerialNo 12345 DC105 NAME DC Corrosion EXPT1 Corrosion Behavior Diagram Corrosion Behavior Diagram exp EXPT2 Corrosion Potential Corrosion Potent...

Страница 50: ...tem where the digits are 1 2 3 4 8 9 A B C D E F We will always precede a hexadecimal number with the prefix 0x e g 0x22F The PCI4 requires a 64 byte memory space for it s hardware control registers T...

Страница 51: ...hield that is connected to the computer s chassis ground This shield acts as an extension of the computer s chassis keeping the RF emission level lower than the limits in the regulations Note that use...

Страница 52: ...tandard cell cable is inadequate for your needs You may find that you need to modify a cell cable or make a special purpose cable By far the easiest changes involve modifying a standard cell cable We...

Страница 53: ...7 Ref Shield A driven shield for the reference electrode input Normally connected to the outer shield of a coax cable on pin 6 Do not ground this pin 8 Counter Sense Input to a voltage follower Norma...

Страница 54: ...Figure D 1 for the identity of all the SMC connectors on this mini panel Note that the shell of this SMC connector is connected to the PCI4 s floating ground Connecting an earth ground referenced sig...

Страница 55: ...these functions are under computer control The meaning of the signal on this connector is therefore highly dependent on the program controlling the PCI4 and cannot be described simply here The one thi...

Страница 56: ...Table D 3 Miscellaneous I O Connector Pin Name Use 1 Analog Output Low The auxiliary output ground connection 2 Analog Output High The auxiliary output signal 3 Sync In Used in slave mode starts data...

Страница 57: ...jumper locations Figure E 1 Auxiliary A D Input Configuration Jumpers View of PCI4 Controller Card Input Impedance Selection Two jumpers are associated with the input impedance J603 and J604 With J603...

Страница 58: ...ncy of this filter is 20 Hz Note that source impedances greater than 1 k will appreciably lower this cutoff frequency When the Aux A D input is driven by a source with an output impedance of 1 M the f...

Страница 59: ...Appendix F CE Certificate Certificate of Conformance 6 17 Appendix F CE Certificate Certificate of Conformance...

Страница 60: ...Appendix F CE Certificate Certificate of Conformance 6 18...

Страница 61: ...card 1 2 floating ground 3 2 floating operation 5 7 fluorescent lights 5 5 Gamry Framework 1 1 GAMRY5 INI 2 11 6 6 green cell lead 3 2 grounds 6 9 high frequency shunt 4 3 hints 5 5 I Channel Output...

Страница 62: ...schematic 1 2 shorter black lead 3 2 small signals 5 1 stability 4 1 static discharges 2 3 stress apparatus 6 9 turn key system 2 1 V Channel Output 6 13 voltage noise 5 4 white cell lead 3 2 Windows...

Страница 63: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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