BiStat 3200 User Manual
Contents
1. 4 2 USING THE KEYS Each channel 1 amp 2 of the BiStat 3200 has three user keys to control its operation Left Centre amp Right The function of these keys is context sensitive The immediate function of the three keys is indicated on the display by a key word or icon adjacent to each key In general the centre key is the Selection or OK key and the left and right keys navigate the available options or scroll through numerical or alphabetic characters In the photo example the centre key is used to select the Set E option whilst the left amp right keys scroll round the different centre key menu options The arrow icons indicate the left and right key operations Page 16 of 33 Please note that each channel may be put to sleep by pressing and holding the centre key for a few seconds 4 3 MAIN MENU When the BiStat 3200 has been switched on it displays a screen showing the real time potential and current values of the electrochemical cell at the top of the display The bottom line of the display shows the menu options The menu options are scrolled round using the left and right keys The selected menu option is displayed adjacent to the centre key Pressing the centre key invokes the selected option Following switch on the Set E is the first menu option displayed The main menu options are considered in detail below in order following the right key 4 3 1 SetE If the BiStat 3200 is set2. Current measurement accuracy lt 0 5 I E Input Bias lt 10pA Applied Potential Range 2Volts factory option to increase Applied Potential accuracy 0 2 Applied Potential Resolution 16 Bits 61uV Measured Potential Range 2 Volts factory option to increase Compliance voltage 8Volts RE input gt 10 Ohms 5pF Page 31 of 33 Chapter 11 Technical support 11 TECHNICAL SUPPORT For technical support on your BiStat 3200 please contact your distributor initially In the event where your distributor cannot provide a solution please contact Uniscan Instruments Ltd Sigma House Burlow Road Buxton Derbyshire UK SK17 9JB Tel 01298 70981 Fax 01298 70886 Email support uniscan com Web www uniscan com Please register your BiStat 3200 with Uniscan Instruments by sending an email to support uniscan com Please send contact details instrument serial number and your distributor We will add you to our BiStat 3200 database and keep you informed of all updates including software firmware and accessories for your BiStat 3200 Uniscan operate a software download system on www uniscan com Please see any of the product page for a link Page 33 of 33
3. Galvanostat measurement and should be used for no other purpose The manufacturers and distributors accept no responsibility for accidents or damage resulting from any failure to comply with these precautions INSTALLATION CATEGORY In compliance with the Low Voltage Directive LVD 72 23 EEC this equipment is designated as Installation Category Cat II GROUNDING To minimise the hazard of electrical shock it is essential that the equipment is connected to a protective ground whenever the power supply and or separate measurement devices are connected even if the equipment is switched OFF FUSES Before switching on the BiStat 3200 check that any fuses accessible from the exterior of the equipment are of the correct rating The rating of the a c line fuse must be in accordance with the voltage of the a c supply Should any fuse continually blow DO NOT insert a fuse of a higher rating Switch the equipment OFF clearly label it Unserviceable and inform a service technician EXPLOSIVE ATMOSPHERES NEVER OPERATE the BiStat 3200 or any units connected to the equipment in a potentially explosive atmosphere The BiStat 3200 is NOT Intrinsically Safe and could possibly cause an explosion NOTES For guidance and protection of the user Notes appear throughout the manual These highlight important information for the user s attention to prevent damage to the user or the equipment DISPOSAL The BiStat 3200 instrument
