Teledyne gfc 7000ta - Manuals

Safety Messages Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments vi CONSIGNES DE SÉCURITÉ Des consignes de sécurité importantes sont fournies tout au long du présent manuel dans le but d’éviter des blessures corporelles ou d’endommager les instruments. Veuillez lire attentivem...

Manual Information Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments ix ABOUT THIS MANUAL This manual, PN 07272, provides operation instructions for the GFC 7000TA Analyzer, and supports operation of the Model GFC 7000T (when used in conjunction with the GFC 7000T Addendum, PN ...

Manual Information Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments x 2010, T360 Manual, PN0 Rev A, DCN Document PN Rev DCN Change Summary 0xxxx X Initial Release For the purpose of capturing this manual’s construct at its initial release, the following list documents the curr...

Table of Contents Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments xi TABLE OF CONTENTS SAFETY MESSAGES ............................................................................................................................................... v CONSIGNES DE SÉCURITÉ ........

Table of Contents Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments xii 6.2.1. Test Functions .......................................................................................................................................... 65 6.2.2. Warning Messages .....................

Table of Contents Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments xiv 10.5.4. Touchscreen Interface .......................................................................................................................... 242 10.5.5. LCD Display Module .........................

Table of Contents Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments xv LIST OF FIGURES Figure 3-1: Front Panel Layout ...................................................................................................................... 11 Figure 3-2: Display Screen and Touch C...

Table of Contents Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments xvi Figure 9-6: Chopped IR Signal .................................................................................................................... 191 Figure 9-7: Internal Pneumatic Flow – Basic Configurati...

Introduction Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 1 1. INTRODUCTION The Models GFC 7000TA and GFC 7000TM differ only in specifications; unless clearly differentiated, both models in this manual are referred to as the GFC 7000TA for simplification. The GFC 7000TA me...

Introduction Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 2 3 GETTING STARTED: Instructions for setting up, installing, and performing a functional check and initial calibration. 4 FAQ Answers to the most frequently asked questions about operating the analyzer. 5 OPTIONAL ...

Specifications Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 5 2. SPECIFICATIONS AND APPROVALS 2.1. Specifications Table 2-1: Model GFC 7000TA Basic Unit Specifications GFC 7000TA Parameter GFC 7000TA Specification Ranges (Physical Analog Output) Min: 0-2 ppm Full scale Max...

Specifications Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 6 GFC 7000TA Parameter GFC 7000TA Specification Weight 40 lbs. (18.1 kg) Certifications CE: EN61010-1:90 + A1:92 + A2:95, EN61326 - Class A 1 At constant temperature and voltage. Table 2-2: Model GFC 7000TM Basic ...

Specifications Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 7 GFC 7000TM Parameter GFC 7000TM Specification Certifications CE: EN61010-1:90 + A1:92 + A2:95, EN61326 - Class A 1 At constant temperature and voltage. 2.2. CE Mark Compliance Emissions Compliance The Teledyne I...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 9 3. GETTING STARTED 3.1. Unpacking and Initial Set Up CAUTION To avoid personal injury, always use two persons to lift and carry the Model GFC 7000TA. WARNING Never disconnect PCAs, wiring harnesses or electroni...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 10 4. Inspect the interior of the instrument to make sure all circuit boards and other components are in good shape and properly seated. 5. Check the connectors of the various internal wiring harnesses and pneuma...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 11 3.2. Front Panel Figure 3-1 shows the analyzer’s front panel layout, followed by a close-up of the display screen in Figure 3-2, which is described in Table 3-1. The two USB ports on the front panel are provid...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 12 Figure 3-2: Display Screen and Touch Control CAUTION – Avoid Damaging Touchscreen Do not use hard-surfaced instruments such as pens to operate the touchscreen. The front panel liquid crystal display includes t...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 13 Table 3-1: Display and Touchscreen Control Description Field Description/Function Status LEDs indicating the states of Sample, Calibration and Fault, as follows: Name Color State Definition SAMPLE Green Off On...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 14 Figure 3-3: Display/Touch Control Screen Mapped to Menu Charts

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 15 3.3. Rear Panel Figure 3-4: Rear Panel Layout Table 3-2 provides a description of each component on the rear panel

