Manuals / Teledyne / Household Appliance / Carbon Monoxide Alarm

Teledyne 300M Adjustments, Power Supply Board Adjustment, Box Temperature Limits

Models: 300M

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9 ADJUSTMENTS

Teledyne API Model 300M CO Analyzer Instruction Manual, 04033, Rev. A

9 ADJUSTMENTS

NOTE

The operations outlined in this chapter are to be performed by qualified maintenance personnel only.

All adjustments to the Model 300M are easy to make. Pots and test points are readily accessible without removing any components. Figure 1-2is a plan view of the Model 300M CO analyzer showing all the major components. Figure 9-1is an electrical block diagram of Model 300M CO Analyzer.

9.1 Power Supply Board Adjustment

The power supply board provides ±15 v, +12 v, and +5 v DC power to the analyzer. Also four temperature linearization circuits for the bench temperature, sample temperature, box temperature, and the gas wheel temperature are located on the power supply board.

Each circuit is a Whetstone bridge with the measuring thermistor being one leg. A feedback circuit performs the required linearization. Zero adjust pots have been factory set and no field adjustment should be required.

9.1.1 Box Temperature Limits

The box temperature is measured by a thermistor located on the motherboard. The box temperature is not controlled in the Model 300M. The temperature is measured and displayed as a TEST function on the front panel (see Section 5.1). The alarm limits can be set via an RS-232 port command.

9-1

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Teledyne 300M instruction manual Adjustments, Power Supply Board Adjustment, Box Temperature Limits