4. Key 1 Left ihi Power Switch Right Overload LED 2 Key 1 E Overload CELL2 depre LeD2 Connector E Overload LED1 Left LED 1 CELL 1 Key 2 Connector Power Connector USB Connector Figure 1 BiStat 3200 Instrument Hardware Features Page 11 of 33 Power Connector This connection is used to connect the supplied power adapter to the BiStat 3200 The power adapter powers the instrument continuously from mains power Only the supplied power supply should be connected to this connector Details of the dc power connector pins can be found in the Connector details section of this manual USB This connection is used to connect the BiStat 3200 to a host computer The BiStat 3200 is normally connected directly to a standard USB port of a personal computer The BiStat 3200 can be connected via a USB hub provided the maximum USB cable amp hub specifications are not exceeded Please note that the BiStat 3200 employs an internal USB hub which must be taken into account when considering the maximum number of nodes and cable lengths from the host computer Power Switch This toggle switch is used to switch the instrument on amp off When switched on the LCD displays show the instrument parameters after a few seconds Left key 1 amp 2 This key or button is used to enter information into the BiStat 3200 when the instrument is being used stand alone The Left key is generally used to navigate through menu items or available se
5. description V G Be WE1 a Ar AGnd ae WE2 O 10 5V Dig TE WE3 11 Cell TXD a WE4 m 12 Cell RXD 315 WE5 O 13 DGnd VAux1 oO T a FN O oL7 RE O 15 12V oO 8 GE Mii UE Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 8 1 2 Pin description WE1 First Working Electrode WE2 Second Working Electrode WES Third Working Electrode WE4 Fourth Working Electrode WE5 Fifth Working Electrode VAux1 Auxiliary voltage input 2V ref Analog Ground special ground considerations Pin 7 Pin 8 Pin 9 Pin 10 Pin 11 Pin 12 Pin 13 ground Pin 14 connect RE Reference electrode CE Counter Electrode Analog ground Reserved do not connect do not connect to Digital ground 5V Reserved do not connect very limited output current capability Cell Txd 12C bus connection for peripherals Reserved do not connect Cell Rxd l2C bus connection for peripherals Reserved do not connect Digital Ground earth use to screen input cables Do not connect to Analog 12V supply for peripherals very limited current capability Reserved do not Page 27 of 33 Pin 15 12V supply for peripherals very limited current capability Reserved do not connect 8 2 DC POWER CONNECTOR DETAIL C N VExt DGnd Pin Description DGnd Digital ground VExt External power positive Page 28 of 33 Chapter 9 Power Supply 9 POWER SUPPLY The B
6. is marked with the crossed out wheelie bin symbol At E the end of its life the instrument should not be disposed of with conventional refuse Please contact your supplier who will advise you on the correct method of a disposal for your instrument SAFETY PRECAUTIONS FROM PREVIOUS PAGE SAFETY SYMBOLS For guidance and protection of the user the following safety symbols appear on the equipment where relevant Symbol Meaning Caution refer to accompanying documents AN Caution risk of electric shock Earth ground TERMINAL AVOID UNSAFE EQUIPMENT The equipment may be unsafe if any of the following statements apply e Equipment shows visible damage e Equipment has failed to perform the intended operation e Equipment has been subjected to prolonged storage under unfavourable conditions e Equipment has been subjected to severe physical stress If in any doubt as to the serviceability of the equipment do not use it Get it properly checked out by a qualified service technician Live CONDUCTORS When the equipment is connected to its measurement inputs or supply the opening of covers or removal of parts could expose live conductors The equipment must be disconnected from all power and signal sources before it is opened for any adjustment replacement Maintenance or repair Adjustments maintenance or repair must be done by qualified personnel who should refer to the servicing manual EQUIPMENT MODIFICATION
7. of 33 Set E 0 0004 Indicates the applied potential which would be applied to the cell if the cell were On rather than Off as it is in the switch on state The applied potential may be set in the Set E menu option Please note that if the instrument were in Galvanostat mode then this indication would display Set 0 000A and the Set E menu would be changed to Set l Cell E OVER Y Indicates the cell potential That is the potential difference between the RE amp WE connections In this example none of the cell connections are connected to anything Since the RE input is very high impedance it floats to a value beyond the measurable range hence the display shows OVER instead of a voltage value Cell 00 04mA Indicates the current in the cell WE connection In this example the cell is off and the WE connection is not connected to anything thus the value floats picking up electromagnetic interference The displayed value is scaled with the selected current range In this case the instrument is on the 10mA current range E Indicates that the left menu key or button will scroll the centre menu option one place to the left Mom Indicates that the centre key or button will select the Set E menu option There are several menu options which are detailed below Indicates that the right menu key or button will scroll the centre menu option one place to the right
