Teledyne 460H Operation, Front Panel Display, 4.1.1 O3 readout, Pressure Display, Status LED’s

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4.0 Operation

4.0 Operation

The M460H has been designed for simple and trouble-free operation. The Sections below detail the operational features of the M460H.

4.1Front Panel Display

4.1.1O3 readout

The current ozone concentration is displayed in the 4 digit readout in the center of the display. The concentration is displayed in the currently selected units, either wt% or g/Nm3.

4.1.2 Pressure Display

The pressure inside the measurement cell can be displayed on the readout by pressing and holding the ‘Pressure’ key on the front panel. The pressure is displayed in units of psia (pounds per square inch absolute.) The normal ambient pressure at sea level is about 14.7psia. Ambient pressure at higher elevations will be somewhat less.

The M460H can accurately measure ozone at cell pressures of 12 - 20psia. Care should be taken in setting up the monitor to avoid over-pressurizing the cell, as this will result in erroneous readings.

4.1.3 Zero Calibration

A Zero Calibration can be performed on the monitor at any time by simultaneously pressing the two ‘Zero’ buttons on the front panel. The monitor will briefly display dashes (‘----‘) after which the concentration should quickly go to zero.

The Zero Calibration is calculated based on the current measurement in the cell; so care must be taken to ensure that all ozone is purged from the cell before pressing the ‘Zero’ buttons.

If the Auto-Zero option is not used, API recommends performing a manual Zero Calibration on the monitor once a week.

4.1.4 Status LED’s

The four status LED’s to the right of the display indicate the general status of the Model 460H Monitor. During normal operation, after the monitor has warmed up, the green ‘Sensor OK’ LED should be on and all other Status LED’s should be off. For information on troubleshooting using the Status LED’s, see Chapter 7.

P/N 03662D Teledyne API Model 460H O3 Monitor Operator Manual - Page 19

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Contents 03662 Rev. D 1/8/04 MODEL 460H NEMA OZONE MONITORINSTRUCTION MANUAL EMAIL api-sales@teledyne.comSAFETY MESSAGES I. 0 INTRODUCTION TABLE OF CONTENTS2.0 INSTALLATION 6.0 MAINTENANCE6.3 DEGREE OF PROTECTION 6.2 CLEANING EXTERIOR SURFACES OF THE M460H7.0 SENSOR AND SYSTEM TROUBLESHOOTING APPENDIX A - SERIAL PORT CONFIGURATIONElectrical Connections FIGURESFigure 2-1 Mounting Hole Locations Pneumatic ConnectionsSerial Port Configuration TABLESTable 2-1 Digital Status Output Pins Table 2-3 Serial Port Pins1.1 Preface I.0 INTRODUCTIONTERMS AND CONDITIONS 1.2 WARRANTY POLICYADVANCED POLLUTION INSTRUMENTATION DIVISION 02024c1.3 Principle of Operation 1.4 Specifications 2.1 Mechanical Installation 2.0 InstallationFigure 2-1 Mounting Hole Locations Figure 2-2 Pneumatic Connections 2.2 Pneumatic Connections2.3AC Power Connection I/O CONNECTOR 2.4 Electrical I/O Connections2.4.1 Analog Output Figure 2-3 Electrical ConnectionsName Table 2-1 Digital Status Output Pins2.4.2 Digital Status Outputs LabelDescription 2.4.3 Control InputsTable 2-2 Control Inputs InputRS232 Table 2-3 Serial Port Pins2.4.4 RS232/RS485 Serial Communications Port Figure 2-5 Typical RS232 and RS485 Connections3.0 Startup 4.1.2 Pressure Display 4.0 Operation4.1 Front Panel Display 4.1.1 O3 readout4.2.2 Auto-Zero Function 4.2.1 Auto-Zero Installation4.2.3 Auto Zero Error 4.2 Auto-Zero Operationaddresscommanddata1,data2#checksumCR 5.1 Serial Port Configuration5.2 Command Syntax Table 5-1 Serial Port ConfigurationTable 5-2 Serial Port Command Summary 5.3 Command SummaryExamples of valid Commands with no data Examples of valid Commands with dataData Parameters Sent 5.4 Command Reference5.4.1 CAUTO Syntax5.4.2 CZERO 5.4.3 DACSTEP addressO3CR 5.4.4 O3addresso3conc#checksumCR addressSETADDRnewaddressCR 5.4.5 SETADDR5.4.6 TDUMP 5.4.7 TLIST addressvarvalue#checksumCR 5.4.8 VGETAllowable Range Index1VLISTCR 5.4.9 VLIST#5 iirfilt = 0.4 #6 concunits = newvalue 5.4.10 VSETvarindex is index number for internal VAR See VGET for index list6.1 Replacing the gas filter element 6.0 Maintenance6.2 Cleaning Exterior Surfaces of the M460H Filter Replacement ProcedureTable 7-1 Digital Status Outputs 7.0 Sensor and System Troubleshooting7.1 Status Output Summary 7.2 Sensor OK7.4 Lamp Low 7.3 Invalid Reading7.5 Cell Dirty Invalid 7.6 Status Output Summary TableTable 7-2 Status Output Truth Table SensorFigure A-1 RS232/RS485 Jumpers Controller PCA#03492 Appendix A - Serial Port ConfigurationRS232RS485 Appendix B - Pneumatic Diagram