Typical Sample Gas Flow Problems | Teledyne gfc 7000ta manual

Troubleshooting

Model GFC7000TA Carbon Dioxide Analyzer

Figure 10-9: GFC 7000TA – Internal Pneumatics with O2 Sensor Option 65A

10.2.2. Typical Sample Gas Flow Problems

10.2.2.1. Flow is Zero

The unit displays a SAMPLE FLOW warning message on the front panel display or the SAMPLE FLOW test function reports a zero or very low flow rate.

Confirm that the sample pump is operating (turning). If not, use an AC voltmeter to make sure that power is being supplied to the pump. If no power is present at the electrical leads of the pump.

1.If AC power is being supplied to the pump, but it is not turning, replace the pump.

2.If the pump is operating but the unit reports no gas flow, perform a flow check as described in Section 9.3.4.

3.If no independent flow meter is available:

∙Disconnect the gas lines from both the sample inlet and the exhaust outlet on the rear panel of the instrument.

∙Make sure that the unit is in basic SAMPLE Mode.

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Teledyne gfc 7000ta operation manual Typical Sample Gas Flow Problems, Flow is Zero

gfc 7000ta specifications

The Teledyne GFC 7000TA is a cutting-edge, high-performance gas flow calibrator designed for both laboratory and field applications. This instrument is renowned for its accuracy, versatility, and reliability, making it an ideal choice for various industries, including aerospace, environmental monitoring, and manufacturing.

One of the standout features of the GFC 7000TA is its advanced measurement technology. It utilizes state-of-the-art thermal mass flow meters, which allow for precise fluid measurement across a wide range of flow rates. This technology ensures highly accurate readings, which are essential for applications requiring stringent compliance with regulatory standards.

The GFC 7000TA is capable of accommodating various types of gases, making it particularly versatile. Users can calibrate flow for gases such as air, nitrogen, or carbon dioxide, providing flexibility in a multitude of applications. The device also supports dual-channel capabilities, allowing simultaneous measurement and calibration of two different gas types, enhancing productivity and efficiency in processes.

Another notable characteristic of the GFC 7000TA is its user-friendly interface. Equipped with a high-resolution touchscreen display, the device offers intuitive navigation and data visualization. Users can easily set parameters, view real-time measurements, and generate printed reports. This interface reduces the learning curve for new operators, allowing organizations to implement the GFC 7000TA with minimal training.

In addition to its advanced measuring capabilities, the GFC 7000TA features a robust design for durability in harsh environments. The instrument is compliant with various international standards, ensuring its reliability and performance in various conditions. Its portable form factor makes it convenient for fieldwork, while the rugged construction provides peace of mind for users working in demanding settings.

The GFC 7000TA also incorporates modern connectivity options. With built-in USB and Ethernet ports, users can easily integrate the device into their existing systems for data logging and remote monitoring. This connectivity feature enables real-time data access and enhances the potential for analysis and optimization of gas flow systems.

In summary, the Teledyne GFC 7000TA is a high-performance gas flow calibrator characterized by its advanced thermal mass flow measurement technology, versatility in accommodating various gases, user-friendly interface, and robust design. With its modern connectivity features, this instrument stands out as a vital tool for professionals seeking precision and reliability in gas flow applications.