8. overload LED indicates when the output amplifier CE potential amplitude is too high for the instrument No meaning full data is measured when this LED is illuminated The 1 amp 2 nomenclature refers to the two potentiostats respectively Page 12 of 33 10 Cell connector 1 4 2 The cell connector provides the electrical connections between the BiStat 3200 and the electrochemical cell The BiStat 3200 is shipped with a standard three electrode cell cable which connects to this connector The standard screened cell cable has three connections WE Working Electrode RE Reference Electrode and CE Counter Electrode There are several alternative cell cables available for the BiStat 3200 which suit different applications Please consult your distributor for details The cable supplied is a screened cable for use with single electrode cells Details of the Cell connector pins can be found in the Connector details section of this manual The 1 amp 2 nomenclature refers to the two potentiostats respectively Page 13 of 33 Chapter 4 Front panel operation 4 FRONT PANEL OPERATION The BiStat 3200 operates in several modes the simplest is from the front panel controls In this mode of operation the BiStat 3200 is able to apply static potentials Potentiostat or currents Galvanostat and measure a static potentials and currents The options are set by navigating through an interactive menu system and the results are displayed on the displa
9. ARD ELECTROCHEMICAL TECHNIQUES The UiEChem software application provides many standard electrochemical techniques including Chronoamperometry Linear Voltammetry Cyclic Voltammetry Squarewave Voltammetry Normal pulse Voltammetry Differential pulse Voltammetry Chronopotentiometry 6 2 UIECORR STANDARD CORROSION TECHNIQUES The UiECorr software application provides many standard corrosion techniques including ECorr vs Time Galvanostatic Polarization Linear Polarization Resistance Potentiodynamic Polarization Potentiostatic Polarization Tafel Zero Resistance Ammetry 6 3 CUSTOM TECHNIQUES The Windows software applications provide a facility to implement custom techniques by programming macro experiments This facility gives direct control of the advanced BiStat 3200 waveform generator and data acquisition features and allows the custom experiment to be displayed on a user defined window template Please contact your distributor for help with macro experiments Page 23 of 33 6 4 STAND ALONE PROGRAMMING The Windows software applications provide a facility to implement standalone programming of the BiStat 3200 In this mode the BiStat 3200 stores a user defined program which controls the instrument actions and display The BiStat 3200 will execute this user program in place of the normal Potentiostat Galvanostat panel control Please contact your distributor for help with macro experiments 6 5 INS
10. TALLATION The Windows software is normally supplied on CD ROM To install the software locate the Setup exe on the CD and run it Loading the CD on a Windows system should cause the Set up to execute automatically Please note that the software should be installed before the hardware is connected to your computer so that the instrument driver software is pre installed 6 6 SOFTWARE MANUAL The Windows software manual is included with the software in the form of on line help See the Help Contents menu in the software application Page 24 of 33 Chapter 7 Accessories 7 ACCESSORIES There are several accessories available for the BiStat 3200 Several more accessories are planned for the BiStat 3200 please contact your distributor for the latest information 7 1 SCREENED MULTI WORKING ELECTRODE CABLE A five WE connection screened multi electrode cable is available for your BiStat 3200 This allows up to five WE connections to be addressed sequentially Page 25 of 33 8 1 Chapter 8 Connector Details 8 CONNECTOR DETAILS CELL CONNECTOR DETAIL The detail of the 15way female D connector used for the BiStat 3200 cell connections are given here There are several connections on the connector which are capable of causing damage to the BiStat 3200 if connected incorrectly Please consult your distributor for any advanced connection arrangements before attempting modifications 8 1 1 Cell Connector Pin
