Routine Maintenance, Sensor Replacement | Teledyne 3000ZA-3X

Trace Oxygen Analyzer	Maintenance

Maintenance

5.1 Routine Maintenance

Aside from normal cleaning and checking for leaks at the gas connections, routine maintenance is limited to replacing the sensors and fuses, and recalibration. For recalibration, see Section 4.4 Calibration.

WARNING: SEE WARNINGS ON THE TITLE PAGE OF THIS

MANUAL.

5.2 Sensor Replacement

The ZrO2 sensors are sealed transducers with no electrolyte to change or electrodes to clean. When the sensor reaches the end of its useful life, it is replaced. The spent sensor should be discarded according to local regulations.

5.2.1 Removing the Sensor

The ZrO2 sensors is located inside the nylon cell block behind the front panel.

To remove an existing cell (refer to Figure 5-1):

CAUTION: POWER IS APPLIED TO THE INSTRUMENT CIRCUITRY WHENEVER THE INSTRUMENT IS CONNECTED TO THE POWER SOURCE. THE RED SWITCH ON THE FRONT PANEL IS FOR SWITCHING POWER ON OR OFF TO THE DISPLAYS AND OUTPUTS ONLY.

1.Remove power to the instrument by unplugging the power cord at the power source.


Teledyne Analytical Instruments	45

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Teledyne 3000ZA-3X operating instructions Routine Maintenance, Sensor Replacement, Removing the Sensor

Contents

Model 3000ZA-3X 3000ZA-3X Specific Model Information Important Notice Safety Messages 3000ZA-3X Vii Table of Contents Testing the System Appendix Maintenance Model 3000ZA Rear Panel Model 3000ZA Front Panel Xii List of Tables Introduction Main Features of the AnalyzerOverview Typical Applications Introduction 3000ZA-3X Model Designations Model 3000ZA Front Panel Front Panel Operator Interface Data Entry Keys Function KeysDigital Meter Display Alphanumeric Interface Screen Access Door Rear Panel Equipment InterfaceStandby Button Optional ∙ 50-Pin Equipment Interface Port Introduction Operational TheoryZrO2 Sensor Principles of Operation Operational Theory 3000ZA-3X Sample System Zirconium Oxide Sensor Application Notes Electronics and Signal Processing Operational Theory 3000ZA-3X Component Location Electronic Block Diagram Installation Unpacking the AnalyzerMounting the Analyzer Installation 3000ZA-3X Gas Connections Rear Panel Connections Installation3000ZA-3X Electrical Connections Zero in and Span in Optional Equipment Interface Connector Pin Arrangement Analog Output Connections Threshold Alarm Alarm Relay Contact Pins System Alarm Remote Calibration Connections Range ID Relay Connections Remote Probe Connections 2.3 RS-232 Port FET Series Resistance Commands via RS-232 Input Testing the System Installing the Zirconium Oxide Sensors Operation Using the Data Entry and Function Buttons Style ConventionsKeys Description Escape Enter Menu/Screen Structure Analyze ScreenSystem Menu Hierarchy of Available Functions Enter Password T a Password routineChange Password Enter New Password T a Model Routine Logout Routine Analog-Out Adjust Routine Self-Test RoutineFilter Routine 20mA Gain 20mA Limit False Track in Cal Yes Auto-Calibration Timer Span MenuChange Stream Span Timer Span SensorSpan Value Span Auto Finish Span FinishSpan Begin Span Begin Begin Span? Zero Menu Zero FinishZero Value Zero Timer 7 min Zero TimerZero Begin Zero Begin Begin Zero? Alarm Active Alarms MenuAlarm Polarity AL-1 NON-LATCHING AL-1 20.00 ppm AL-2 Active Alarm Latching Alarm FailsafeAlarm Setpoint AL-1 80.00 ppm Range Menu Range SelectRange Select Auto Range Setpoints Manual Range Select Routine Maintenance MaintenanceSensor Replacement Removing the Sensor Maintenance 3000ZA-3X Sensor Block with Middle Sensor Installed Fuse Replacement Self-Test Result Display System Self Diagnostic Test Rear Panel Removal Remove only those screws marked with an Major Internal Components Troubleshooting Cleaning Trace Oxygen Analyzer Maintenance Maintenance 3000ZA-3X Teledyne Analytical Instruments Appendix Specifications Operating Temperature 5-35 C Qty Part Number Description Recommended 2-Year Spare Parts List 19-inch Relay Rack Panel Mount Drawing List Flow Rate Recommendations Application Notes Restriction Devices BY-PASS Conversions