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Teledyne 200AH 9.2.4. Negative Output , 9.2.5. Excessive Noise

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Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2

9-26

2. Check instrument electronics.

A. Do ELEC TEST procedure in DIAGNOSTIC menu Section 9.1.3.2.

B. Do OPTIC TEST procedure in the DIAGNOSTIC menu Section 9.1.3.3.

If the M200AH passes ET and OT that means the instrument is capable of detecting light and

processing the signal to produce a reading. Therefore the problem is in the pneumatics.

3. Check ozone generator subsystem. Do diagnostic test of ozone generator subsystem, see

Section 9.3.6.

9.2.4. Negative Output

1. Miss-calibration. The 'zero' gas that was used to zero the M200AH contained some NO gas -

that is it had more NO gas than that of the sample air. Also, doing a zero calibration using

sample air.

2. Reaction cell contamination - If NO/NOX OFFSET - TEST functions are greater than 50 mV,

this indicates reaction cell contamination.

3. Check for leaks.

4. Corruption of the AutoZero filter. If a significant signal was detected during the AutoZero

cycle, that higher reading can enter the AutoZero filter. The value of the AutoZero filter is

subtracted from the current reading, thus producing a negative reading. High AutoZero

readings can be caused by:

A. Leaking AutoZero valve.

B. Electronic fault in the preamp causing it to have a voltage on the PMT output pin during

the AutoZero cycle.

C. Reaction cell contamination causing high background (>40 mV) light readings.

D. Broken PMT temperature control circuit, allowing a high zero offset.

After fixing the cause of the high AutoZero readings, the M200AH will take 15 minutes for the

filter to clear itself.

9.2.5. Excessive Noise

Common reasons for excessive noise are:

1. Leak in pneumatic system.

2. Light leak - check the sensor module with strong light. Check for missing 0-rings in Sensor

Assembly.