11. To avoid introducing safety hazards never install non standard parts in the equipment or make any unauthorised modification To maintain safety always return the equipment to your supplier for service and repair ELECTROLYTES Correct handling and disposal of the electrolyte in accordance with manufacturer s instructions is essential for safe operation of the system Page 8 of 33 Chapter 2 Introduction 2 INTRODUCTION The potentiostat galvanostat has become an accepted and widely used instrument for the study of electrochemistry and corrosion mechanisms The BiStat 3200 provides the facilities found in a traditional lab based instrument in a dual design The BiStat 3200 operates as two independent isolated instruments or as a Bi Potentiostat or Bi Galvanostat The instrument may be operated from its front panel using the dual keypads and LCD displays or connected to a Windows based personnel computer When connected to a personnel computer the instrument is supported by the UiEChem and UiECorr software applications for Electrochemistry and Corrosion research respectively The instrument may also be controlled from third party programming environments such as Visual Basic Labview etc using the optional activeX control interface Page 9 of 33 Chapter 3 Hardware Description 3 HARDWARE DESCRIPTION a i i t BiStat 3200 uniscan instruments ci LCD spia Display 2 Display 1 Centre Key 2 Right Centre Righi
12. U uniscan instruments BiStat 3200 Dual Potentiostat Galvanostat OPERATING MANUAL Blank Page Reverse side of front Cover BiStat 3200 Dual Potentostat Galvanostat OPERATING MANUAL Issue 1 1 bb N BiStat 3200 OPERATING MANUAL CONTENTS Section SAFETY PRECAUTIONS INTRODUCTION HARDWARE DESCRIPTION FRONT PANEL OPERATION 4 1 Display navigation 4 2 Using the keys 4 3 Main menu CONNECTING 5 1 Connecting to a computer 5 2 Connecting to your electrochemical cell SOFTWARE 6 1 UiEChem Standard Electrochemical Techniques 6 2 UiECorr Standard Corrosion Techniques 6 3 Custom Techniques 6 4 Stand alone programming 6 5 Installation 6 6 Software Manual ACCESSORIES 7 1 Screened Multi Working Electrode Cable CONNECTOR DETAILS 8 1 Cell connector detail 8 2 dc power connector detail POWER SUPPLY 9 1 Power supply adapters 9 2 Fitting Adapters 10 SPECIFICATIONS 11 TECHNICAL SUPPORT Page 1 SAFETY PRECAUTIONS The BiStat 3200 Potentiostat Galvanostat equipment described in this manual complies with the Low Voltage Directive LVD 72 23 EEC To avoid injury to an operator or service technician the safety precautions given below and throughout the manual must be strictly adhered to whenever the equipment is operated serviced or repaired For specific operational details refer to the relevant section within this manual The BiStat 3200 is designed solely for Potentiostat
13. ck on when a key is pressed The centre OK key accepts the contrast value and returns the instrument back to its normal status display Page 19 of 33 Chapter 5 Connecting 5 CONNECTING In this section we will show how to connect the BiStat 3200 to the host computer and to your electrochemical cell 5 1 CONNECTING TO A COMPUTER The BiStat 3200 is connected to a host computer using the USB cable supplied The software supplied with the instrument should be installed before the instrument is connected to the computer so that the instrument driver is preloaded on the computer When the driver is preloaded the computer will automatically install the instrument without user interaction If the driver is not installed the user will need to manage the driver installation which could result in the instrument not being installed correctly The BiStat 3200 is normally connected directly to a standard USB port of a personal computer The BiStat 3200 can be connected via a USB hub provided the maximum USB cable amp hub specifications are not exceeded Please note that the BiStat 3200 employs an internal USB hub which must be taken into account when considering the maximum number of nodes and cable lengths from the host computer 5 2 CONNECTING TO YOUR ELECTROCHEMICAL CELL The BiStat 3200 is supplied with two screened three electrode cell cables one for each of the two channels This cable has a 15 pin D connector on one e
