Teledyne 7300A manual Logging Out, System Self-Diagnostic Test

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Infrared Gas Analyzer

Operation 4

 

 

 

 

 

 

 

 

 

When you have finished typing the new password, press Enter. A verifica- tion screen appears. The screen will prompt you to retype your password for verification.

Enter PWD To Verify:

A A A

Use the UP/DOWN key to retype your password and use ENTER to

scroll through the letters, and last enter will complete verification. Your password will be stored in the microprocessor and the system will immediately switch to the Analyze screen, and you now have access to all instrument functions.

If all alarms are defeated, the Analyze screen appears as:

1.95% CO2

nR1: Ø — 1Ø Anlz

If an alarm is tripped, the second line will change to show which alarm it is:

1.95% CO2

AL—1

NOTE:If you log off the system using the LOGOUT function in the MAIN MENU, you will now be required to reenter the password to gain access to Alarm, and Range functions.

4.3.4 Logging Out

The LOGOUT function provides a convenient means of leaving the analyzer in a password protected mode without having to shut the instrument off. By entering LOGOUT, you effectively log off the instrument leaving the system protected against use until the password is reentered. To log out, scroll to field of LOGOUT function, and ENTER to logout The screen will display the message:

Protected until password entered

4.3.5 System Self-Diagnostic Test

The Model 7300A has a built-in self-diagnostic testing routine. Prepro- gramming signals are sent through the power supply, output board, preamp board and sensor circuit. The return signal is analyzed, and at the end of the test the status of each function is displayed on the screen, either as OK or as a number between 1 and 1024. (See System Self Diagnostic Test in chapter 5 for number code.) If any of the functions fails, the System Alarm is tripped.

Note: The sensor will always show failed unless identical gas is present in both channels at the time of the SELF-TEST.

Teledyne Analytical Instruments

4-9

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Contents Teledyne Analytical Instruments Model 7300ACopyright 2000 Teledyne Analytical Instruments Model 7300AApplication Impurity of Interest Infrared Gas Analyzer Technician Record SheetModel 7300A Teledyne Analytical Instruments Model 7300A Table of Contents Introduction InstallationModel 7300A Infrared Gas Analyzer Table of Contents Start-up and Theory of OperationOperation Electrical/Control Unit Modes/Functioning Appendix MaintenanceOverview Typical Gas ApplicationsInfrared Gas Analyzer Introduction Main Features of the Analyzer GeneralIntroduction Model 7300A Ndir Analyzer Introduction Model 7300A Teledyne Analytical Instruments Installing and Connecting the Analyzer Infrared Gas Analyzer InstallationUnpacking the Analyzer/Inspection Electrical Power Connections Installation Model 7300AUser Connections Calibration GasesElectrical Connections Rear Panel Infrared Gas Analyzer Installation Pipe ConnectionsSample Delivery System Venting the SystemFuse Installation Installation Model 7300A Primary Input Power3 50-Pin Equipment Interface Connector Analog OutputsPin Function ExamplesOutput V dc Output mA dc Range Voltage Current mA Application Alarm RelaysDigital Remote Cal Inputs Pin ContactRemote Calibration Connections Remote Valve Connector Range ID RelaysNetwork I/O FET Series Resistance 4 RS-232 PortCommand Description Parameter SettingGas Requirements Testing the System Calibration Calibration FluidsCalibration Infrared Gas Analyzer Installation Installation Model 7300A Teledyne Analytical Instruments Ndir Analyzer Startup PreliminaryInitial Set-up and Zeroing Infrared Gas Analyzer Start-up and OperationStart-up and Theory of Operation Model 7300A Operational CalibrationAnalyzer Theory of operation GeneralBlock Diagram of the Model 7300A Electronics Circuit Description Digital Signal Processing & Electronics Linearizer Linearizer Output Linearizer Input Teledyne Analytical Instruments Page Infrared Gas Analyzer Operation IntroductionAnalysis Mode Using the ControlsOperation Model 7300A Mode/Function SelectionSetup Mode Setup Mode Data Entry EnterEscape Enter Setting up an AUTO-CALEntering the Password Infrared Gas Analyzer Operation Password ProtectionAAA Installing or Changing the PasswordLogging Out System Self-Diagnostic TestChecking Linearity with Algorithm Model ScreenTroubleshooting information Digital Filter Setup Zero Offset Adjustment CAL-OUT Function Adjst output to 4ma ENT to OK Zero Cal Zero and Span FunctionsAuto Mode Zeroing Cell Failure Manual Mode ZeroingSpan Cal Auto Mode SpanningManual Mode Spanning Installation Alarms FunctionPress enter again to set the alarm setpoints Manual Select/Define Range Screen Range Select FunctionAuto Screen Precautions Illustrates these schemes graphically Analyze FunctionSet Application Screen ProgrammingOFFST/INVRT ENT Checking the linearization Curve Algorithm ScreenManual Mode Linearization Auto Mode Linearization Offset OUTPUT/Reversal Output Output Signal Reversal Special Function SetupPolarity Reversal Output Signal OffsetGain Preset Infrared Gas Analyzer Maintenance MaintenanceRoutine Maintenance Maintenance Model 7300AFilter Ndir Analyzer Measurement Cell System Self Diagnostic TestMajor Internal Components PowerAnalog PreampCell Assembly Troubleshooting General Trouble Shooting Chart Maintenance Model 7300A Infrared Gas Analyzer Maintenance Maintenance Model 7300A Teledyne Analytical Instruments Infrared Gas Analyzer Appendix Specifications Drawing ListAppendix Model 7300A Qty Description Recommended 2-Year Spare Parts ListAttachment 7300A Infrared Gas Analyzer Appendix