Contents

Model GFC 7000TA Carbon Dioxide Analyzer Model GFC7000TA Carbon Dioxide Analyzer Copyright 2013 Teledyne Analytical Instruments This page intentionally left blank Page Safety Messages Safety Messages Model GFC7000TA Carbon Dioxide Analyzer Consignes DE Sécurité Mise EN Garde Teledyne Analytical Instruments Vii Page 07272 05233 06879 Manual Information Model GFC7000TA Carbon Dioxide AnalyzerRev Name/Description This page intentionally left blank Table of Contents Setup Mode Calibration Procedures Troubleshooting & Repair Procedures Maintenance Schedule & ProceduresTheory of Operation Appendix D Electronic Schematics Primer on ELECTRO-STATIC Discharge 114 103104 115 198 194195 199 123 118120 124 Teledyne Analytical Instruments Xviii Table of Contents FeaturesUsing This Manual Specifications Instrument Maintenance FAQCalibration Procedures Troubleshooting Introduction Model GFC7000TA Carbon Dioxide Analyzer Page Model GFC 7000TA Basic Unit Specifications SpecificationsSpecifications Model GFC7000TA Carbon Dioxide Analyzer GFC 7000TA Parameter GFC 7000TA Specification Specifications Model GFC7000TA Carbon Dioxide Analyzer CE Mark Compliance GFC 7000TM Parameter GFC 7000TM SpecificationSafety Compliance Emissions CompliancePage Unpacking and Initial Set Up Getting Started Model GFC7000TA Carbon Dioxide Analyzer Sides of the instrument Area Minimum Required Clearance Front Panel Front Panel Layout Getting Started Model GFC7000TA Carbon Dioxide Analyzer Display and Touchscreen Control Description Description/Function Field Display/Touch Control Screen Mapped to Menu Charts Rear Panel Provides a description of each component on the rear panel Purge Sample Exhaust Vent Span Pressure Span IZS RX TX COM Component Cooling fan AC power connector Model/specs labelDCE DTE Status Analog OUT Control Alarm Ethernet USB RS-232 Internal Layout Internal Chassis Layout Optical Bench Layout Electrical Connections GFC 7000TA Internal Gas Flow Power Connection Connecting Analog Inputs Option PIN Description DAS Parameter Connecting Analog OutputsAnalog Input Pin Assignments Analog input # Madc Signal PIN Analog Output VDC SignalGFC 7000TA Analog Output Pin Outs 3 4 5 6 7 8 D Connecting the Status OutputsStatus Output Pin-outs Control Input Pin-outs Connecting the Control InputsInput # Status On Condition Definition Connecting to a Personal Computer PC Connecting the Communications InterfacesConnecting to a LAN or the Internet Connecting to a Multidrop Network Basic Pneumatic Connections Rear Panel Pneumatic Connections Getting Started Model GFC7000TA Carbon Dioxide Analyzer Getting Started Model GFC7000TA Carbon Dioxide Analyzer Getting Started Model GFC7000TA Carbon Dioxide Analyzer Connections with Internal Valve Options Installed Vent Setting the Internal Purge Air Pressure 15 Example of Pneumatic Set up for Multipoint Calibration Initial Operation Startup Front Panel Display During System Warm-Up Warm UpName Color Behavior Significance IR source may be faulty Possible Warning Messages at Start-Up Setup Functional Check Initial Calibration Procedure Set the Analog Output Range Set the expected CO2 span gas concentration Conc Perform the Zero/Span Calibration Procedure STABIL=XXX.X PPM 1.2. O2 Calibration Method Initial O2 Sensor Calibration Procedure1.1. O2 Calibration Setup Pneumatic connections for calibrating are as follows Activate O2 Sensor Stability Function Previous display To Sample O2 Zero/Span Calibration perform by pressing Model GFC 7000TA Analyzer is now ready for operation Thank YOU Frequently Asked Questions FAQ’s Glossary Term Description/Definition Hydrogen sulfide Nitric oxide Diagnostics, the diagnostic settings of the analyzerNitric acid Nitrogen dioxide Gas Filter Correlation Poly Vinyl Chloride, a polymer used for downstream tubing Variables, the variable settings of the instrument Protocol for Ethernet devices Tthis page intentionally left blank Current Loop Analog Outputs Option Rack Mount Kits Options 20A, 20B, 21Option Number Description Current Loop Option Installed on the Motherboard Option Number Description OPT 42C Expendable Kits Options 42C, 42DOPT 42D Ambient Zero/Pressurized Span Valve Calibration Valves OptionsAmbient Zero/Pressurized Span