14. iStat 3200 is shipped with a universal power supply unit The power supply is compatible with the most common mains electricity systems throughout the world The power supply is capable of operating from a wide input voltage range 100V to 240V 47 to 63Hz The power supply features interchangeable adapters for different countries UK USA Europe and Australia The power supply connects to the BiStat 3200 via the power socket on the instrument rear panel 9 1 POWER SUPPLY ADAPTERS The power supply adapters supplied with the BiStat 3200 are shown in the photograph below de um United Kingdom United States Europe Australia 9 2 FITTING ADAPTERS The adapters are fitted to the power supply by a good sliding fit The photograph below illustrates how to fit the interchangeable adapters Page 29 of 33 Power supply shown with the UK adapter fitted Page 30 of 33 Chapter 10 Specifications 10 SPECIFICATIONS Dimensions width 213mm height 110mm depth 240mm Weight 2 1Kg PC Interface USB 2 Standard A B cable supplied Display 2 x Graphic LCD 160x100 pixels Blue LED Backlight Processor Dual 16 bit H8S 18MHz per channel Data acquisition 16Bits gt 100KHZz per channel Rise time 1V usec Into 1kQ Maximum applied current 10mA Maximum measurable current 20mA Current Ranges 1nA to 10mA in 8 decade ranges Full scale 2x each range Current measurement resolution 16 bits
15. lections The function of this key is dynamic and follows the adjacent icon on the display The 1 amp 2 nomenclature refers to the two potentiostats respectively Centre key 1 amp 2 This key or button is used to enter information into the BiStat 3200 when the instrument is being used stand alone The Centre key is generally used to select menu items or OK options The function of this key is dynamic and follows the adjacent icon on the display The 1 4 2 nomenclature refers to the two potentiostats respectively Right key 1 8 2 This key or button is used to enter information into the BiStat 3200 when the instrument is being used stand alone The Right key is generally used to navigate through menu items or available selections The function of this key is dynamic and follows the adjacent icon on the display The 1 amp 2 nomenclature refers to the two potentiostats respectively LCD Display 1 amp 2 The display shows all the relevant information to the operator The display also provides menu icons and labels for identifying the three user keys The 1 amp 2 nomenclature refers to the two potentiostats respectively current overload LED 1 4 2 The overload LED indicates when the measured current amplitude is too high for the selected current range No meaningful data is measured when this LED is illuminated The 1 amp 2 nomenclature refers to the two potentiostats respectively E potential overload LED 1 amp 2 The E
16. nd and three cables with 4mm plugs and optional crocodile clips The 15 pin D connectors should be connected to the Cell 1 and Cell 2 connectors on the front panel of the instrument Page 21 of 33 uniscan instruments The three flying leads from each cell are connected to your electrochemical cell Working electrode WE Reference Electrode RE Counter Electrode CE In a typical three electrode electrochemical cell the WE is connected to the system under study which maybe a milli electrode microelectrode or electrochemical sensor The RE is connected to a glass reference electrode Silver Silver Chloride Sat Calomel etc The Counter electrode is typically connected to platinum gauze platinum wire or a carbon rod In a two electrode arrangement there is no separate reference electrode and the RE connection is connected to the CE Both channels of the instrument are electrically isolated from each other floating The instrument can therefore be connected as a BiPotentiostat or BiGlavanostat by connecting the two CE connections together and the two RE connections together Page 22 of 33 Chapter 6 Software 6 SOFTWARE The BiStat 3200 is supported by the UiEChem and UiECorr software applications for Windows This software runs on a personnel computer The UiEChem software provides standard electrochemical techniques whilst the UiECorr software provides standard corrosion techniques 6 1 UIECHEM STAND
17. r and OK When the Cell option is highlighted pressing the centre select key repeatedly scrolls though the options for the Cell these are Off and On This enables the CE Counter Electrode connection to your cell and allows the instrument to apply potential to the WE Working Electrode When the Cell Number is highlighted pressing the centre select key repeatedly scrolls thought the options for the Cell Number these are 1 2 3 4 amp 5 The Cell number refers to the WE Working Electrode connection on the instruments Cell connector The standard cable WE connection is connected to the first 1 WE connection When the OK option is highlighted the values for Cell amp Cell Number are accepted and the screen closes and returns to the normal instrument status window 4 3 4 Mode The mode option allows selection of Potentiostat Galvanostat or ZRA operation modes 3 11 The left and right keys scroll though the three options Potentiostat Galvanostat and ZRA The centre OK key confirms the selection and returns to the normal instrument status window Page 18 of 33 In Potentiostatic mode a constant potential is defined and a variable current is measured The Potentiostat maintains the working electrode WE at constant potential with reference to the reference electrode RE The potentiostat achieves this by controlling the po