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 17 3.4. Internal Layout Figure 3-3 shows a top-down view of the analyzer. The shown configuration includes the Ethernet board, IZS option, zero-air scrubber and an additional sample dryer. See Section 5 for optio...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 18 GFC Temperature Sensor Shock Absorbing Mounting Bracket Purge Gas Inlet IR Source GFC Wheel Heat Sync GFC Wheel Motor Purge Gas Pressure Regulator Bench Temperature Thermistor Sample Chamber Pressure Sensor(s)...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 19 Purge G as Flow Control Figure 3-7: GFC 7000TA Internal Gas Flow 3.5. Electrical Connections WARNING Never disconnect PCAs, wiring harnesses or electronic subassemblies while the instrument is under power. NOT...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 21 Pin assignments for the Analog In connector are presented in Table 3-3. Table 3-3: Analog Input Pin Assignments PIN DESCRIPTION DAS PARAMETER 1 1 Analog input # 1 AIN 1 2 Analog input # 2 AIN 2 3 Analog input ...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 22 Table 3-4: GFC 7000TA Analog Output Pin Outs PIN ANALOG OUTPUT VDC SIGNAL MADC SIGNAL 1 A1 V Out I Out + 2 Ground I Out - 3 A2 V Out I Out + 4 Ground I Out - 5 A3 (Only used if O 2 sensor is installed) V Out I...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 23 3.5.4. Connecting the Status Outputs If you wish utilize the analyzer’s status outputs to interface with a device that accepts logic-level digital inputs, such as programmable logic controllers (PLC’s) they ar...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 25 3.5.6. Connecting the Communications Interfaces For RS-232 or RS-485 communications through the analyzer’s serial interface com ports, refer to Section 6.11 of this manual for instructions on their configurati...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 26 3.6.1. Basic Pneumatic Connections NOTE In order to prevent dust from getting into the gas flow channels of your analyzer, it was shipped with small plugs inserted into each of the pneumatic fittings on the ba...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 29 10. Attach a source of dried air scrubbed of CO 2 to the purge inlet port. NOTE The minimum gas pressure of the source of purge air should be 7.5 psig. If the source of the purge air is shared by a Teledyne In...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 30 3.6.2. Connections with Internal Valve Options Installed Figure 3-11 and Figure 3-12 show the pneumatic connections for the ambient zero and ambient span valve option (Option 50A). Figure 3-11: Pneumatic Conne...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 32 3.6.3. Pneumatic Connections in Multipoint Calibration Applications Some applications may require multipoint calibration checks where span gas of several different concentrations is needed. We recommend using ...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 33 6. Turn the instrument on. 7. Make sure the zero air supply to the analyzer’s purge line inlet is supplying gas at a stable pressure above 7.5 psig. 8. Adjust the GFC 7000TA’s pressure regulator until the atta...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 34 3.7.2. Warm Up During the warm-up period various portions of the instrument’s front panel may behave as indicated in Table 3-8. Table 3-8: Front Panel Display During System Warm-Up NAME COLOR BEHAVIOR SIGNIFIC...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 35 Table 3-9: Possible Warning Messages at Start-Up MESSAGE MEANING ANALOG CAL WARNING The instrument’s A/D circuitry or one of its analog outputs is not calibrated. BENCH TEMP WARNING The optical bench Temperatu...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 36 3.7.4. Functional Check 1. After the analyzer’s components has warmed up for at least 30 minutes, verify that the software properly supports any hardware options that were installed. 2. Check to make sure that...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 37 3.8. Initial Calibration Procedure The next task is to calibrate the analyzer. To perform the following calibration you must have sources for zero air and span gas available for input into the sample port on t...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 38 2. Set the expected CO 2 span gas concentration This sequence causes the analyzer to pr ompt for the expected CO 2 span concentration. M-P CAL CO2 SPAN CONC: 400.000 Conc 0 0 0 4 5 .0 ENTR EXIT M-P CAL R ANGE ...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 39 3. Perform the Zero/Span Calibration Procedure M- P CAL STABIL=XXX.X PPM CO2 =XXX.X < TST TST > ENTR CONC EXIT M- P CAL STABIL=XXX.X PPM CO2 =XXX.X < TST TST > C AL SETUP M- P CAL STABIL=XXX.X PPM ...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 40 3.8.1. Initial O 2 Sensor Calibration Procedure If your instrument has an O 2 sensor option installed that should be calibrated as well. 3.8.1.1. O 2 Calibration Setup The pneumatic connections for calibrating...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 41 SAMPLE GAS TO CAL:CO2 CO2 O2 ENTR EXIT SAMPLE RANGE = 500.000 PPM CO2 =XXX.X < TST TST > CAL SETUP M-P CAL A1:NXCNC1 =100PPM NOX=X.XXX <TST TST> ZERO SPAN CONC EXIT SAMPLE GAS TO CAL:O2 NOX O2 ENTR...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 42 SETUP X.X STABIL_GAS:O2 CO2 O2 ENTR EXIT Press EXIT 3 times to return to SAMPLE menu SAMPLE RANGE = 500.000 PPM CO2 =XXX.X < TST TST > CAL SETUP SETUP X.X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE EX...

Getting Started Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 43 STEP 4 – O 2 Zero/Span Calibration perform by pressing: The Model GFC 7000TA Analyzer is now ready for operation.

FAQ Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 45 4. FREQUENTLY ASKED QUESTIONS 4.1. FAQ’s The following is a list from the Teledyne Instruments’ Customer Service Department of the most commonly asked questions relating to the Model CO 2 Analyzer. Q: How do I get the ins...

FAQ Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 46 Q: Where is the sintered filter/sample flow control orifice? A: These components are located inside the flow control assembly that is attached to the inlet side of the sample pump, see Figure 3-3. See Section 11.6.1 for i...

FAQ Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 50 Tthis page intentionally left blank.

FAQ Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 51 5. OPTIONAL HARDWARE AND SOFTWARE This includes a brief description of the hardware and software options available for the Model GFC 7000TA Gas Filter Correlation Carbon Dioxide Analyzer. For assistance with ordering thes...

FAQ Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 52 Figure 5-1: Current Loop Option Installed on the Motherboard 5.2.1. Converting Current Loop Analog Outputs to Standard Voltage Outputs NOTE Servicing or handling of circuit components requires electrostatic discharge prot...

FAQ Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 53  Remove the set screw located in the top, center of the rear panel  Remove the screws fastening the top cover to the unit (four per side).  Slide the cover back and lift straight up . 4. Disconnect the current loop opt...

FAQ Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 54 5.4. Calibration Valves Options There are four available options involving Zero/span valves. From an operational and software standpoint, all of the options are the same, only the source of the span and zero gases are dif...

FAQ Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 55 GFC Wh ee l Hous ing SAMPLE CHAMBER GFC M o tor He at Sy nc Purg e Gas F low C o nt ro l Ext e rn al CO2 Sc rub ber (O pt io n 51 on ly ) Figure 5-2: Internal Pneumatic Flow – Ambient Zero/Pressurized Span Valves 5.4.2. A...

