Home

DigitalFlow™ GF868 - GE Measurement & Control

Contents

1. 120 88 22 10 Places 1 20 30 1 40 36 0 38 10 4 Places m zn 8 00 203 yn A i i i i 2 87 H 73 H Y H i 13 00 13 49 7 00 330 343 178 H Y 00 13 3 4 Places alias 11 87 289 E 10 74 273 3 4 Conduit Plate 1 2 Conduit Plate l l 1 54 39 1 30 33 N 1 65 42 2 2 2 1 77 45 2 t t 2 26 57 e e 2 26 57 1 50 38 Figure 8 Model GF868 Type 4X Enclosure ref dwg 425 208 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 17 Chapter 1 Installation RS232 SERIAL PORT RS485 PORT MODBUS Pin Description Pin Description 1 RTN Digital Return 1 TMT 2 TX Transmit 2 TMT 3 RX Receive 3 Unused 4 DTR Data Terminal Ready 4 Unused 5 CTS Clear to Send 5 Unused NOTE For compliance with the European Union s Low Voltage Directive 73 23 EEC this unit requires an external power disconnect device such as a switch or circuit breaker The disconnect device must be marked as such clearly visible directly accessible and located within 1 8 m 6 ft of the Model DF868 TB1 POWER INPUT TB1 POWER INPUT TB1 POW
2. Figure 3 Wiring the Line Power DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 1 Installation 1 0 1 Wiring the Transducers ATTENTION EUROPEAN CUSTOMERS To meet CE Mark requirements all cables must be installed as described in Appendix A CE Mark Compliance Wiring the GF868 ultrasonic flare gas flowmeter system requires interconnection of the following components e a pair of transducers mounted in the flowcell apreamplifier for each channel e an optional lightning protector e the GF868 console Use a coaxial cable to make all connections between the console and the transducers Connect the transducers to terminal block CH1 as shown in Figure 9 on page 18 and Figure 10 on page 19 WARNING Before connecting the transducers discharge any static buildup in a safe area by shorting the center conductor of the transducer cables to the metal shield of the cable connector 1 0 1 Wiring the 0 4 20 mA Analog Outputs The standard GF868 comes with two isolated 0 4 20 mA analog outputs A and B Use standard twisted pair wiring to make connections to these outputs The current loop impedance must not exceed 550 ohms Refer to Figure 9 on page 18 and connect the wires to the terminal block I O as shown 1 0 2 Wiring the Serial Port The Model GF868 is equipped with a built in serial communications port The standard port is an RS232 interface
3. Figure 14 Model GF868 Rack Mount Enclosure ref dwg 1712 1078 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 55 Appendix C Optional Enclosures CH2 TRANSDUCER RS232 SERIAL PORT DB9 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide BNC Description NOTE For compliance with the European Union s Low Voltage Pin Description UP Upstream XDCR Directive 73 23 EEC this unit requires an external power 1 No Connection DN Downstream XDCR disconnect device such as a switch or circuit breaker The 2 TX Transmit disconnect device must be marked as such clearly visible directly accessible and located within 1 8 m 6 ft of the 3 RX Receive Model GS868 4 DTR Data Terminal Ready CH1 TRANSDUCER 5 RTN Digital Return BNC Description 6 No Connection UP Upstream XDCR No
4. Chapter 4 Specifications Chapter 4 Specifications 4 1 General Specifications The general specifications for the Model GF868 flowmeter are divided into the following categories 4 1 1 Hardware Configuration Package Options Epoxy coated aluminum standard Stainless steel optional Fiberglass optional Explosion proof optional Flameproof optional Physical Epoxy coated aluminum package Size 14 24 x 11 4 x 5 12 in 36 2 x 29 x 13 cm Weight 11 Ib 5 kg 4 1 2 Environmental Operating Temperature 4 to 131 F 20 to 55 C Storage Temperature 67 to 167 F 55 to 75 C 4 1 3 Flow Accuracy of Reading Velocity Accuracy 1 Path Measurement 2 to 5 of reading at 1 to 275 ft s 40 3 to 85 m s 2 Path Measurement 1 4 to 3 5 of reading at 1 to 275 ft s 0 3 to 85 m s Note Specifications assume a fully developed flow profile This is installation dependent and may require a straight run of pipe 20 diameters upstream and 10 diameters downstream Accuracy depends on whether measurement is l or 2 path 4 1 4 Range Bi directional 275 to 0 1 ft s 85 to 0 03 m s 0 1 to 275 ft s 0 03 to 85 m s DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 41 Chapter 4 Specifications 4 1 5 Molecular Weight and Mass Flow Accuracy of Reading Molecular Weight hydrocarbon mixtures MW 2 to 120 g mol 1 8 optimizable for other gas compositi