Valve Operating States Ambient Zero/Ambient Span Valve Ambient Zero/Ambient Span Valve Operating States Internal Pneumatic Flow Ambient Zero/Ambient Span Communications Cables FAQModel GFC7000TA Carbon Dioxide AnalyzerCommunication Options RS-232 Multidrop Option Theory of Operation Oxygen Sensor OPTParamagnetic measurement of O2 Operation within the GFC 7000TA Analyzer Pneumatic Operation of the O2 Sensor GFC 7000TA Internal Pneumatics with O2 Sensor Option Second Language Switch Special FeaturesMaintenance Mode Switch Dilution Ratio Option This page intentionally left blank Overview of Operating modes Front Panel Display Analyzer Operating modes Sample ModeMeaning Test Functions Defined Test FunctionsParameter Display Units Meaning Definitions Refer toFor These test List of Warning Messages Calibration Mode To view and clear warning messages Primary Setup Mode Features and Functions Secondary Setup Mode Features and Functions Setup  CFG Viewing the Analyzer’s Configuration Information Setup  Acal Automatic Calibration LED State Setup  DAS Using the Data Acquisition System DASFront Panel Sample LED Status Indicators for DAS OFF DAS Channels DAS StructureDAS Data Channel Properties DAS Data Parameter Functions Default DAS Channels Default DAS Channels Setup DAS Configuration Limits Touchscreen Button Functions Conc ATIMER, 4 Translates to the following configuration Channel No Trigger Events A-Z, space ’ ~ ! # $ % & * = + \ , . / ? From the Data Acquisition menu To configure a specific data parameter, press From the Edit Data Parameter Menu see previous section Report Periods in Progress When Instrument is Powered OFF From the Data Acquisition menu Press SET key until… Compact Report Starting Date From the Data Acquisition menu Press SET key until… Remote DAS Configuration Apicom User Interface for DAS Configuration Setup  Rnge Analog Output Reporting Range Configuration Analog Output Connector Pin Out Physical Range versus Analog Output Reporting Ranges Reporting Range Modes To select the Analog Output Range Type press Sngl Dual Auto Single Range Mode Sngl Dual Range Mode Dual Range Control Menu Auto Range Mode Auto To change the concentration units Range UnitsExit returns To the main menu Primary Setup Menu Dilution Ratio Password Levels Setup  Pass Password FeaturePassword Level Menu Access Allowed Enter Setup Pass Setup  CLK Setting the Internal Time-of-Day Clock Teledyne Analytical Instruments 100 Setup  MORE Comm Using the Analyzer’s Communication Ports Analyzer ID COM Port Default Settings Teledyne Analytical Instruments 103 Teledyne Analytical Instruments 104 RS-485 Configuration of COM2 DTE and DCE Communication 10 Com Port Communication Modes COM Port Communication ModesMODE1 Description Teledyne Analytical Instruments 107 Configuring the Ethernet Interface using Dhcp Remote Access via the Ethernet11 Ethernet Status Indicators IP Address Property Default State Description DhcpInstrument Gateway IP To view the above properties, press Teledyne Analytical Instruments 111 Teledyne Analytical Instruments 112 13 Internet Configuration Touchscreen Functions Button Function Multidrop RS-232 Set Up Multidrop/LVDS PCA Seated on CPU Teledyne Analytical Instruments 115 COM Port Baud Rate To select the baud rate of one of the COM Ports, press COM Port Testing Setup  More  Vars Internal Variables Vars Teledyne Analytical Instruments 119 15 GFC 7000TA Diagnostic Diag Functions Setup  More  Diag Using the Diagnostics FunctionsDiagnostic Function and Meaning Signal I/O Accessing the Diagnostic FeaturesTo access the Diag functions press the following buttons To enter the signal I/O test mode, press Analog Output Step Test 16 Diag Analog I/O Functions Analog I/O ConfigurationTo begin the Analog Output Step Test press Sub Menu Function 17 Analog Output Voltage Ranges Range Minimum Output Maximum Output 18 Analog Output Current Loop Range PIN Analog Voltage Current Output Signal19 Analog Output Pin Assignments Analog Output Calibration Mode 10V Curr Entr Exit Teledyne Analytical Instruments 127 Teledyne Analytical Instruments 128 20 Voltage Tolerances for Analog Output Calibration Manual Analog Output Calibration and Voltage AdjustmentVDC Teledyne Analytical Instruments 