Contents

04033 T-API 6565 NANCY RIDGE DRIVE SAN DIEGO, CATOLL-FREE FAX TEL MODEL 300M CARBON MONOXIDE ANALYZERSAFETY MESSAGES The analyzer should only be used for the purposeand in the manner described in this manual VIII TABLE OF CONTENTSLIST OF FIGURES LIST OF TABLES6 HANDLING WARNINGS 3 PERFORMANCE TESTING4 SETUP MODE 5 DIAGNOSTICS10-1 9 ADJUSTMENTS10 TROUBLESHOOTING 8 CALIBRATION232 INTERFACE 11 ROUTINE MAINTENANCE12 SPARE PARTS LISTS 12-1LIST OF FIGURES viii LIST OF TABLES1.1 Preface 1.2 WarrantyWARRANTY POLICY 02024c 1 INTRODUCTIONTERMS AND CONDITIONS 1.3 Principle of Operation Figure 1-1 Pneumatic Diagram 1.4 Specifications suitable vent outside the analyzer area 1.5 Installation and OverviewLeak check all fittings with soap solution lift and carry the Model 300MPower plug must have ground lug Page Figure 1-2 Carbon Monoxide Analyzer 1-10 1.6.3 Status Outputs Optional 1.6.1 Electrical Connections1.6 Electrical and Pneumatic Connections 1.6.2 Remote Contact Closures Zero/Span Inputs1-12 1.6.4 RS-2321.6.5 Pneumatic System Table 1-1 Status Outputssample gas connections 1.6.6 Sample Gas Connection1.6.7 Zero/Span Valve Connections 1.6.8 Exhaust Connections1-14 Figure 1-4 Rear Panel Pneumatic Connections1-15 1.7 Operation VerificationOption Installed Table 1-2 Final Test and Calibration Values1-16 Factory Installed Options1-17 1.8 Options1.8.1 Rack Mount With Slides 1.8.2 Span Valve1-18 INTENTIONALLY BLANK2.1.1 CO Readout 2.1 Key Features2.1.3 E2ROM Backup Of Software Configuration 2 OPERATION2.1.6 RS-232Interface 2.1.7 Password ProtectionTable 2-1 Password Levels 2.1.5 Data Acquisition DAS2.2.1 Front Panel Display 2.2 Front PanelFigure 2-1 Model 300M Front Panel Table 2-2 System Modes ModeMeaning Table 2-3 Test Measurements Test MessageMeaning Table 2-4 Warning Messages 2.2.2 Programmable Push ButtonsFigure 2-2 Illustration of Normal Display 2.2.3 Status LED’sTable 2-5 Status LED’s StateMeaning INTENTIONALLY BLANK 2-10span gas into the analyzer 3 PERFORMANCE TESTING3.1 Manual Zero/Span Check 3.1.1 Zero Check3.1.2 Span Check 3.1.3 Dual Range Calibration 3.3 Zero/Span Valves Option 3.2 Span Valve Option3.4 Automatic Zero/Span Check compute the carbon monoxide reading see Section 4.3 and 4.4 for setting present timeThe programmed start time must be a minimum of 5 minutes later than the present timePage Table 3-1 Calibration Controls to be established least3-10 3.7 Remote Zero/Span Check or Adjustment RS-2323.8 Power-OnHold Off 3.9 Hold Off4.1 Setup Mode Operation 4 SETUP MODE4.3Setting the Time-of-Day 4.4 Setting the Date4.5 Adjusting the Clock Speed 4.6.3 Auto Range Mode AUTO 4.6 Setting the CO Concentration Range4.6.1 Single Range Mode SNGL 4.6.2 Dual Range Mode DUAL4.10 Disabling the Calibration Password 4.7 Setting the Analog Output Offset4.8 Setting the RS-232Baud Rate 4.9 Setting the Analyzer I.D4.11.1 Data Channels 4.11 Data Acquisition System DAS4.12 Software Configuration 4.13.1 Summary of Setup Functions 4.13 Gas AlarmsFunction Table 4-1 Setup FunctionsDefault Button SequenceFunction Table 4-1 Setup Functions ContinuedDefault Button SequenceINTENTIONALLY BLANK 4-105.1 Test Measurements 5 DIAGNOSTICSTable 5-1 Diagnostic Tests 5.2 Diagnostic Tests5.2.1 Signal I/O Table 5-2 I/O Signalstable continued Control Table 5-2 I/O Signals ContinuedSignal table continuedControl Table 5-2 I/O Signals ContinuedSignal table continued5.2.2 Analog Output Test 5.2.3 Electric TestTable 5-2 I/O Signals Continued Table 5-3 M300M Variables 5.3 M300M Internal VariablesINTENTIONALLY BLANK 6 HANDLING WARNINGS INTENTIONALLY BLANK 7 RS-232COMMUNICATIONS Table 7-1 RS-232Port Setup - Front PanelTable 7-2 RS-232Message Types 7.1 DAS ReportingPage 7.2 Warnings Table 7-3 RS-232Warning Message Clear Commands CommandWarning Message Cleared Table 7-4 Status Reports 7.3 Status/Controlwhen the analyzer is in the sample mode Table 7-5 Control Commandsthe analyzer is in sample mode 7.4 DiagnosticsTable 7-6 Diagnostic Commands Table 7-7 Diagnostic Reports7.5 Test Measurements Test Measurement Table 7-8 Test Measurement Request Commands7-10 Command7-11 7.6 Viewing and Modifying Variables7-12 Table 7-9 RS-232Variable Names8.1 Required Equipment and Gas Standards 8 CALIBRATIONFigure 8-2 Inlet Venting Recommendations Figure 8-1 Gas Generation SystemQv × L = Qa × D 8.2 Multi-PointCalibration8.2.1Procedure Page Page 8.3 Zero/Span Checking INTENTIONALLY BLANK 9 ADJUSTMENTS 9.1 Power Supply Board Adjustment9.1.1 Box Temperature Limits Figure 9-1:M300M Electrical Block Diagram the value on the voltmeter will remain constant 9.2 A/D - D/A Calibration ProcedurePage 9.3 Dark Current Signal Adjust Procedure To adjust analog recorder offset, see Section9.4 Output Voltage Range Changes 9.5 Flow Readout Adjustment 9.7 CPU 9.6 DC Power SupplyINTENTIONALLY BLANK 10 TROUBLESHOOTING 10.1 Overview10-1 10-2 10.2.1 Checking the Power Sub-Systems10-3 10.3 Troubleshooting Using Warning Messages10.2.2 Checking the CPU and Display 10.2.3Checking the KeyboardMeaning Table 10-1 Warning Messages10-4 Warning Message10-5 10.4 Troubleshooting Using Test Function ValuesMeaning Table 10-2 Test Function Values10-6 Test Function10.5.3Slow Response to Changes in Concentration 10.5 Troubleshooting Dynamic Problems10.5.1Noisy or Unstable Readings at Zero 10.5.2Noisy, Unstable, or Non-LinearSpan Readings10-8 10.6.1 Troubleshooting Flow Problems10.5.5Cannot Zero or Cannot Dynamic Zero 10.5.6Cannot Span or Cannot Dynamic SpanHigh Flow Hazardous voltages present - use cautionFlow is zero Low FlowGas Filter Wheel Temperature 10.6.2 Troubleshooting Temperature ProblemsSample Temperature Optical Bench Temperature10.6.3 Checking the V/F Card 10-11Hazardous voltages present - use caution 10-12 Table 10-3 V/F Board Jumpers - Factory Settings10.6.3.1 Analog Inputs 10.6.3.2 Digital to Analog Converters10-13 10.6.4 Checking the DC Power Supply Board 10.6.3.3 Digital I/O Lines10-14 10-15 10.6.5 Checking the Synchronous Demodulator Board10-16 10.6.6 Checking the Opto InterrupterFigure 10-1 Opto Pickup Waveform Figure 10-2 Detector Waveform10-17 10.6.7 Flow/Pressure Sensor10-18 10.7 Warranty/Repair Questionnaire11-1 11 ROUTINE MAINTENANCE11.1 Model 300M Maintenance Schedule Table 11-1 Maintenance ScheduleDo not exceed 15 PSI of pressure 11.2Replacement of Sample Filter11.3.1 Using a Leak Checker 11.3Leak CheckingUse only bubbles, not liquid the solution may enter and contaminate the cell11.3.2 Leak Self Test vacuum. This may cause damage to the analyzerINTENTIONALLY BLANK 11-412 SPARE PARTS LISTS 12.1 Spare parts for CE Mark units12-1 12-2 12.2 Model 300M Expendables kit12.3 Model 300M Spare parts kit for one unit Includes12.4 Model 300M Level 1 parts kit for ten units 12-3Includes 12-4 ConnectorsSignal Cables & Adapters come in 4 general types12-5 WiringTroubleshooting the modem connection ENABLE MODEM TRANSMISSION12-6 12-7 APPENDIX B Electrical drawing indexDrawing Number Title