Contents

Main INSTRUCTION MANUAL MODEL 200AH NITROGEN OXIDES ANALYZER Page SAFETY MESSAGES Page Table of Contents 3. SPECIFICATIONS, WARRANTY.................................................................. 3-1 4. THE M200AH NOX ANALYZER................................................................... 4-1 6. OPTIONAL HARDWARE AND SOFTWARE................................................ 6-1 7. CALIBRATION AND ZERO/SPAN CHECKS ...............................................7-1 9. TROUBLESHOOTING AND ADJUSTMENTS.............................................. 9-1 Page Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 vii LIST OF FIGURES Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 viii LIST OF TABLES Page Page 1. HOW TO USE THIS MANUAL Page 2. GETTING STARTED 2.1. Unpacking 2.2. Electrical and Pneumatic Connections Page Page Page Page Page 2.3. Initial Operation Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 2-8 Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 2-9 Step 2 - Calibrate the instrument for NOX: Zero/Span Calibration Procedure Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 2-10 Zero/Span Calibration Procedure (Continued) Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 2-11 Step 3 - Review Quality of calibration: Calibration Quality Check Procedure Step 4 - The M200AH is now ready to measure sample gas. Page Page Page Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 2-15 Table 2-1: Final Test and Calibration Values (table continued) Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 2-16 Table 2-1: Final Test and Calibration Values (Continued) Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 3-1 3. SPECIFICATIONS, WARRANTY 3.1. Specifications NOX Specifications O2 Option 3.2. Warranty 4. THE M200AH NOX ANALYZER 4.1. Principle of Operation 4.1.1. NOX Measurement hv NO * NO 4.1.2. Oxygen Measurement (Option) Page Page 4.2. Operation Summary 4.2.1. NOX Sensor Module, Reaction Cell, Detector 4.2.2. Oxygen Sensor Module (Option) 4.2.3. Pneumatic Sensor Board 4.2.4. Computer Hardware and Software 4.2.5. V/F Board 4.2.6. Front Panel 4.2.7. Power Supply Module 4.2.8. Pump, Valves, Pneumatic System Page Page 4.2.9. Ozone Generator 4.2.10. NO2 - NO Converter Page 5. SOFTWARE FEATURES 5.1. Index to Front Panel Menus Page Page Page Page Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 5-6 5.1.1. Sample Menu Table 5-1: M200AH Sample Menu Structure Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 5-7 5.1.2. Set-Up Menu Table 5-2: M200AH Setup Menu Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 5-8 Table 5-2: M200AH Setup Menu (Continued) Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 5-9 Table 5-3: M200AH Setup Menu Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 5-10 Table 5-4: M200AH Setup Menu 5.2. Sample Mode 5.2.1. Test Functions Page Page Page 5.2.2. CAL, CALS, CALZ, Calibration Functions Page 5.3. Set-Up Mode 5.3.1. Configuration Information (CFG) 5.3.2. Automatic Calibration (AutoCal) 5.3.3. Data Acquisition System (DAS) Page 5.3.4. Range Menu Page Page 5.3.5. Password Enable 5.3.6. Time of Day Clock 5.3.7. Diagnostic Mode Page 5.4. M200AH Operating Modes 5.4.1. NO/NOx/NO2 Switching Mode 5.4.2. NOX Only Mode 5.4.3. NO Only Mode 5.5. 4-20 mA Current Loop 5.6. Status Output 5.7. RS-232 Interface 5.7.1. Setting up the RS-232 Interface Page Page 5.7.2. Command Summary Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 5-32 Table 5-12: RS-232 Command Summary Page Page Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 5-35 5.7.3. TEST Commands and Messages Table 5-15: RS-232 Test Messages 5.7.4. WARNING Commands and Messages 5.7.5. CALIBRATION Commands and Messages 5.7.6. DIAGNOSTIC Commands and Messages 5.7.7. DAS Commands and Messages Page 5.7.8. VARIABLES Commands and Messages Page 6. OPTIONAL HARDWARE AND SOFTWARE 6.1. Rack Mount Options 6.2. Zero/Span Valves Option Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 6-3 6.2.1. Autocal - Setup Zero/Span Valves Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 6-4 Table 6-3: Action of MODE Field in AutoCal 6.3. Oxygen Sensor Option 6.4. Isolated 4-20 mA Current Loop Option 6.5. Molybdenum Converter Option 6.6. External Desiccant Canister Option 6.7. Alternate Bypass Flow Orifice Option 6.8. M501 External Converter Option Page 7. CALIBRATION AND ZERO/SPAN CHECKS Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 7-2 Table 7-1: Types of Zero/Span Check and Calibration 7.1. Manual NOX Zero/Span Check or Cal With Zero/Span Gas in the Sample Port Page Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 7-5 Table 7-4: Manual Span Calibration Procedure - Span Gas Thru Sample Port 7.2. Manual O2 Zero/Span Check or Cal With Zero/Span Gas in the Sample Port 7.3. Manual Zero/Span Check with Zero/Span Valves Option Page 7.4. Dynamic Zero/Span Calibration Using AutoCal 7.5. Use of Zero/Span Valves with Remote Contact Closure 7.6. NO Only Mode Calibration 7.7. NOX Only Mode Calibration 7.8. Calibration Requirements for AutoRange or Remote Range 7.9. Calibration Requirements for Independent Range 7.10. Calibration Quality 7.11. Converter Efficiency Compensation 7.12. Recommendations for CEM Applications 7.12.1. Calibration Gasses 7.12.2. Calibration Frequency 7.12.3. Converter Efficiency Page 8. MAINTENANCE 8.1. Maintenance Schedule 8.2. Replacing the Sample Particulate Filter Page 8.3. Replacing the Converter Page 8.4. Cleaning the Reaction Cell Page Page 8.5. Pneumatic Line Inspection Page Page Page 8.6. Leak Check Procedure 8.7. Light Leak Check Procedure 8.8. Prom Replacement Procedure 9. TROUBLESHOOTING AND ADJUSTMENTS 9.1. Operation Verification - Diagnostic Techniques 9.1.1. Fault Diagnosis with TEST Variables Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 9-3 Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 9-4 Table 9-1: Test Functions (Continued) Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 9-5 Table 9-1: Test Functions (Continued) Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 9-6 Table 9-1: Test Functions (Continued) Test Function Factory Set-Up Comment Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 9-7 Table 9-1: Test Functions (Continued) Test Function Factory Set-Up Comment 9.1.2. Fault Diagnosis with WARNING Messages Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 9-9 Table 9-2: Front Panel Warning Messages 9.1.3. Fault Diagnosis using DIAGNOSTIC Mode Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 9-11 Table 9-3: Summary of Diagnostic Modes Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 9-12 9.1.3.1. Signal I/O Diagnostics Table 9-4: Diagnostic Mode - Signal I/O Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 9-13 Table 9-4: Diagnostic Mode - Signal I/O (Continued) Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 9-14 Table 9-4: Diagnostic Mode - Signal I/O (Continued) Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 9-15 Table 9-4: Diagnostic Mode - Signal I/O (Continued) Page 9.1.4. M200AH Internal Variables Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 9-18 Table 9-5: Model 200AH Variables Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 9-19 9.1.5. Test Channel Analog Output 9.1.6. Factory Calibration Procedure Page Page Page 9.2. Performance Problems 9.2.1. AC Power Check 9.2.2. Flow Check 9.2.3. No Response to Sample Gas 9.2.4. Negative Output 9.2.5. Excessive Noise 9.2.6. Unstable Span 9.2.7. Unstable Zero 9.2.8. Inability to Span 9.2.9. Inability to Zero 9.2.10. Non-Linear Response 9.2.11. Slow Response 9.2.12. Analog Output Doesn't Agree With Display Concentration 9.3. Subsystem Troubleshooting and Adjustments 9.3.1. Computer, Display, Keyboard Page Page 9.3.2. RS-232 Communications Page Page 9.3.3. Voltage/Frequency (V/F) Board Page Page Page Page Page 9.3.4. Status/Temp Board Page 9.3.5. Power Supply Module Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 9-46 Table 9-9: Power Supply Module Subassemblies Page Page 9.3.6. Ozone Generator Page Page Page 9.3.7. Flow/Pressure Sensor Page Page Page Page 9.3.8. NOX Sensor Module Page Page Page Page 9.3.9. Z/S Valves 9.3.10. Pneumatic System Teledyne API Model 200AH NOX Analyzer Instruction Manual, 06492, Rev. G2 A-1 APPENDIX A ELECTRICAL SCHEMATICS Table A-1: Electrical Schematics Page APPENDIX B SPARE PARTS AND EXPENDABLES Page Page SPARE PARTS LIST LEVEL 1 SPARES KIT (WITH MINI-HICON CONVERTER) LEVEL 1 SPARES KIT (WITH MOLYBDENUM CONVERTER)