18. tential of the counter electrode CE In Galvanostat mode a constant current is defined and a variable potential is measured with reference to RE The Galvanostat maintains a constant current through the working electrode by controlling the potential of the counter electrode CE In ZRA mode the current between two electrodes connected to the WE amp CE connections is measured The RE potential may also be measured but does not affect any applied potential In ZRA mode it is normal for the applied potential to be zero such that both electrodes are effectively connected together In any of the operation modes care should be taken in the correct selection of current range to achieve optimum results 4 3 5 Contrast This menu option sets the contrast of the LCD display It should be set to give the most leasing image on the display The left and right keys increment and decrement the contrast value from zero to 100 The display contrast can be observed whilst changing the value The centre OK key accepts the contrast value and returns the instrument back to its normal status display 4 3 6 Backlight This menu option controls the blue LED backlight operation of the display The left and right keys increment and decrement the Backlight value from Off to Always ON If a time values such as 10 seconds is selected then the display backlight will turn off when no key is pressed for 10 seconds The backlight will turn ba
19. to Potentiostatic mode then the Set E Set Potential option is available The potential is defined in volts The left key increments the selected character The right key selects the next character The centre OK key accepts the defined potential 4 3 2 Range The Range Current range selection defines the maximum and minimum current measuring capability of the BiStat 3200 The left and right keys increment or decrement the current range The centre OK key selects the range The current range should be chosen such that the required measured or applied current is comfortably in the range If the current range is set too high then the measured current will be lost in the IE converter noise floor If the current range is set too low the IE converter will overload in the event that the current exceeds the maximum A current overload is indicated by the overload LED on the front of the instrument The top current range is Auto Page 17 of 33 if this is selected then the instrument will automatically increment and decrement the current range based on the measured current value This auto current range setting is applied only to the front panel operation of the instrument and does not relate to any auto current ranging which may be implemented in controlling software 4 3 3 Cell This menu option controls the cell connection The left and right keys scroll through the three options Cell Cell Numbe
20. y The dual channel facilities of the instrument enable it to have independent set amp measurement parameters for each of the two channels It is possible for the BiStat 3200 to have a User Program loaded which runs in place of the standard front panel operation In this case the following description of the operation of the instrument does not apply 4 1 DISPLAY NAVIGATION Instrument Display after power up The image above shows the LCD display when the instrument is first switched on The display shows the real time status of the instrument The information may be broken down into the following sections Cell 1 Indicates that the first of the five available WE Working Electrode connections is selected This may be changed in the Cell menu Please note that the standard cable with a single WE connection is connected to 1 OFF Indicates that the cell is switched off The cell may be switched On in the Cell menu When the cell is switched off the CE Counter Electrode connection is isolated The potential difference between RE Reference Electrode and WE Working Electrode is still measured in the Cell E parameter When the cell is off no potential or current may be applied to the cell P Static Mode Indicates that the instrument is in Potentiostatic mode Alternatively the instrument may be in Galvanostatic G Static or ZRA Mode The mode may be set in the Mode menu Page 15
Download Pdf Manuals
Related Search