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Teledyne 4060 manual The stability of the electrometer circuit can be tested as follows

Models: 4060

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Maintenance	Series 4060

The circuit consists of an electrometer amplifier and an operational amplifier. It is a very high-gain, current-to-voltage converter circuit, having an input impedance measuring in the billions of ohms. It is static sensitive and highly susceptible to contamination, and special handling precautions must be taken.

Because of its high impedance, the input circuitry to the electrometer has had careful design consideration. The resistors (R2 and R3) in the input gain circuit (see schematic) are installed on Teflon-insulated standoffs, instead of directly to the printed circuit, to eliminate the possibility of leakage currents.

To eliminate any possibility of contamination of the insulating materials employed, the completed PC board is ultrasonically cleaned in laboratory grade alcohol. Under no circumstances should the parts described be handled with bare fingers. A freshly-scrubbed finger, stroked along one of the glass resistors, would deposit enough skin oil to completely upset the range division of the attenuator circuit.

Resistor R3 is a 1000 MΩ resistor used in the feedback circuit of the amplifier. R2 has a resistance of 10,000 MΩ and is used in series with the zero potentiometer slider. This circuit is used to nullify any offset signal introduced by the signal electrode. Trimmer P1 is used to nullify the offset signal generated by the electrometer amplifier.

The output of the circuit is standardized against gases with known hydrocarbon concentrations by zero and span calibration, so that the meter and/or recorder indicate the hydrocarbon concentration of the gas being used.

The positive and negative operating voltage required by the electrometer amplifier is furnished by a switching power supply circuit, mounting at the back panel of the Analyzer

The stability of the electrometer circuit can be tested as follows:

1.Disconnect the collector cable.

2.Place the analyzer in the auto range.

3.Adjust zero offset value so that the recorder reads at some point upscale, and record a 24 hour chart.

74	Teledyne Analytical Instruments

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Teledyne 4060 manual The stability of the electrometer circuit can be tested as follows