FAQ Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 56 The minimum span gas flow rate required for this option is 800 cm 3 /min. The state of the zero/span valves can also be controlled:  Manually from the analyzer’s front panel by using the SIGNAL I/O controls located under...

FAQ Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 57 5.5. Communication Options 5.5.1. Communications Cables Type Description 60A RS-232 Shielded, straight-through DB-9F to DB-25M cable, about 1.8 m long. Used to interface with older computers or code activated switches wit...

FAQ Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 59 Figure 5-5: Oxygen Sensor - Principle of Operation 5.6.1.2. Operation within the GFC 7000TA Analyzer The oxygen sensor option is transparently integrated into the core analyzer operation. All functions can be viewed or ac...

FAQ Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 60 Figure 5-6: GFC 7000TA – Internal Pneumatics with O2 Sensor Option 65

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 63 6. OPERATING INSTRUCTIONS To assist in navigating the analyzer’s software, a series of menu trees can be found in Appendix A-1 of this manual. NOTES The flow charts appearing in this contain typical rep...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 64 Besides SAMPLE and SETUP , other modes the analyzer can be operated in are: Table 6-1: Analyzer Operating modes MODE MEANING DIAG One of the analyzer’s diagnostic modes is being utilized (See Section 6....

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 66 To view the TEST Functions press: RANG E RANGE1 1 RANGE2 1 O 2 RANGE ST ABIL M EAS RE F MR RATI O PRES SAMP FL S AM P T EMP BENCH T EMPW HE EL T EM P BOX TEM P PHT DRIVE SL OPE OF FSET T EST T IME SA MP...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 69 6.4. SETUP MODE The SETUP mode contains a variety of choices that are used to configure the analyzer’s hardware and software features, perform diagnostic procedures, gather information on the instrument...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 70 6.5. SETUP  CFG: Viewing the Analyzer’s Configuration Information Pressing the CFG button displays the instrument configuration information. This display lists the analyzer model, serial number, firmwa...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 71 6.7. SETUP  DAS: Using the Data Acquisition System (DAS) The GFC 7000TA analyzer contains a flexible and powerful, internal data acquisition system (DAS) that enables the analyzer to store concentratio...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 72 6.7.1. DAS Structure The DAS is designed around the feature of a “record”. A record is a single data point of one parameter, stored in one (or more) data channels and generated by one of several trigger...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 73 6.7.1.2. DAS Parameters Data parameters are types of data that may be measured and stored by the DAS. For each Teledyne Instruments analyzer model, the list of available data parameters is different, fu...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 74 6.7.1.3. DAS Triggering Events Triggering events define when and how the DAS records a measurement of any given data channel. Triggering events are firmware-specific and a complete list of Triggers for ...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 75 TEMP: Samples the analyzer’s bench temperature, box temperature and PHT cooler drive voltage every five minutes and records an average once every six hours. Data from the last 400 averaging periods is r...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 78 6.7.2.3. Editing DAS Data Channels DAS configuration is most conveniently done through the APICOM remote control program. The following list of key strokes shows how to edit using the front panel. Main ...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 79 To edit the name of a data channel, follow the above touchscreen button sequence and then press: From the end of the p revious button sequence … SETUP X.X NAME:CONC C O N C - - ENTR EXIT ENTR accepts th...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 81 To configure a specific data parameter, press: FROM THE E DIT DA TA PA RAMETE R MENU (see previous sectio n) SETUP X.X 0) PARAM=CONC 1, M ODE=AVG PREV NEXT INS DEL EDIT EXIT SETUP X.X PARAMETERS:CONC1 S...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 83 To define the REPORT PERIOD , follow the instruction shown in Section 6.7.2.2 then press: Edit Data Channel Menu SETUP X.X 0) CONC: ATIM ER, 1, 900 PREV NEXT INS DEL EDIT PRNT EXIT SETUP X.X NAME:CONC &...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 84 6.7.2.7. Number of Records The number of data records in the GFC 7000TA is limited to about a cumulative one million data points in all channels (one megabyte of space on the disk-on-chip). However, the...