130 Current Loop Output Adjustment Edit Teledyne Analytical Instruments 132 21 Current Loop Output Calibration with Resistor SET Configuring Analog Inputs Option Channels Teledyne Analytical Instruments 135 Electric Test Repeat Pressing Next unti Dark Calibration Test Repeat Pressing Next until Pressure Calibration Repeat Pressing Next until Signal I / O Next Flow Calibration 22 Test Parameters Available for Analog Output A4 Test Channel OutputTest Channel Zero Full Scale 23 CO2 Concentration Alarm Default Settings Setup MORE  Alrm Using the Gas Concentration AlarmsAlarm Status Limit SET Point ALM1 Remote Operation of the Analyzer Setting the Concentration Alarm LimitsRemote Operation Using the External Digital I/O Status Outputs Status 24 Status Output Pin Assignments DC PowerPin assignments for the Status Outputs are Emitter BUS CAL Input Status Condition When Enabled External Zero25 Control Input Pin Assignments External Span 26 Terminal Mode Software Commands Remote Operation Using the External Serial I/OHelp Commands in Terminal Mode Terminal Operating Modes Data Types 27 Command TypesCommand Command Type Achieved by pressing the Enter button on a computer Status Reporting Measurements, DAS reports, variable values, etc Teledyne Analytical Instruments 149 Teledyne Analytical Instruments 150 COM Port Password Security To initialize the modem press Apicom Remote Control Program Where N is any numeral between 0 General Overview of Hessen Protocol Using the GFC 7000TA with a Hessen Protocol NetworkAdditional Communications Documentation 28 Serial Interface Documents 29 RS-232 Communication Parameters for Hessen Protocol Selecting a Hessen Protocol Type To select a Hessen Protocol Type press 30 Teledyne Instruments Hessen Protocol Response Modes Setting The Hessen Protocol Response ModeMode ID Mode Description CMD BCC Hessen Protocol Gas ID To Select a Hessen response mode, press 31 Default Hessen Status Bit Assignments Status Flag Name Default BIT Assignment To assign or reset the status flag bit assignments, press Instrument ID CodePage Before Calibration Zero Air and Span Gas Calibration Gas Traceability Manual Calibration without Zero/Span ValvesData Recording Devices Step TWO Set the expected CO2 Span Gas concentration Step Three Perform the Zero/Span Calibration Procedure Span Manual Calibration Checks TST TST CAL Manual Calibration with Zero/Span Valves Pneumatic Connections Ambient Zero/Pressurized Span Valves Sample GAS Pneumatic Connections Ambient Zero/Ambient Span Valves Sample GAS Teledyne Analytical Instruments 169 Teledyne Analytical Instruments 170 Manual Calibration Checks with Zero/Span Valves Analyzer Enters Zero CAL Mode Zero/Span Calibration on Auto Range or Dual Ranges Use of Zero/Span Valves with Remote Contact Closure AutoCal Attribute Setup ParametersAutomatic Zero/Span Cal/Check AutoCal Autocal Modes Mode and Attribute Value Comment To program the Sequence Next Calibration Data Quality Evaluation Calibration QualityAutoCal with Auto or Dual Reporting Ranges Modes Selected Function Minimum Value Optimum Value Maximum Value Slope Teledyne Analytical Instruments 177 Page Maintenance Schedule & Procedures Maintenance SchedulePage Action Maintenance Model GFC7000TA Carbon Dioxide AnalyzerGFC 7000TA Maintenance Schedule Freq MR Ratio StabilityCO2 Meas Pres Predicting Failures Using the Test Functions Predictive uses for Test Functions Maintenance Procedures Replacing the Sample Particulate Filter Vacuum Leak Check and Pump Check Rebuilding the Sample PumpPerforming Leak Checks Pressure Leak Check Cleaning Exterior Surfaces of the GFC 7000TA Cleaning the Optical BenchPerforming a Sample Flow Check Measurement Fundamentals Measurement MethodBeer’s Law Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Gas Filter Correlation GFC Wheel Measure Reference Ratio Measurement Fundamentals with GFC Wheel Interference and Signal to Noise Rejection Is reduced Is Shifted Effects of Interfering Gas on CO2 Meas & CO2 REF Teledyne Analytical Instruments 192 Pneumatic Operation Flow Rate Control Sample Gas FlowCritical Flow Orifice Teledyne Analytical Instruments 195 Pneumatic Sensors Purge Gas Pressure ControlParticulate Filter Sample Pressure Sensor