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BGA244 Binary Gas Analyzer User Manual Revision 1.10 Certification Stanford Research Systems certifies that this product met its published specification at the time of shipment. Warranty This Stanford Research Systems product is warranted against defects in materials and workmanship for a period of one (1) year from the date of shipment. Service For warranty service or repair, this product must be returned to a Stanford Research Systems authorized service facility. Contact Stanford Research Systems or an authorized representative for a RMA (Return Material Authorization) Number before returning this product for repair. These are available at www.thinksrs.com under Support, Repair/Calibration. All users returning a BGA244 back to the factory for repair and/or service must submit a correctly completed “Declaration of Contamination of Equipment” form, available as part of the RMA process. The SRS personnel carrying out repair and service of the BGA244 must be informed of the condition of the components prior to any work being performed. Warning All returns to SRS must be free of harmful, corrosive, radioactive or toxic materials. Dedication In memory of Jim Williams, 1948 - 2011: Legendary Author and Analog Design Guru Information in this document is subject to change without notice. Copyright © Stanford Research Systems, Inc., 2016-2018. All rights reserved. Stanford Research Systems, Inc. 1290-C Reamwood Avenue Sunnyvale, California 94089 Phone: (408) 744-9040 Fax: (408) 744-9049 Email: [email protected] www.thinksrs.com Printed in the USA Stanford Research Systems BGA244 Binary Gas Analyzer Table of Contents i Contents Contents i Tables viii Figures ix Safety Procedures and Precautions x Symbols You May Find on SRS Products xii Specifications xiii Manual Convention xviii Unit Conventions and Abbreviations xx How this Manual is Organized xxi Chapter 1: Getting Started 1 Binary Gas Analyzers 1 What is a Binary Gas Analyzer? 1 Uses for Binary Gas Analyzers 2 Features and Accessories 3 Display 3 Electrical Connections 3 Accessories 4 Unpacking 8 Quick Start 9 Quick Test 9 Installation and Configuration 10 Chapter 2: Installation Guide 13 Operating Environment 13 Access 14 Installation 15 Gas Fittings 16 BGA244 16 Gas Fitting Adapters 17 BGA244HP 18 Electrical Connections 19 Electrical Noise Precautions 19 Grounding 19 Electrical Connectors 20 Connector Pinouts 20 Terminal Strip Connectors 21 Power 22 Stanford Research Systems BGA244 Binary Gas Analyzer Table of Contents ii Computer Interfaces 24 Analog I/O Connections 26 Event Relays 30 Pressure Transducers 31 Mounting Location 31 Types of Pressure Transducers 31 Chapter 3: Operation Guide 35 BGA244 User Interface 35 Navigation 35 Help Screens 35 Map of Interface Functions 36 Power On 37 Appearance 38 Binary Gas Analyzer 40 Details 42 Gas Purity Analyzer 44 Details 46 Physical Measurements 47 Details 49 Screen Messages 50 Analysis Messages 50 Other Messages 51 LED Blink Codes 53 Controls 54 Limits 54 Scale (Binary & Gas Purity) 55 Pressure (Physical Measurements) 55 Help 55 Event Relay 1 & 2 55 Setup 57 Setup 58 Run|Stop 58 Instrument Mode 58 Selecting Gases 58 REL 61 Pressure 63 Temperature 66 Store|Recall 66 Default Setup 68 Control Panel 72 Display 72 Units 73 Stanford Research Systems BGA244 Binary Gas Analyzer Table of Contents iii Measurement 74 Status 76 Heater 77 Computer I/O 78 Analog I/O 80 Faults 84 Alerts 86 Message Log 88 Self Test 88 Password 90 About the BGA244 90 Hardware Reset 91 User Gases 91 Updating Firmware 91 Chapter 4: Application Guide 93 Gases 93 Gas Requirements 93 Gases that should be used with caution 94 Unusual Gas Properties 94 Condensation 95 Water Vapor in Air 96 Pressure 98 Operating Pressure 98 Pressure Effects in Gases 98 Minimum Operating Pressures 99 Ambient Pressure Variation 100 Operating Conditions 101 Interference 103 Measurements 104 Temperature Variations 104 Evacuating Cell 104 Using Averaging 104 REL to a Reference Gas 105 Binary Gas Analyzer vs Gas Purity Analyzer 107 When to use the Binary Gas Analyzer 107 When to use the Gas Purity Analyzer 107 Converting Molar Fraction vs Mass Fraction 108 Accuracy & Stability 109 Estimated Accuracy 110 Binary Gas Measurement Accuracy 110 Gas Purity Measurement Accuracy 112 Stanford Research Systems BGA244 Binary Gas Analyzer Table of Contents iv Long Term Stability 112 High Purity Use 113 Fittings and tubing 113 Leak Testing 113 Dead Volumes 113 Outgassing 113 Degas 114 User Gases 116 User Gas Parameters 117 Adding a User Gas with BGAMon 118 Adding a User Gas over a Computer Interface 118 Adding Gases 119 Chapter 5: BGAMon 123 Installation 124 Drivers 124 Downloading BGAMon 124 BGAMon Quick Start 125 Using BGAMon 126 Menu Bar 126 System Area 127 Instrument Page 128 Status Bar 128 Instrument Pages 