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 85 6.7.2.8. RS-232 Report Function The GFC 7000TA DAS can automatically report data to the communications ports, where they can be captured with a terminal emulation program or simply viewed by the user. T...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 88 6.7.3. Remote DAS Configuration Editing channels, parameters and triggering events as described in this can be performed via the APICOM remote control program using the graphic interface shown in Figure...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 89 6.8. SETUP  RNGE: Analog Output Reporting Range Configuration The analyzer has three active analog output signals, accessible through a connector on the rear panel. Test Channel ANALOG OUT A1 A2 A3 A4 ...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 90 6.8.1. Physical Range versus Analog Output Reporting Ranges Functionally, the Gas Filter Correlation CO 2 Analyzer has one hardware Physical Range that is capable of determining CO 2 concentrations betw...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 91 To select the Analog Output Range Type press: SAMPLE* RANGE = 500.000 PPM CO2 =X.XXX < TST TST > CAL SETUP SAMPLE ENTER SETUP PASS : 818 8 1 8 ENTR EXIT SETUP X.X CFG DAS RNGE PASS CLK MORE EXIT S...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 92 6.8.3. Single Range Mode (SNGL) This is the default reporting range mode for the analyzer. In single range mode both A1 and A2 are set to the same reporting range. This reporting range can be any value ...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 93 6.8.4. Dual Range Mode (DUAL) Selecting Dual Range mode allows the A1 and A2 outputs to be configured with different reporting ranges. The analyzer software calls these two ranges low and high. The low ...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 94 6.8.5. Auto Range Mode (AUTO) In AUTO range mode, the analyzer automatically switches the reporting range between two user-defined ranges (low and high). The unit will switch from low range to high rang...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 95 6.8.6. Range Units The GFC 7000TA can display concentrations in parts per billion (10 9 mols per mol, PPB ), parts per million (10 6 mols per mol, PPM ), micrograms per cubic meter (µg/m 3 , UG ), milli...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 96 6.8.7. Dilution Ratio The dilution ratio is a software option that allows the user to compensate for any dilution of the sample gas before it enters the sample inlet. Using the dilution ratio option is ...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 97 6.9. SETUP  PASS: Password Feature The GFC 7000TA provides password protection of the calibration and setup functions to prevent unauthorized adjustments. When the passwords have been enabled in the PA...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 101 6.11. SETUP  MORE  COMM: Using the Analyzer’s Communication Ports The GFC 7000TA is equipped with an Ethernet port, a USB port and two serial communication (COMM) ports located on the rear panel (Fig...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 103 Figure 6-7: Rear Panel Connector Pin-Outs for COM1 & COM2 in RS-232 Mode The signals from these two connectors are routed from the motherboard via a wiring harness to two 10-pin connectors on the C...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 106 6.11.5. COM Port Communication Modes Each of the analyzer’s serial ports can be configured to operate in a number of different modes, listed in Table 6-10 which can be combined by adding the mode ID nu...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 107 Press the following touchscreen buttons to select a communication mode for one of the com Ports, such as the following example where HESSEN PROTOCOL mode is enabled: Continue pr essing next until … SET...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 108 6.11.6. Remote Access via the Ethernet When using the Ethernet interface, the analyzer can be connected to any standard 10BaseT or 100Base T Ethernet network via low-cost network hubs, switches or rout...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 109 Table 6-12: LAN/Internet Configuration Properties PROPERTY DEFAULT STATE DESCRIPTION DHCP ON This displays whether the DHCP is turned ON or OFF. Press EDIT and toggle ON for automatic configuration aft...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 111 6.11.6.2. Manually Configuring the Ethernet (Static IP Address) To configure Ethernet communication manually: 1. Connect a cable from the analyzer’s Ethernet port to a Local Area Network (LAN) or Inter...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 112 Next, refer to Table 6-12 for the default Ethernet configuration settings and configure the INSTRUMENT IP addresses by pressing:

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 113 6.11.6.3. Changing the Analyzer’s HOSTNAME The HOSTNAME is the name by which the analyzer appears on your network. The default name for all Teledyne Instruments Model GFC 7000TA analyzers is GFC 7000TA...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 114 6.11.7. Multidrop RS-232 Set Up The RS-232 multidrop consists of a printed circuit assembly that is seated on the analyzer’s CPU card (see Figures 6-10 and 6-13) and is connected to the CPU and the mot...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 115 4. Connect a cable between the Multidrop/LVDS card J4 and the motherboard P12. 5. Connect a cable between the Multidrop/LVDS card J3 and the CPU COM1 connector. 6. Close the instrument. 7. Using straig...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 116 6.11.8. COM Port Baud Rate To select the baud rate of one of the COM Ports, press: E XA MP LE SETUP X.X COM1 BAUD RATE:1920 0 PREV NEXT ENTR EXIT SETUP X.X COM1 BAUD RATE:9600 NEXT ON ENTR EXIT SETUP X...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 118 6.12. SETUP  MORE  VARS: Internal Variables (VARS) The GFC 7000TA has several-user adjustable software variables, which define certain operational parameters. Usually, these variables are automatical...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 120 6.13. SETUP  MORE  DIAG: Using the Diagnostics Functions A series of diagnostic tools is grouped together under the SETUP  MORE  DIAG menu. As these parameters are dependent on firmware revision (s...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 121 6.13.1. Accessing the Diagnostic Features To access the DIAG functions press the following buttons: SETUP X.X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE EXIT SETUP X.X SECONDARY SETUP MENU COMM VARS...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 123 To begin the Analog Output Step Test press: SETUP X.X SECONDAR Y SETUP MENU COMM VARS DIAG ALR M EXIT SAMPLE RANGE = 500.000 PPM CO2 =X.XXX < TST TST > CAL SETUP SETUP X.X PRIM ARY SETU P MENU CF...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 124 To configure the analyzer’s three analog outputs, set the electronic signal type of each channel and calibrate the outputs. This consists of:  Selecting an output type (voltage or current, if an optio...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 125 The following DC current output limits apply to the current loop modules: Table 6-18: Analog Output Current Loop Range RANGE MINIMUM OUTPUT MAXIMUM OUTPUT 0-20 mA 0 mA 20 mA These are the physical limi...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 129 To select manual output calibration for a particular channel, activate the ANALOG I/O CONFIGURATION MENU (See Section 6.13.1), then press: DIAG AIO CONC_OUT_2 AUTO CAL: ON ON ENTR EXIT Exit to return t...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 130 V +DC Gnd V OUT + V OUT - V IN + V IN - RecordingDevice ANALYZER See Table 3-1 for pin assignments of Analog Out connector on the rear panel Figure 6-11: Setup for Calibrating Analog Voltage Outputs To...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 132 mA IN OUT V OUT + V OUT - I IN + I IN - RecordingDevice Analyzer See Table 3-1 for pin assignments of the Analog Out connector on the rear panel. Figure 6-12: Setup for Calibrating Current Outputs NOTE...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 133 DIAG AIO CONC_OUT_2 SPAN: 10000 mV U100 UP10 UP DOWN DN10 D100 ENTR EXIT DIAG AIO AUTO CALIBRATING CONC_OUT_2 DIAG AIO AIN CALIBRATED: NO SET> EDIT EXIT DIAG ANALOG I / O CONFIGURATION PREV NEXT ENT...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 134 6.13.4.5. AIN Calibration This is the sub-menu to conduct the analog input calibration. This calibration should only be necessary after major repair such as a replacement of CPU, motherboard or power s...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 136 6.13.5. Electric Test The electric test function substitutes simulated signals for CO 2 MEAS and CO 2 REF , generated by circuitry on the sync/demod board, for the output of the IR photo-detector. Whil...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 137 6.13.6. Dark Calibration Test The dark calibration test interrupts the signal path between the IR photo-detector and the remainder of the sync/demod board circuitry. This allows the instrument to compe...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 138 6.13.7. Pressure Calibration A sensor at the exit of the sample chamber continuously measures the pressure of the sample gas. This data is used to compensate the final CO 2 concentration calculation fo...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 140 6.13.9. Test Channel Output When activated, output channel A4 can be used to report one of the test functions viewable from the SAMPLE mode display. To activate the A4 channel and select a test functio...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 141 * This refers to the internal voltage level of the function NOT the output signal level of the Test channel itself. 6.14. SETUP  MORE  ALRM: Using the Gas Concentration Alarms The Model GFC 7000TA in...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 142 6.14.1. Setting the Concentration Alarm Limits To enable either of the CO 2 concentration alarms and set the Limit points, press: ENTR accepts the new setti ngs EXIT ignores the new setti ngs SETUP X. ...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 143 Co n n ect t o I n terna l G roun d of Mon it o ring D e v ice STATUS 1 2 3 4 5 6 7 8 D + SY ST E M O K H IG H RANG E C O NC V A LI D ZERO CA L SP A N C A L DIAGNO S T IC MOD E ALA R M 1 ALA R M 2 Figu...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 144 The pin assignments for the Status Outputs are: Table 6-24: Status Output Pin Assignments OUTPUT # Status Definition Condition 1 SYSTEM OK On if no faults are present. 2 CONC VALID On if CO 2 concentra...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 145 6.15.1.2. Control Inputs These inputs allow the user to remotely initiate Zero and Span calibrations. Two methods for energizing the inputs is provided below; the first using the internal +5V available...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 146 6.15.2. Remote Operation Using the External Serial I/O 6.15.2.1. Terminal Operating Modes The Model GFC 7000TA can be remotely configured, calibrated or queried for stored data through the serial ports...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 147 6.15.2.3. Command Syntax Commands are not case-sensitive and all arguments within one command (i.e. ID numbers, keywords, data values, etc.) must be separated with a space character. All Commands follo...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 150 6.15.2.6. Remote Access by Modem The GFC 7000TA can be connected to a modem for remote access. This requires a cable between the analyzer’s COM port and the modem, typically a DB-9F to DB-25M cable (av...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 151 To initialize the modem press: SETUP X.X SECOND ARY SETUP MENU COM M VARS DIAG ALRM EXIT SETUP X.X PRIMARY SETUP MENU C FG DAS RNGE PASS CLK MORE EXIT SAMPLE* RANGE = 500.000 PPM CO2 =X.XXX < TST TS...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 152 Where N is any numeral between 0 and 9. 6.15.2.8. APICOM Remote Control Program APICOM is an easy-to-use, yet powerful interface program that allows accessing and controlling any of Teledyne Instrument...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 153 APICOM is included free of cost with the analyzer and the latest versions can also be downloaded for free at http://www.teledyne-api.com/software/apicom/. 6.15.3. Additional Communications Documentatio...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 154 6.15.4.2. Hessen com Port Configuration Hessen protocol requires the communication parameters of the GFC 7000TA’s com ports to be set differently than the standard configuration as shown in the table b...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 155 6.15.4.3. Activating Hessen Protocol The first step in configuring the GFC 7000TA to operate over a Hessen protocol network is to activate the Hessen mode for com ports and configure the communication ...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 157 To Select a Hessen response mode, press: SETUP X.X SECOND ARY SETUP MENU COMM VARS DIAG ALRM EXIT SETUP X.X PRIMARY SETUP MENU CFG DAS RNGE PASS CLK MORE EXIT SAMPLE* RANGE = 500.000 PPM CO2 =X.XXX <...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 158 6.15.4.7. Setting Hessen Protocol Status Flags Teledyne Instruments’ implementation of Hessen protocols includes a set of status bits that the instrument includes in responses to inform the host comput...

Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 159 To assign or reset the status flag bit assignments, press: SETUP X.X SECONDARY SETUP MENU C OMM VARS DIAG ALRM EXIT SETUP X.X PRIMARY SETUP M ENU CFG DAS RNGE PASS CLK MORE EXIT SAMPLE* RANGE = 500.000...

Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 161 7. CALIBRATION PROCEDURES This contains a variety of information regarding the various methods for calibrating a Model GFC 7000TA CO 2 Analyzer as well as other supporting information. NOTE The procedu...

Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 162 7.1.2. Calibration Gas Traceability All equipment used to produce calibration gases should be verified against standards of the National Institute for Standards and Technology (NIST). To ensure NIST tr...

Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 163 Figure 7-2: Pneumatic Connections–Basic Configuration–Using Gas Dilution Calibrator STEP TWO: Set the expected CO 2 Span Gas concentration: Thi s sequence causes the anal yzer to prompt for the expecte...

Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 164 STEP THREE: Perform the Zero/Span Calibration Procedure: M-P CAL STABIL=XXX.X PPM CO2 =XXX.X < TST TST > ENTR CONC EXIT M-P CAL STABIL=XXX.X PPM CO2 =XXX.X < TST TST > CAL SETUP M-P CAL STA...

Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 165 7.3. Manual Calibration Checks Informal calibration checks, which only evaluate but do not alter the analyzer’s response curve, are recommended as a regular maintenance item and in order to monitor the...

Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 166 7.4. Manual Calibration with Zero/Span Valves There are four different zero/span valve option configurations (See Section 5.4). They all operate identically, differing only in the method used to supply...

Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 167 Source of SAMPLE GAS Removed during calibration VENT Calibrated CO 2 Gas at span gas concentration VENT here if input is pressurized Chassis PRESSURE SPAN IZS PURGE LINE SAMPLE EXHAUST VENT SPAN Extern...

Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 168 Source of SAMPLE GAS Removed during calibration Calibrated CO 2 Gas at 100x span gas concentration VENT here if input is pressurized Chassis PRESSURE SPAN IZS PURGE LINE SAMPLE EXHAUST VENT SPAN Model ...

Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 172 7.5.1. Zero/Span Calibration on Auto Range or Dual Ranges If the analyzer is being operated in dual range mode or auto range mode, then the high and low ranges must be independently calibrated. When th...

Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 173 7.5.2. Use of Zero/Span Valves with Remote Contact Closure Contact closures for controlling calibration are located on the rear panel CONTROL IN connector. Instructions for setup and use of these conta...

Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 175 To program the Sequence: Tog gle bu ttons to set number of days between proced ures (1 -36 7) Togg le bu ttons to set de lay tim e for ea ch iteration of the sequence: HH:MM (0 – 24:00) S ETUP X.X DELT...

Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 176 7.6.1. AutoCal with Auto or Dual Reporting Ranges Modes Selected SETUP C.4 RANGE TO CAL: HIGH <SET EDIT EXIT EXIT returns to the PRIMARY SETUP Menu SETUP C.4 SEQ 2) ZERO–SPAN, 2:00:30 PREV NEXT MODE...

Calibration Procedures Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 177 The default DAS configuration records all calibration values in channel CALDAT as well as all calibration check (zero and span) values in its internal memory. Up to 200 data points are stored for up 4 ...

Maintenance Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 182 Table 8-2: GFC 7000TA Test Function Record FUNCTION OPERATING MODE* DATE RECORDED STABILITY ZERO CAL CO2 MEAS ZERO CAL MR RATIO Zero CAL SPAN CAL PRES SAMPLE PHT DRIVE SAMPLE After Warm-up SLOPE SPAN CAL OFFSET Z...

Maintenance Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 183 8.2. Predicting Failures Using the Test Functions The Test Functions can be used to predict failures by looking at how their values change over time. Initially it may be useful to compare the state of these Test ...

Maintenance Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 184 8.3. Maintenance Procedures The following procedures are to be performed periodically as part of the standard maintenance of the Model GFC 7000TA. 8.3.1. Replacing the Sample Particulate Filter The particulate fi...

Maintenance Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 185 8.3.2. Rebuilding the Sample Pump The diaphragm in the sample pump periodically wears out and must be replaced. A sample rebuild kit is available – see Appendix B of this manual for the part number of the pump re...

Maintenance Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 186 4. Pressurize the instrument with the leak checker, allowing enough time to fully pressurize the instrument through the critical flow orifice. Check each fitting with soap bubble solution, looking for bubbles. On...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 187 9. THEORY OF OPERATION The Model GFC 7000TA Gas Filter Correlation Carbon Dioxide Analyzer is a microprocessor-controlled analyzer that determines the concentration of carbon dioxide (CO 2 ) in a sample g...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 188 directed through multi-pass cell filled with sample gas. The sample cell uses mirrors at each end to reflect the IR beam back and forth through the sample gas to generate a 2.5 meter absorption path (see ...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 189 IR Source Photo-Detector M R G FC W heel IR un affecte d by N 2 in Measurement Ce ll IR IS affected by CO 2 in Reference Cell Δ H Figure 9-3: Measurement Fundamentals with GFC Wheel As the GFC wheel spins...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 190 IR unaffected by N 2 in Measurement Cell of the GFC W heel and no additional CO 2 in t he Sample Chamber IR aff ec ted by CO 2 in Reference Cell with no interfering gas in the Sample Chamber IR shinning t...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 191 IR shining through both cells is effected equally by interfering gas in the Sample Chamber M/R is Shifted Figure 9-5: Effects of Interfering Gas on CO2 MEAS & CO2 REF Thus, the difference in the peak ...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 192 9.1.4.1. Ambient CO 2 Interference Rejection CO 2 absorbs IR light very well. So well that even the narrow volume of ambient air between the IR source and the sample chamber is enough to alter the analyze...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 193 9.2. Pneumatic Operation CAUTION It is important that the sample airflow system is both leak tight and not pressurized over ambient pressure. Regular leak checks should be performed on the analyzer as des...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 194 9.2.1. Sample Gas Flow SAMPLE PRESSURE SENSOR CO 2 FLOW SENSOR Sample Gas Flow Control Purge Gas Flow Control Purge Gas Pressure Control Figure 9-7: Internal Pneumatic Flow – Basic Configuration 9.2.2. Fl...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 195 pressure is greater than 2:1, the velocity of the gas through the orifice reaches the speed of sound. As long as that ratio stays at least 2:1 the gas flow rate is unaffected by any fluctuations, surges, ...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 196 9.2.3. Purge Gas Pressure Control In order to ensure that all of the ambient CO 2 is purged from the GFC Wheel housing an adequate supply of dried air, scrubbed of CO 2 must be supplied to the PURGE AIR i...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 197 9.3. Electronic Operation 9.3.1. Overview Figure 10-9 shows a block diagram of the major electronic components of the Model GFC 7000TA. The core of the analyzer is a microcomputer/central processing unit ...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 198 Ana log Outputs Sample Flow & P ressure Sensors Status Outputs: 1 – 6 Contr ol Inputs: 1 – 8 PC 104 CPU Card Disk On Module Flash Ch ip P owe r-Up Circuit Internal Dig ital I/O I 2 C Bus Sensor I nput...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 199 9.3.2. CPU The unit’s CPU card, installed on the motherboard inside the rear panel, is a low power (5 VDC, 720mA max), high performance, Vortex 86SX-based microcomputer running Windows CE. Its operation a...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 200 9.3.3. Optical Bench & GFC Wheel Electronically, the Model GFC 7000TA’s optical bench, GFC wheel and associated components do more than simply measure the amount of CO 2 present in the sample chamber....

