Auto-Reference Mode Aref, Mode Field, M300EU | Teledyne Model 300EU

6.2.1. AUTO-REFERENCE MODE (AREF)

M300EU	M300EU OPERATING INSTRUCTIONS
(Addendum to M300EU Manual - P/N 04145)

6.2.1. AUTO-REFERENCE MODE (AREF)

One of the most significant differences between the M300E/EM and the M300EU analyzers is the auto-reference measurement feature. In this mode, the analyzer makes special measurements and calculations that are applied to the CO concentration calculation to dramatically improve interferent rejection as well as compensate t for changes in ambient temperature of the sample gas and age related drift of the optical bench components (see Section 10.1.1 for detailed information about how and when this A-REFfeature occurs).

When in A-REFmode, the analyzer:

•Freezes the CO concentration reading displayed on the front panel and output via the analog outputs or COM Ports.

•Displays the Message AUTO-REFin the mode filed of the analyzer’s front panel.

•Sets the A-REFstatus output (pin-7 on the status output connector) to high.

Mode Field

AUTO-REF RANGE = 50.000 PPM

CO =12.430

<TST TST> CAL CALZ CALS

SETUP

Figure 6-1: Typical Front Panel Display during A-REF Mode

NOTE:

Initiating a calibration through either the keyboard, the COMM ports or digital control inputs terminates

the A-REF mode.

Also, when the instrument is in calibration mode, the A-REF mode is suppressed until the instrument

exits calibration mode.

See Section 6.4 for information about changing the A-REFcycle time or manually initiating an auto-reference measurement.

05514 Rev A1

21

Image 29

Teledyne Model 300EU Auto-Reference Mode Aref, Mode Field, M300EU, AUTO-REF RANGE = 50.000 PPM, CO =12.430, Setup, Rev A1