Electronic Operation Overview Sync CPU CardSensor Demod Disk-On-Module DOM CPUFlash Chip Optical Bench & GFC Wheel Temperature ControlIR Source 11 GFC Light Mask Sensor Segment Sensor IR Photo-Detector Synchronous Demodulator Sync/Demod AssemblyOverview Signal Synchronization and Demodulation 13 GFC 7000TA Sync / Demod Block Diagram Four sample and hold circuits are LED Function Status OK Fault StatusSync/Demod Status LED’s Sync/Demod Status LED Activity Relay Board Dark Calibration SwitchElectric Test Switch Heater Control Status LEDs LED Color Function Status When LIT Status When UnlitRelay Board Status LED’s 5.6. I2C Watch Dog Circuitry Mother BoardTo D Conversion Sensor Inputs Thermistor Interface Analog Outputs Internal Digital I/O Status Outputs Power up Circuit7. I2C Data Bus Control Inputs Power Supply/ Circuit Breaker 16 Power Distribution Block Diagram Lvds Transmitter Board Front Panel Touchscreen/Display InterfaceFront Panel Touchscreen/Display Interface PCA Windows CE Software OperationAdaptive Filter API Firmware Calibration Slope and Offset Measurement Algorithm Temperature and Pressure Compensation Internal Data Acquisition System DAS Teledyne Analytical Instruments 216 General Troubleshooting Hints Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Interpreting Warning Messages To view or clear the various warning messages press Viewing and Clearing Warning Messages Conc ALRM1 Conc ALRM2 System Reset Fault Diagnosis with Test FunctionsFault Condition Possible Causes Message Sample Temp Source Test Functions Indicated Failures Indicated Failures Using the Diagnostic Signal I/O Function Test Functions Slope Offset CPU Status Indicator Internal Electronic Status LEDs Sync Demodulator Status LED’s LED Function Fault Status Indicated FailuresSync/Demod Board Status Failure Indications I2C Status LED Failure Indications LED Function Fault Status Indicated FailuresRelay Board Status LEDs DC Voltage Test Relay Board Status LED Failure Indications Gas Flow Problems GFC 7000TA Internal Gas Flow Diagrams Sample Chamber Teledyne Analytical Instruments 230 Teledyne Analytical Instruments 231 Typical Sample Gas Flow Problems Flow is Zero High Flow Low FlowDisplayed Flow = Actual Flow Does Not Match Displayed Flow Poor or Stopped Flow of Purge GasSample Pump Calibration Problems Miscalibrated Non-Repeatable Zero and Span Inability to Span Touchscreen Span Button Not Visible Inability to Zero Touchscreen Zero Button Not Visible Box or Sample Temperature Other Performance ProblemsTemperature Problems Bench Temperature GFC Wheel Temperature IR Photo-Detector TEC Temperature Excessive Noise DC Power Test Point and Wiring Color Codes AC Mains ConfigurationDC Power Supply Name Test POINT# TP and Wire Color Touchscreen Interface DC Power Supply Acceptable Levels10.5.3. I2C Bus LCD Display Module Relay Board Control Devices Sensor AssemblySync/Demodulator Assembly Function Control Socket Device Opto Pickup Board Nominal Output Frequencies Opto Pickup AssemblyGFC Wheel Drive Nominal Measured Frequency Motherboard Pressure/Flow Sensor Assembly10.5.8.1. A/D Functions Teledyne Analytical Instruments 246 Step Nominal Output Voltage Analog Outputs Current LoopFull Scale Output Voltage Output Range Nominal Output Values Step Current Control Inputs Remote Zero, Span 12 Status Outputs Check General RS-232 Troubleshooting RS-232 Communications Teledyne Analytical Instruments 250 Repair Procedures Repairing Sample Flow Control Assembly 11 Opening the GFC Wheel Housing Removing/Replacing the GFC Wheel Disk-On-Module Replacement Procedure 12 Removing the GFC Wheel Teledyne Analytical Instruments 254 Static Generation Voltages for Typical Activities How Static Charges are CreatedMeans of Generation Damage Susceptibility Voltage How Electro-Static Charges Cause DamageSensitivity of Electronic Devices to Damage by ESD Device Range Basic Principles of Static Control Common Myths About ESD DamageGeneral Rules Teledyne Analytical Instruments 258 Working at the Instrument Rack Working at an Anti-ESD Work Bench Opening Shipments from Teledyne Instruments Customer Service Transferring Components from Rack to Bench and Back Teledyne Analytical Instruments 261 Teledyne Analytical Instruments 262