Contents

SERIES DANGERINSTRUCTION, OPERATING AND MAINTENANCE MANUAL FOR P/N M76417 DATE 06/29/10Teledyne Analytical Instruments WarrantySeries Copyright 2010 Teledyne Analytical InstrumentsSafety Messages No SymbolThis manual provides information designed to guide you through the installation, calibration and operation of your new analyzer. Please read this manual and keep it available DANGER Additional Safety InformationCOMBUSTIBLE GAS USAGE Always purge the entire system before performing any maintenance and always leak check the system after removing any tubing or fittings on the sample system. See the procedures for purging and leak checking this instrument on the following pages Procedure for Removal of Internal Inaccessible Shock Hazards READ THIS MANUAL BEFORE OPERATING THE INSTRUMENT AND ADHERE TO ALL WARNINGS INCLUDED IN THIS MANUALTable of Contents 3.3 User Connections 4.5 Sample Pump 5.1.4 Collector Cable Figure 2-2 Typical Piping Diagram for the Model List of FiguresFigure 2-1 Internal Temperature Controllers Figure 3-2 Equipment Interface Connector Pin ArrangementTable 3-7 Pin out of 50 pin D-Sub Connector List of TablesTable 3-4 Alarm Relay Contact Pins Table 3-8 Commands via RS-232 Input1.1 Main Features of the Analyzer Introduction1.2 Principle of Operation 1.3 Analyzer DescriptionSeries Figure 1-1 Model 4060 Front Panel InterfaceFigure 1-2 Model 4060 Rear Panel Introduction Detecting atmospheric pollutants 1.4 Applications Gas purity certification  Detecting trace benzene in ambient air 2.2 Modes of Operation Operational Theory2.1 Introduction 2.3 Analyzer Subsystems 2.3.1 Sample SystemFigure 2-1 Internal Temperature Controllers 2.3.2 Gas Flow Control System2.3.3 Fuel and Blanket Air Systems 2.3.4 Flame Ionization Detection CellOperational Theory Figure 2-2 Typical Piping Diagram for the ModelSeries Teledyne Analytical Instruments2.4 Detection Cell Figure 2-3 Flame Ionization Cell 2.4.1 Electrometer-Amplifier2.4.4 Flame Ignition Circuit 2.4.2 Anode Power Supply2.4.3 Flame Guard Circuit 3.2 Mounting the Analyzer Installation3.1 Unpacking the Analyzer 3.3.2 Electronic Connections 3.3 User Connections3.3.1 Electrical Power Connections Figure 3-1 Model 4060 Rear Panel with Optional Gas Manifold 3.3.2.1 PRIMARY INPUT POWERFigure 3-2 Equipment Interface Connector Pin Arrangement 0-1 VDC % of RangePin Function Table 3-1 Analog Output ConnectionsTable 3-2 Analog Concentration Output-Example ExamplesTable 3-3 Analog Range ID Output-Example Threshold AlarmTable 3-4 Alarm Relay Contact Pins Table 3-5 Remote Calibration Connections For exampleTable 3-6 Range ID Relay Connections 2. When the CRC closes, remove the span commandTable 3-7 Pin out of 50 pin D-Sub Connector 3.3.2.10 RS-232 PORT3.3.3 Gas Connections Table 3-8 Commands via RS-232 InputTable 3-9 Required RS-232 Options Figure 3-3 Gas Connections ANY CIRCUMSTANCES USE WATER PUMPED AIR WITH THC LESS THAN0.1 PPM. DO NOT USE OIL PUMPED AIR UNDER FUEL3.4 Placing the System in Operation Operation 4.1 Equipment4.2 Preliminary Power-Off Check List 4.3 Activating the Support Gases4.3.2 Carrier Gas 4.4 Flame Ignition4.3.1 Air 4.3.3 Span Gas4.4.1 Verification of the Flame Guard Circuit 4.5 Sample Pump4.6 Analyzer Operation 4.4.2 Ignition and/or Flame Guard Circuit FailureCaution ALARM SUPPRESSION Alarms Refer to the Addendum and Testing4.6.1 Default Parameters Password4.6.3 Navigation and Data Entry Example Analysis Mode or SetupMode 4.6.3.2 ENTER4.6.3.3 ESCAPE 4.6.4 Menu Structure3. MODIFIABLE ITEM screens have a flashing value somewhere in the line 4.6.5 Span 4.6.6 ALT-SPAN Note The self diagnostics will interrupt analysis temporarily4.6.8 System Self-Diagnostic Test 4.6.7 The Model Screen4.6.9 The Alarms Function AL-2 50.00 ppb AL-1 DEFEATED AL-1 HIGH AL-1 NON-FAILSAFE AL-1 NON-LATCHINGAL-1 20.00 ppb AL-2 ACTIVE AL-2 LOW AL-2 FAILSAFE AL-2 LATCHING RELEASING A LATCHED ALARM When alarm conditions are present, the main analysis screen will have one or both of the following messages AL-1, AL-2 followed by the instruction ENT/ACK . Pressing ENTER will release a latched alarm. That is, if there will not be an alarm condition until the analysis concentration is again violating the trip point. Furthermore, the alarms will be suppressed until the analysis value is updated, so even though the screen may be reporting a value that should cause an alarm, until the analyzer again enters SAMPLE MODE, no alarm condition will reoccur Range Select Man Man Rng R1 R1 0-100.00ppb R2 0- 1.00ppm 4.6.11 Analog Output Adjustment4.6.10 The Range Function R3 0- 10.00ppm4.6.12 Linearization Note Before setting up an AUTOCAL, be sure you understand4.6.14 Setting up an AUTO-CAL 4.6.13 Changing StreamAUTOCAL PASSWORD AS3d 20h AUTO SPAN Enabled Span in 11 days Span in 6 hours4.6.15 Timing 4.6.16 Group Setup4.6.17 Password Protection ENTERING A PASSWORD PASSWORDENTER NEW PASSWORD SCREEN ENTER PASSWORD SCREENCHANGE PASSWORD SCREEN REPEAT PASSWORD ENTRY SCREEN 4.6.18 Logging OutRestrict Access? ENTER=Yes ESCAPE=NO 4.6.19 StandbyEnter Pressing Enter places the instrument in STANDBY Teledyne Analytical Instruments OperationSeries Maintenance & Troubleshooting Work with one hand only5.1 Measuring Circuit Electrical Checks 5.1.1 Anode Voltage Check5.1.3 Printed Circuit Board Replacement 5.1.2 Electronic Stability5.2 Temperature Control Electronic Check 5.1.4 Collector Cable5.3 Ignition and/or Flame Guard Circuit Checks 5.4 Sampling System 5.5 Printed Circuit Board Descriptions 5.5.1 Flame Guard and Anode Power Supply PCB5.5.2 Proportional Temperature Controller PCB 5.5.3 Electrometer-Amplifier PCB The stability of the electrometer circuit can be tested as follows A.1 Specifications and Initial Settings AppendixA.2 Recommended Spare Parts List Analytical InstrumentsA.3 Drawing List PC Board AssembliesTeledyne Analytical Instruments AppendixSeries B1 Addendum and Testing Results Appendix B