Contents

MODEL 300EU CO ANALYZER WITH AUTO-REFERENCE ADDENDUM TO M300E/EM MANUAL P/NTELEDYNE INSTRUMENTS ADVANCED POLLUTION INSTRUMENTATION DIVISION TAPI 9480 CARROLL PARK DRIVE SAN DIEGO, CALIFORNIA USAPage USER NOTES SAFETY MESSAGESM300EU GENERAL SAFETY HAZARD Addendum to M300E/EM Manual P/N TABLE OF CONTENTS LIST OF TABLES LIST OF FIGURES APPENDIX A-4 Model 300EU Signal I/O Definitions, Revision K.6 LIST OF APPENDICES M300EU 1.1. REFERENCE NUMBERING CONVENTION 1. INTRODUCTION1.2. M300EU OVERVIEW any time the instrument is in SETUP mode M300EU 2.1. SPECIFICATIONS 2. SPECIFICATIONS, APPROVALS AND WARRANTYM300EU Basic Unit Specifications 05514 Rev A1 2.2. EPA EQUIVALENCY DESIGNATION 2.4. WARRANTY2.3. CE MARK COMPLIANCE 05831 Rev 3.1. UNPACKING THE M300EU 3. GETTING STARTED3.2. M300EU ANALYZER LAYOUT OPTICAL BENCH 3.3. ELECTRICAL CONNECTIONS 3.3.1. POWER CONNECTIONM300EU Figure 3-2 M300EU Internal Gas Flow Figure 3-3 M300EU Analog Output Connector 3.3.2. ANALOG OUTPUT ConnectionsAnalog Output Data Type Default Settings Analog Output Pin Outs 3.3.3. CONNECTING THE STATUS OUTPUTSTable 3-3 Status Output Pin Assignments Output # 3.4.1. STARTUP AND WARM UP OF THE M300EU 3.4. INITIAL OPERATION OF THE M300EU3.4.2. WARNING MESSAGES MESSAGE The Test functions available from the front panel of the M300EU are 3.4.3. FUNCTIONAL CHECK 3.5. INITIAL CALIBRATION 3.5.2. BASIC CO CALIBRATION SETUP3.5.1. PRE-CALIBRATION STABILIZATION 3.5.2.1. Calibration Gases STEP 1 - SET LIMITS 3.5.3. BASIC CO CALIBRATION PROCEDURESTEP 2 - DILUTION RATIO STEP 3 - SET CO SPAN GAS CONCENTRATION 4. FREQENTLY ASKED QUESTIONS & GLOSSARY M300EU OPTION 5. OPTIONAL HARDWARE AND SOFTWAREDESCRIPTION 300E 5.1.1. ZERO SPAN VALVES OPT 50A 5.1. CALIBRATION VALVE OPTIONS FOR THE M300EUTOLL-FREE FAX TEL E-MAIL api-sales@teledyne.com M300EU Internal Pneumatic Flow- Zero/Span Valves OPT 50A Scrubber 5.1.2. ZERO SPAN VALVES WITH IZS OPT 51BSAMPLE CHAMBER 5.1.3. Zero Span Valves with IZS and Shutoff VALVE OPT 51B 6. M300EU OPERATING INSTRUCTIONS M300EU Operating Modes 6.2. OPERATING MODESsample gas stream is being routed through the CO scrubber of the auto reference gas path SETUP 6.2.1. AUTO-REFERENCE MODE AREFMode Field AUTO-REF RANGE = 50.000 PPM Units 6.2.2. TEST FUNCTIONSTable 6-2 Test Functions Defined Parameter 6.3.1. PHYSICAL RANGE VERSUS ANALOG OUTPUT REPORTING RANGES 6.3. SETUP Æ RNGE ANALOG OUTPUT REPORTING RANGE CONFIGURATION6.3.2. ANALOG OUTPUT RANGES FOR CO CONCENTRATION ANALOG OUT SNGL DEFAULT SETTINGSDUAL AUTO This is the default reporting range mode for the analyzer To set the ranges press following keystroke sequence M300EU OPERATING INSTRUCTIONS weight/volume units CO ppb x 1.25 = CO ug/m3 CO ppm x 1.25= CO mg/m3 6.3.6. SETUP Æ RNGE Æ UNIT SETTING THE REPORTING RANGE UNIT TYPEPressure STP Consult your local regulations for the STP used by your agency 6.4.1. ADJUSTING THE A-REF MODE CYCLE TIME To manually start an auto-reference measurement cycle, press 6.4.2. FORCING AN AUTO-REFERENCE MEASUREMENT 05514 Rev A1 Table 6-3 Test Functions Defined 6.5. SETUP Æ MORE Æ VARS INTERNAL VARIABLES VARSVARIABLE DESCRIPTION DIAG I/O 6.6. SETUP Æ MORE Æ DIAG USING THE DIAGNOSTICS FUNCTIONSDIAG AOUT DIAG AIO 6.7.1. ANALOG I/O CONFIGURATION 6.7. ANALOG OUTPUT CONFIGURATIONTHE ANALOG I/O CONFIGURATION SUBMENU DIAG - Analog I/O Functions 4. Choose a Test Channel parameter to be output on the channel TURNING THE ANALOG OUTPUT OVER-RANGE FEATURE ON/OFF ANALOG OUTPUT SIGNAL TYPE AND RANGE SELECTION6.13.5.7 SETTING THE REPORTING RANGE SCALE FOR AN ANALOG OUTPUT 6.13.5.8 SETTING DATA UPDATE RATE FOR AN ANALOG OUTPUT MANUAL CALIBRATION OF ANALOG OUTPUT CONFIGURED FOR VOLTAGE RANGES 6.7.2. CALIBRATION OF THE ANALOG OUTPUTSENABLING OR DISABLING THE AUTO-CAL FOR AN INDIVIDUAL ANALOG OUTPUT AUTOMATIC ANALOG OUTPUT CALIBRATION Test Channels Functions Available on the M300EU’s Analog Output 6.7.3. SELECTING A TEST CHANNEL FUNCTION FOR OUTPUT A4TEST CHANNEL ZERO Table 6-7 M300EU Hessen