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 201 9.3.3.3. GFC Wheel A synchronous AC motor turns the GFC wheel motor. For analyzers operating on 60Hz line power this motor turns at 1800 rpm. For those operating on 50Hz line power the spin rate is 1500 r...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 202 Reference Pulses Measurement Pulses IR Beam Pulses Segment Sensor Pulses MR Sensor Pulses Figure 9-12: Segment Sensor and M/R Sensor Output Schmidt Triggers To ensure that the waveforms produced by the Se...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 203 Thermo-Electric Cooler Control Circuit Sample & Hold Circuits (x4) Amplifiers Dark Switch Photo- detector Pre Amp Phase Lock Loop E-Test Generator Compact Programmable Logic Device M/R Sensor Segment ...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 204 The four sample and hold circuits are: DESIGNATION ACTIVE WHEN: IR BEAM PASSING THROUGH SEGMENT SENSOR PULSE IS: Measure Gate MEASUREMENT cell of GFC Wheel HIGH Measure Dark Gate MEASUREMENT cell of GFC W...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 205 9.3.4.4. Photo-Detector Temperature Control The synch/demod board also contains circuitry that controls the IR photo-detector’s thermoelectric coolers. A drive voltage, PHT DRIVE , is supplied to the cool...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 206 9.3.5.3. Zero/Span Valve Options Any zero/span valve options installed in the analyzer are controlled by a set of electronic switches located on the relay board. These switches, under CPU control, supply ...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 207 STATUS LED’s DC VOLTAGE TEST POINTS RELAY PCA Figure 9-15: Location of relay board Status LED’s 9.3.5.6. I 2 C Watch Dog Circuitry Special circuitry on the relay board monitors the activity on the I 2 C b...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 208 The A/D can be configured for several different input modes and ranges but in the GFC 7000TA is used in uni-polar mode with a +5 V full scale. The converter includes a 1% over and under-range. This allows...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 210 9.3.6.6. External Digital I/O This External Digital I/O performs two functions: status outputs and control inputs. Status Outputs Logic-Level voltages are output through an optically isolated 8-pin connec...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 211 9.3.8. Power Supply/ Circuit Breaker The analyzer operates on 100 VAC, 115 VAC or 230 VAC power at either 50Hz or 60Hz. Individual units are set up at the factory to accept any combination of these five a...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 212 9.4. Front Panel Touchscreen/Display Interface Users can input data and receive information directly through the front panel touchscreen display. The LCD display is controlled directly by the CPU board. T...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 213 9.5. Software Operation The Model GFC 7000TA Gas Filter Correlation Carbon Dioxide Analyzer has a high performance, VortexX86-based microcomputer running Windows CE. Inside Windows CE, special software de...

Theory of Operation Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 214 includes, by default, the last 48 samples, approximately 10 seconds of data, to allow the analyzer to more quickly respond. If necessary, these boxcar lengths can be changed between 1 and 1000 samples but...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 217 10. TROUBLESHOOTING & REPAIR PROCEDURES This contains a variety of methods for identifying the source of performance problems with the analyzer. Also included in this are procedures that are used in repai...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 219 To view or clear the various warning messages press: SAMPLE WHEEL TEMP WARNING CO2 = XX.XX TEST CAL MSG CLR SETUP Make sure warning messages are not due to legitimate problems.. Press CLR to clear the message...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 220 Table 10-1: Warning Messages - Indicated Failures WARNING MESSAGE FAULT CONDITION POSSIBLE CAUSES BENCH TEMP WARNING The optical bench temp is controlled at 48  2 ° C. Bad bench heater Bad bench temperature ...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 221 Table 11-1: Warning Messages – Indicated Failures (cont.) WARNING MESSAGE FAULT CONDITION POSSIBLE CAUSES SAMPLE TEMP WARN Sample temperature is < 10 o C or > 100 o C. Ambient temperature outside of spe...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 223 TEST FUNCTIONS INDICATED FAILURE(S) SLOPE Values outside range indicate Contamination of the zero air or span gas supply Instrument is miss-calibrated Blocked gas flow Contaminated or leaking GFC wheel (eithe...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 224 Toggles parameter ON/OFF Exit returns to DIAG display & all values return to software control DIAG SIGNAL I/O PREV NEXT ENTR EXIT DIAG I/O 0 ) EXT_ZERO_CAL=ON PREV NEXT JUMP PRNT EXIT DIAG I/O 22 ) WHEEL_...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 225 seconds, DS5 should flash on and off. If characters are written to the front panel display but DS5 does not flash then the program files have become corrupted. If after 30 – 60 seconds neither the DS5 is flas...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 226 D1 – M/R Sensor Status D2 – Segment Sensor Status JP4 Connector to Opto-Pickup Board Figure 10-4: Sync/Demod Board Status LED Locations 10.1.4.3. Relay Board Status LEDs There are eight LEDs located on the Re...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 227 Table 10-5: Relay Board Status LED Failure Indications LED FUNCTION SIGNAL I/O PARAMETER DIAGNOSTIC TECHNIQUE ACTIVATED BY VIEW RESULT D2 Yellow WHEEL HEATER WHEEL_HEATER WHEEL_TEMP Voltage displayed should c...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 228 10.2. Gas Flow Problems The GFC 7000TA has two main gas flow path, the sample gas flow path and the GFC purge gas flow path. Both are controlled by a critical flow orifice. Only the sample gas path is measure...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 229 10.2.1. GFC 7000TA Internal Gas Flow Diagrams G F C Wheel Ho using SAMPLE CHAMBER GFC M o to r Heat Sync Pu rg e Ga s Fl ow C ontrol Figure 10-6: GFC 7000TA – Basic Internal Gas Flow