129 Snapshot 129 Analog I/O 130 Pressure 131 Limits 132 Events 132 Strip Chart 133 Gas Selection 138 Faults/Alerts 140 Computer I/O 140 Store / Recall 141 Loading and Saving Configurations 142 Updating Firmware 143 Troubleshooting BGAMon 144 Chapter 6: Remote Programming 145 Introduction 145 Interface Configuration 145 Front-Panel Indicators 145 Transmit and Receive Buffers 145 Stanford Research Systems BGA244 Binary Gas Analyzer Table of Contents v Break Signal 146 USB 146 RS-232 146 RS-422 147 Command Syntax 148 Parameter Conventions 148 Numeric Conventions 149 Measurement Errors 149 Missing Power Supplies 149 Abridged Index of Commands 150 Detailed Command List 154 Common IEEE-488.2 Commands 154 Instrument Status Commands 157 Interface Commands 164 Measurement and Related Commands 165 Configuration Commands 171 Analog I/O Commands 178 Miscellaneous Commands 184 Status Byte Definitions 188 Serial Poll Status Byte 189 Standard Event Status Register 189 Instrument Status Register Model 189 Event Status Register 192 Error Codes 193 Execution Errors 193 Query Errors 194 Parsing or Command Errors 194 Communication Errors 195 Other Errors 195 Using the USB Drivers 196 Chapter 7: Service 197 Troubleshooting 197 Power On 197 Self Tests 198 System Faults 199 Alerts 200 Screen Messages 201 Factory Safe Mode 203 Locked 204 Store and Recall Failure 204 Touchscreen Problems 205 Hardware Reset 205 Stanford Research Systems BGA244 Binary Gas Analyzer Table of Contents vi Installing BGA-M 206 Maintenance 207 Replacing Gas Fittings 207 Replacing Gas Fittings for the BGA244E 208 Terminal Strips 209 Cleaning 209 Calibration 210 Performance Verification 210 Self Test 210 Analog I/O Accuracy 211 Measurement Accuracy 215 Chapter 8: Circuit Description 217 Overview 217 Block Diagram 217 Detailed Circuit Description 219 Main Circuit Board 219 Microphone Board 225 Speaker Board 229 Industrial Board 230 Control Board 231 Appendix A: Gas Table 235 Factory Gas Table 235 Gas Table Properties 246 References 255 Appendix B: BGA244E 257 Operation 257 Environment 257 Access 258 Unpacking 259 Quick Start 259 Installation 260 Mounting 260 Gas Fittings 261 Conduit 262 Electrical 262 Appendix C: Mechanical Drawings 265 Appendix D: Declaration of Contamination 269 Stanford Research Systems BGA244 Binary Gas Analyzer Table of Contents vii Appendix E: Installing USB Drivers 271 Appendix F: Parts List 273 Appendix G: Schematics 281 Appendix H: Revisions 297 Stanford Research Systems BGA244 Binary Gas Analyzer Table of Contents viii Tables Table 1: Gas Fitting Adapters ...................................................................................................................... 5 Table 2: Gas Fitting Adapters .................................................................................................................... 17 Table 3: C3: RS-232.................................................................................................................................... 20 Table 4: C4: RS-422.................................................................................................................................... 20 Table 5: C5: +24V....................................................................................................................................... 21 Table 6: C6: Measure Out.......................................................................................................................... 21 Table 7: C7: Analog I/O.............................................................................................................................. 21 Table 8: C8: Relay Contacts ....................................................................................................................... 21 Table 9: Active Parameters ....................................................................................................................... 68 Table 10: Inactive Parameters ................................................................................................................... 70 Table 11: External Power Supply Faults .................................................................................................... 84 Table 12: System Faults ............................................................................................................................. 85 Table 13: Analog I/O Alerts ....................................................................................................................... 86 Table 14: Temperature Alerts ................................................................................................................... 87 Table 15: General Alerts ...........................................................................................................................
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