GAS ID List 6.7.4. HESSEN PROTOCOL Default Hessen Status Bit Assignments manual for troubleshooting tips MANUAL CALIBRATION 7. CALIBRATION PROCEDURESREQUIRED EQUIPMENT, SUPPLIES AND EXPENDABLES STEP3 - ZERO/SPAN CALIBRATION 7.9.2 CO2 SENSOR CALIBRATION PROCEDURE 7.9.1 SECTION O2 SENSOR CALIBRATION PROCEDUREMANUAL CALIBRATION WITH ZERO/SPAN VALVES MANUAL CALIBRATION CHECKS WITH ZERO/SPAN VALVES 8. EPA PROTOCOL CALIBRATION M300EU 9.1. PERFOMING AN AUTO-REFERENCE MEASUREMENT AFTER MAINTENANCE 9. INSTRUMENT MAINTENANCE M300EU STABILITY Table 9-1 M300EU Test Function RecordCO MEAS MR RATIO M300EU 10.1. MEASUREMENT METHOD 10. THEORY OF OPERATION10.1.1. AUTO-REFERENCE RATIO Figure 10-1 M300EU Gas flow during Auto-Reference Measurements 10.2.1. THE A-REF CARBON MONOXIDE SCRUBBER 10.2. PNEUMATIC OPERATIONFigure 10-2 Auto-Reference Measurement Cycle This includes calibration gases such as zero air and span gas 10.2.3. THE NAFION→ DRYER 10.2.2. THE A-REF VALVE ASSEMBLYAuto-Reference Valve Operating States Figure 10-3 Semi-Permeable Membrane Drying Process The dryer consists of a bundle of 0.030 O.D. Nafion→ tubes housed within a single large tube shell. Sample gas flows within the Nafion tubes while water vapor absorbs into the tubular membrane walls and is removed. Moisture permeating the tubing is carried away by a dry purge gas within the shell that flows countercurrent to the sample gas 10.3.1. OVERVIEW 10.3. ELECTRONIC OPERATIONFigure 10-4 M300EU Electronic Overview Block Diagram Aout Figure 10-5 M300EU Heating Control Block Diagram 10.3.2. THE RELAY PCA10.3.2.1. Temperature Control of the Convection Oven 115 VAC Configuration 10.3.2.2. Oven Heaters AC Power Configuration230 VAC Configuration Figure 10-6 M300EU Oven Heater Configuration Jumpers 10.3.2.3. Status LED’s 10.3.3. MOTHERBOARD10.3.3.1. A to D Conversion 10.3.3.2. Sensor Inputs Figure 10-8 M300EU Distribution Block Diagram 10.3.4. POWER DISTRIBUTIONRELAY PCA Page 11.1. GENERAL NOTES 11. TROUBLESHOOTING & REPAIRMAINTENANCE PERSONNEL ONLY PROCEDURES Table continued on next page 11.2. FAULT DIAGNOSIS WITH WARNING MESSAGESWarning Messages - Indicated Failures Sample flow rate is Warning Messages - Indicated Failures cont Table 11-2 Test Functions - Indicated Failures 11.2.1. FAULT DIAGNOSIS WITH TEST FUNCTIONStable continued INDICATED FAILURES Values outside range indicate Test Functions - Indicated Failures Faulty Connectors/Wiring 11.2.2. RELAY BOARD STATUS LED’STable 11-3 Relay Board Status LED Failure Indications Voltage displayed should change. If not 11.4.1. Unexplained DRIFT 11.3. GAS FLOW PROBLEMS11.4. OTHER PERFORMANCE PROBLEMS 11.5.1. RELAY BOARD 11.5. SUBSYSTEM CHECHOUT11.5.2. MOTHERBOARD 11.5.2.1. A/D Functions 11.6. TECHNICAL ASSISTANCE M300EU APPENDIX A-2 M300EU Setup Variables Available Via Serial I/O APPENDIX A - Version Specific Software DocumentationAPPENDIX A-4 M300EU Signal I/O Definitions M300EU Addendum to M300E/EM Manual MSG1 CLR1TEST1 Figure A-2 Primary Setup Menu Except iDAS Figure A-3 Primary Setup Menu Æ iDAS Submenu Figure A-4 Secondary Setup Menu Æ COMM and VARS Submenus Figure A-5 Secondary Setup Menu Æ Hessen Protocol Submenu Auto Cal feature is OFF or the range is set for ENTER PASSWORDFigure A-6 DIAG Menu Press ENTR Table continues APPENDIX A-2 Setup Variables For Serial I/O, Revision K.6APPENDIX A-2 Setup Variables For Serial I/O, Revision K.6 CO2FILTPCT STDO2CELLTEMP A-10O2FILTPCT NAME APPENDIX A-3 Warnings and Test Functions, Revision K.6MESSAGE TEXT A-11 A-12 Table A-5These gases not applicable to the M300EU These gases not applicable to the M300EU Bit or Channel Signal NameDescription Number A-14 APPENDIX A-5 M300EU iDAS Parameters Revision K.6OVTMPW Internal box temperature #2/oven warning CO2OFS A-15O2SLPE O2OFST A-16 APPENDIX A-6 Terminal Command Designators, Revision K.6 APPENDIX B - M300EU SPARE PARTS & EXPENDABLES APPENDIX B - M300EU SPARE PARTS & EXPENDABLESEuropean standard EN 05925 Rev A M300EU Addendum to M300E/EM Manual