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Summary of Contents for Ametek VersaSTAT LC Series
- Page 1 VersaSTAT LC Low Current Interface (LCI) Hardware Manual P/N 224186 Rev B...
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Page 2: Table Of Contents
VersaSTAT LC Low Current Interface (LCI) Hardware Manual P/N 224186_0B TABLE OF CONTENTS Figures ......................iii Tables ......................iii Safety Instructions and Symbols..............iv Cleaning Instructions ..................iv 1. Introduction ....................1 1.1. About This Manual ................. 1 1.2. About the Low Current Interface (LCI) ............1 1.2.1. - Page 3 VersaSTAT LC Low Current Interface (LCI) Hardware Manual P/N 224186_0B 4.1.5. Current Control ................15 4.2. Physical Specifications ................15 4.3. Standard Environmental Conditions ............16 5. Warranty ....................17 FIGURES Figure 1. VersaSTAT LC Assembly ................ 1 Figure 2. LCI-Potentiostat Interface Cable ............. 2 Figure 3.
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Page 4: Safety Instructions And Symbols
VersaSTAT LC Low Current Interface (LCI) Hardware Manual P/N 224186_0B SAFETY INSTRUCTIONS AND SYMBOLS This manual contains up to three levels of safety instructions that must be observed in order to avoid personal injury and/or damage to equipment or other property. These are: Safety Keywords: DANGER Indicates a hazard that could result in death or serious bodily harm if the safety instruction... -
Page 5: Introduction
1. INTRODUCTION 1.1. About This Manual This manual covers the installation and use of the VersaSTAT LC Low Current Interface (Figure 1) option for the VersaSTAT series and some PARSTAT series of potentiostats/galvanostats. The VersaSTAT LC is also referred to as the LCI option. This manual does not discuss software installation or operation outside of the calibration procedure (Section 2.2). -
Page 6: Lci Interface Cable
VersaSTAT LC Low Current Interface (LCI) Hardware Manual P/N 224186_0B Table 1. Low Current Interface PAR Potentiostat/Galvanostat Models that Support the VersaSTAT LC Low Current Interface VersaSTAT 3 VersaSTAT 4 VersaSTAT 3F VersaSTAT MC PARSTAT 4000 PARSTAT MC The LCI consists of: 1) Interface cable that connects the cell cable interface of the potentiostat/galvanostat to the LCI main body. -
Page 7: Lci Cell Cables
Chapter 1: Introduction has the coaxial connections for the four cell cables, as well as a ground connection. Also, pin-jack connections for the cell cables are provided that connect across a built-in 10Mohm (10E7) resistor that is to be used to provide feedback when the LCI does not have a cell to connect to, and/or it can be used as a “dummy cell”... -
Page 8: Inspecting Your New Instrument
VersaSTAT LC Low Current Interface (LCI) Hardware Manual P/N 224186_0B NOTE The SE (working-sense) and RE (reference) leads terminate in connectors that will accept an additional pin input to make it easier to run three electrode (WE shorted into SE) experiments and two electrode (WE shorted into SE and CE shorted into RE) experiments. -
Page 9: Installation
2. INSTALLATION This chapter details how to install, calibrate, and test the LCI. 2.1. Installation 2.1.1. Connect Interface Cable to LCI Main Body Connect the interface cable (Section 1.2.1) to the LCI main body (Section 1.2.2) and secure the cable to the connector by tightening the screws until snug (do not over tighten). -
Page 10: Figure 6. Calibration Required Message
VersaSTAT LC Low Current Interface (LCI) Hardware Manual P/N 224186_0B Figure 6. Calibration Required Message This message will appear after adding the LCI option to a system, as well as after removing the LCI option. NOTE It is very important that the calibration be performed in the exact same manner as the experimental settings. -
Page 11: Figure 8. Calibrate Message
Chapter 2: Installation After a few minutes of adjusting some offsets, the following window will appear: Figure 8. Calibrate Message The configuration in Figure 9 shows where the WE, SE, and RE are connected, but the CE is not. Once connected, select “OK”... -
Page 12: Figure 11. Connect Leads Calibrate Message
VersaSTAT LC Low Current Interface (LCI) Hardware Manual P/N 224186_0B NOTE As the LCI is intended to measure ultra-low currents, it is highly recommended that all experiments (and therefore calibrations) be conducted in a shielded environment, such as a Faraday cage. Any experiments where nanoamps and lower are to be measured, a shielded environment must be used to block the electromagnetic fields that are prevalent in most all laboratory settings. -
Page 13: Lci Checkout Procedure
Chapter 2: Installation Figure 13. Calibration Complete Message The calibration will not take effect until the system is re-booted by cycling the power on the potentiostat. If “Failed Calibration” is reported by the software, double-check NOTE connections, let the system stabilize for 30 minutes, then try again. NOTE No message is displayed after a successful calibration. -
Page 14: Figure 14. Versastudio Experiment Operational Screen
VersaSTAT LC Low Current Interface (LCI) Hardware Manual P/N 224186_0B Once the data collection has finished, select all of the data points (Data>Select All) and perform a Line Fit by selecting the Line Fit button at the top of the graph. The vertex currents should be +/-10nA, and the slope should be 1.0E-7 (the inverse of which is 10Mohm). -
Page 15: Measurement Of Small Current Signals
3. MEASUREMENT OF SMALL CURRENT SIGNALS This chapter describes the issues surrounding the measurement of small current signals to include proper shielding and cell design recommendations. 3.1. Faraday Shield The LCI and corresponding potentiostat system operate near the limits of current measurement. The LCI system can resolve current in the attoamp (10-18) range. -
Page 16: Avoiding External Noise Sources
VersaSTAT LC Low Current Interface (LCI) Hardware Manual P/N 224186_0B 3.2. Avoiding External Noise Sources Always try to keep any electrochemical cell away from noise sources, regardless of current levels, but especially for low current measurements. Some common sources of noise are: •... -
Page 17: Lci Bandwidth Limits
Chapter 3: Measurement of Small Current Signals as “Code 2” in the Data View. Below is a table of time constants associated with each range where the TC>500ms. Table 2. Time Constants Current Range Time Constant 20nA 900ms 2.1s 200pA 20pA 3.4.2. - Page 18 VersaSTAT LC Low Current Interface (LCI) Hardware Manual P/N 224186_0B THIS PAGE INTENTIONALLY LEFT BLANK.
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Page 19: Specifications
4. SPECIFICATIONS 4.1. Electronic Specifications With the VersaSTAT LC option connected to the appropriate potentiostat, the following specifications are in order. All other specifications not listed default to the connected potentiostat. 4.1.1 System Performance Minimum Current Range with VersaSTATs 4pA (4 x 10 -12 A) •... -
Page 20: Standard Environmental Conditions
VersaSTAT LC Low Current Interface (LCI) Hardware Manual P/N 224186_0B 4.3. Standard Environmental Conditions This equipment is designed to meet or exceed the requirements of the following standards: • LVD: EN61010-1:1993, Amendment 2 • EMC: EN61326: 1998 Emissions • EN55011:1991, Group 1, Class A Immunity: •... -
Page 21: Warranty
5. WARRANTY Advanced Measurement Technology, Inc. a/k/a Princeton Applied Research, a subsidiary of AMETEK®, Inc. Princeton Applied Research* warrants each instrument of its own manufacture to be free of defects in material and workmanship. Obligations under this Warranty shall be limited to replacing, repairing or giving credit for the purchase price, at our...
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