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 230 Flow / PressureSensor PCA SAMPLE PRESSURE SENSOR CO 2 FLOW SENSOR SAMPLE GAS INLET EXHAUST GAS OUTLET GF C W h ee l Housin g SAMPLE CHAMBER G F C Motor Hea t Sy nc PUMP PURGE GAS INLET Sample Gas Flow Control...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 235 10.3. Calibration Problems 10.3.1. Miscalibrated There are several symptoms that can be caused by the analyzer being miss-calibrated. This condition is indicated by out of range Slopes and Offsets as displaye...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 236 10.3.2. Non-Repeatable Zero and Span As stated earlier, leaks both in the GFC 7000TA and in the external system are a common source of unstable and non-repeatable readings. 1. Check for leaks in the pneumatic...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 237 10.3.4. Inability to Zero – Touchscreen ZERO Button Not Visible 1. Confirm that there is a good source of zero air. Dilute a tank of span gas with the same amount of zero air from two different sources. If th...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 238 10.4. Other Performance Problems Dynamic problems (i.e. problems which only manifest themselves when the analyzer is monitoring sample gas) can be the most difficult and time consuming to isolate and resolve....

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 240 10.4.2. Excessive Noise Noise is continuously monitored in the TEST functions as the STABIL reading and only becomes meaningful after sampling a constant gas concentration for at least 10 minutes. Compare the...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 241 10.5. Subsystem Checkout The preceding s of this manual discussed a variety of methods for identifying possible sources of failures or performance problems within the analyzer. In most cases this included a l...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 242 A voltmeter should be used to verify that the DC voltages are correct per the values in the table below, and an oscilloscope, in AC mode, with band limiting turned on, can be used to evaluate if the supplies ...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 243 10.5.6. Relay Board The relay board PCA (04135) can be most easily checked by observing the condition of the its status LEDs on the relay board, as described in Section 10.1.4.3, and the associated output whe...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 244  If they are not then either the sync demodulator board or the IR-photodetector are bad. See Section 10.4.1.4 for problems with the IR-photodetector TEC drive. 10.5.7.2. Opto Pickup Assembly Operation of the...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 245 3. If the drive voltage is correct in step 2, then remove the source from the heat sink assembly (2 screws on top) and connect to its mating connector. Observe the light being emitted from the source. It shou...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 249 10.5.9. CPU There are two major types of failures associated with the CPU board: complete failure and a failure associated with the Disk on Module (DOM). If either of these failures occur, contact the factory...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 250 10.5.10.2. Troubleshooting Analyzer/Modem or Terminal Operation These are the general steps for troubleshooting problems with a modem connected to a Teledyne Instruments analyzer. 1. Check cables for proper c...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 251 10.6. Repair Procedures This contains procedures that might need to be performed on rare occasions when a major component of the analyzer requires repair or replacement. 10.6.1. Repairing Sample Flow Control ...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 252 10.6.2. Removing/Replacing the GFC Wheel When removing or replacing the GFC Wheel it is important to perform the disassembly in the following order to avoid damaging the components: 1. Turn off the analyzer. ...

Troubleshooting Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 254 6. Install the new Disk-on-Module, making sure the notch at the end of the chip matches the notch in the socket. 7. It may be necessary to straighten the pins somewhat to fit them into the socket. Press the c...

ESD Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 255 11. A PRIMER ON ELECTRO-STATIC DISCHARGE Teledyne Instruments considers the prevention of damage caused by the discharge of static electricity to be extremely important part of making sure that your analyzer continues to...

ESD Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 256 Poly bag picked up from bench 1,200V 20,000V Moving around in a chair padded with urethane foam 1,500V 18,000V 11.2. How Electro-Static Charges Cause Damage Damage to components occurs when these static charges come into...

ESD Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 257  Whenever a sensitive device is moved into the field of an existing electro-static field, a charge may be induced on the device in effect discharging the field onto the device. If the device is then momentarily grounded...

ESD Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 258 W r i s t S t r a p P r o t e c t i v e M a t G r o u n d P o i n t Figure 11-2: Basic anti-ESD Work Station For technicians that work in the field, special lightweight and portable anti-ESD kits are available from most ...

ESD Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 259 11.4.2. Basic anti-ESD Procedures for Analyzer Repair and Maintenance 11.4.2.1. Working at the Instrument Rack When working on the analyzer while it is in the instrument rack and plugged into a properly grounded power su...

ESD Model GFC7000TA Carbon Dioxide Analyzer Teledyne Analytical Instruments 261 11.4.2.5. Packing Components for Return to Teledyne Instruments Customer Service. Always pack electronic components and assemblies to be sent to Teledyne Instruments Customer Service in anti-ESD bins, tubes or bags. WARN...