Teledyne 450H Adjustments, Calibration, 5.2Changing the analog output range, 5.2.1Voltage output

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5.0 ADJUSTMENTS

5.0 ADJUSTMENTS

CAUTION

RISK OF ELECTRICAL SHOCK. THE OPERATIONS

OUTLINED IN THE FOLLOWING SECTIONS OF THIS

CHAPTER ARE TO BE PERFORMED BY QUALIFIED

MAINTENANCE PERSONNEL ONLY!

5.1 Calibration

The Model 450H is calibrated using a wet chemistry method (double buffered KI) prior to shipment. The M450H should operate for extended periods without calibration.

5.2Changing the analog output range

5.2.1Voltage output

Output voltage ranges are set by DIP switches on the V/F board. To change the range for the analog output:

1.Turn off instrument power. Remove instrument cover. Locate the V/F board near the front of the analyzer using Figure 1.6.

2.Locate switch S1, along the top edge of the card. Select the desired range per Table 4.2 below.

3.Recalibrate the ADC as described in Section 5.3.

Full Scale Output	Switch Settings
100 mV	1,6 = ON
1 V	1,5 = ON
5 V	1,4 = ON
10 V	1,3 = ON

TABLE 4.2 V/F BOARD DIP SWITCH - RANGES FOR ANALOG OUTPUT

5.2.2 Current Output (Optional)

To configure the M450H for 4-20mA current output, perform the following steps:

1.Set the analog voltage range to the 5 Volt scale as described in Section 5.3.1 above.

2.Install Jumper in J2 on the rear panel PCB assembly.

3.Set Jumpers JP3 and JP4 on the rear panel PCB assembly as shown in Figure 4.2 below.

P/N 02826B1 Teledyne API Model 450H O3 Monitor Instruction Manual - Page 41

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Contents Printed 05/15/06 MODEL 450H OZONE MONITOREMAIL api-sales@teledyne.com SAFETY MESSAGES 3.0 SETUP MODE TABLE OF CONTENTS4.0 MAINTENANCE 5.0 ADJUSTMENTS5.4 CURRENT LOOP CALIBRATION APPENDIX A - ELECTRICAL SCHEMATIC INDEX5.3 A/D - D/A CALIBRATION PROCEDURE… FIGURES TABLE 1.1 DIGITAL OUTPUTS TABLESTABLE 1.2 CONTROL INPUTS TABLE 1.3 FINAL TEST AND CALIBRATION VALUES1.1Preface 1.0INTRODUCTIONADVANCED POLLUTION INSTRUMENTATION DIVISION 1.2 WARRANTY POLICY02024c COVERAGE1.3 Principle of Operation Page 1.5 Installation 19” Rack Mount Enclosure 1.4 SpecificationsPage 5.If the M450H has been configured with the auto-zerovalve option, connect the oxygen or other zero gas source to the ¼” tube fitting labeled ‘Zero Gas Inlet.’ Do not exceed 30 psig in the zero air delivery line 1.6 Installation NEMA 4X Wall Mount Enclosure ozone FIGURE 1.1 - NEMA 4X MOUNTING HOLE DIMENSIONS FIGURE 1.2 - NEMA 4X ELECTRICAL POWER CONNECTIONS FIGURE 1.3 - NEMA 4X PNEUMATIC CONNECTIONS 1.6Electrical I/O Connections FIGURE 1.4 - ELECTRICAL SIGNAL I/O CONNECTIONS1.6.1Analog Output 1.6.2 Relay Outputs1.6.4 Control Inputs FIGURE 1.5 - CONNECTING DIGITAL OUTPUTSOutput DescriptionInput 1.6.5 RS232 OutputCONTROL INPUTS Zero CalibrateFIGURE 1.7 - M450H PNEUMATIC BLOCK DIAGRAM FIGURE 1.6 - NEMA4X ASSEMBLY LAYOUTU V L A M P M O T H E R B V / F C P U A C L I N E D C P O W E R SOPOWER SUPPLY MODULE Figure 1.8 - 19” Rack Assembly Layout1.7 Operation verification TABLE 1.3 FINAL TEST AND CALIBRATION VALUES 1.8 Options 1.8.5 Flow Switch1.8.1 Auto-ZeroOption 1.8.2 Isolated Current Output 4-20mAor 2-20mA2.1.2 Concentration Alarms 2.1Key features2.1.4 E2 ROM backup of software configuration 2.0OPERATION2.2.1 Front panel display fields 2.2 Front Panel DisplayFIGURE 2.1 - MODEL 450H FRONT PANEL Mode FieldTest Message Message/Test Measurement FieldTEST MEASUREMENTS Warning Message2.2.2 Status LED’s 2.3 Software Operation2.3.1 Main Menu StateFIGURE 2.3 - ALARM STATUS MENU 2.3.3 Alarm Status MenuClearing Alarms Audible BeeperPage FIGURE 3.1 - SETUP MENU 3.0 SETUP MODE3.2 Setting the Concentration Units UNIT 3.1 Setting the Concentration Alarms ALRM3.3 Setting the time-of-dayand date CLK HI ALARM OFF3.4 Setting the RS-232baud rate COMM 0 LATCH_ALARMS 3.5 Setup variables VARS1 ALARM BEEPER 3 AZERO ENABLE10 TPC ENABLE 8 GAS MOLECULAR WEIGHT7 AZERO HOLD OFF 9 CONCENTRATION RANGE3.5.1Zero Calibration 3.5Diagnostics DIAG3.5.2 D/A Calibration 3.5.3 Analog Output4.2Cleaning Exterior Surfaces of the M450H 4.0Maintenance4.3 Cleaning the Optical Cell Filter Replacement Procedure4.4 Degree of Protection FIGURE 4.1 MEASUREMENT CELL DISASSEMBLYSwitch Settings 5.0 ADJUSTMENTS5.1 Calibration 5.2Changing the analog output rangeFIGURE 4.2- ANALOG OUTPUT JUMPERS 5.3 A/D - D/A Calibration Procedure1.Press SETUP-DIAG 5.4 Current Loop Calibration zero point can be adjusted anywhere between 0 and 4 milliamps. Press ENTR when you have reached the desired zero point as measured by your test meter APPENDIX A - SOFTWARE MENU TREE Page DESCRIPTION APPENDIX B - SPARE PARTS LISTPage Title APPENDIX C - ELECTRICAL SCHEMATIC INDEXDrawing Number