Teledyne 200AH 5.7. RS-232 Interface

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

5-28

5.7. RS-232 Interface

The RS-232 communications protocol allows the instrument to be connected to a wide variety of

computer based equipment. The interface provides two basic functions in the M200AH.

1. First is a comprehensive command interface for operating and diagnosing the analyzer. The

command set can be used interactively or operated via stored program. This interface has, in

fact, more capabilities than the front panel keyboard.

2. The interface can provide an audit trail of analyzer events. In this function the port sends out

messages about instrument events like calibration or warning messages. If these messages are

captured on a printer or remote computer, they provide a continuous audit trail of the

analyzers operation and status.

5.7.1. Setting up the RS-232 Interface

The baud rate is set from the front panel by SETUP-MORE-COMM-BAUD. Select the baud rate

appropriate for your application from 300 to 19,200. It is important to note that the other device

must have identical settings in order for the communications to work correctly.

Second is physical wiring of the analyzer to the other unit. We have incorporated into the

Analyzer LED's that signal the presence of data on the communications lines, and also a switch

which can easily re-configure the analyzer from DCE to DTE if necessary. In addition, the front

panel diagnostics allow test data streams to be sent out of the port on command. This flexibility

and diagnostic capability should simplify attaching our equipment to other computers or printers.

If problems occur, see the Troubleshooting Section 9.3.2.

Setup from the Front Panel

There are 3 additional RS-232 setups that can be done via the front panel.

1. Set the Instrument ID number by SETUP-MORE-COMM-ID, and enter a 4 digit number

from 0000-9999. This ID number is part of every message transmitted from the port.

2. Set the BAUD rate by SETUP-MORE-BAUD, then select the desired BAUD rate.

3. Set the RS-232 mode bit field in the VARS menu. To get to the variable press, SETUP-

MORE-VARS and scroll to RS-232_MODE, then press EDIT. The possible values are:

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)