5. Description 1 Upstream SIG Upstream RTN Downstream RTN alojn Downstream SIG Model GF868 Electronics Console Wiring ref dwg 702 213 sht 1 Plastic LVD Shroud 9 ALARM RELAYS 5 Pin Description 0 4 20 mA ANALOG OUTPUTS 0 4 20 mA ANALOG INPUTS TOTALIZER FREQUENCY OUTPUTS RTD INPUTS 2 1 Relay A Normally Open NO Pin Description Pin Description Pin Description Pin Description 2 Relay A Common C 1 Output A RTNG 1 Input A 24V 1 Output A Common C 1 input A SIG 3 Relay A Normally Closed NC 2 Output A SIG 2 Input A INHI 2 Output A Normally Open NO 2 Input A Common C 4 Relay B Normally Open NO 3 Output B RTNG 3 Input A INLO 3 Output B Common C 3 Input A Common C NOTE 5 Relay B Common C 4 Output B SIG 4 InputA RTN 4 Output B Normally Open NO 4 Unused One option card of each 6 Relay B Normally Closed NC 5 Output C RTNC 5 Input B 24V 5 Output C Common C 5 Input B SIG jeden WOSE ROT S 7 Relay C Normally Open NO 6 Outputc SIG 6 Input B INHI 6 Output C Normally Open NO 6 Input B Common C always installed in the same 8 Relay C Common C 7 Output D RTN 7 IputB INLO 7 Output D Common
6. 24V 5 Input B SIG 7 Relay C Normally Open NO 6 Output C SIG 6 Output C Normally Open NO 6 Input B INHI 6 Input B Common C 8 Relay C Common C 7 Output D RTN v Output D Common C r Input B INLO T Input B Common C 9 Relay C Normally Closed NC 8 Output D SIG 8 Output D Normally Open NO 8 Input B RTN 8 Unused 56 Appendix C Optional Enclosures Mounting Holes Mounting Holes 1E EFIE 4 FS 6 LT JI F8 Il JIE SCREEN 100 ajaja Handle Handle Z l Th a A s Ly ENT y gt i al OD DE E H 1 J K LL Mw ON es vez er e a E 6 o P a R ESO T 8 P ese ene leros mel C01 ETT EST v w x Y z d GF868 GF868 CHE Don 7 LCD Display Function Keys Console Keys Main Keypad Figure 16 Model GF868 Rack Mount Enclosure Front Panel Layout DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 57 Appendix D Measuring P and L Dimensions Appendix D Measuring P and L Dimensions D 1 Introduction When programming the PIPE menu of the Model GF868 s User Program the path length P and the axial dimension L must be entered These parameters are determined by measurements on the actual transducer installation with P equal to the face to face distance between the transducers and L equal to th
7. e P This symbol which is called the pointer indicates that additional option bar entries are available These options can be accessed by using the 4 and keys e A flashing asterisk indicates that the Model GF868 is currently logging information See the Programming Manual for instructions on creating a log file e SorS This symbol indicates the status of the red SHIFT key S indicates that the SHIFT key is activated for the next keystroke only while S indicates that the SHIFT key is locked See the next section for instructions on using the keypad e T This symbol indicates that the Model GF868 is currently totalizing data The middle portion of the screen pane is the prompt area This area displays data graphs and logs in measurement mode and menu prompts in programming mode In addition error code messages which are described in the Service Manual are displayed in the prompt area The lower portion of the screen pane is called the option bar The option bar displays the functions assigned to the four keys immediately below the display screen F1 F4 for the left pane and F5 F8 for the right pane Press a function key to select the function listed in the option bar immediately above it If more than four functions are available a pointer gt appears on the far right of the locator bar Press the or keys to display the additional functions on the option bar For information about o
8. 1 0 2c Wiring the Ethernet Interface A modified GF868 can use the Ethernet interface to communicate to an internal network An optional Ethernet card with a unique MAC IP address installed only in slots 5 or 6 includes an RJ45 connector To connect the Ethernet enabled GF868 to the network insert the jack of an RJ45 cable into the RJ45 connector route the cable through the bottom of the GF868 and wire the other end of the cable to the Ethernet network according to the manufacturer s instructions An external connection is required between the Ethernet option card and the GF868 s RS232 connector as shown in Table 2 Note The MAC address for a specific GF868 is included with customer documentation For more information on setting up the MAC address refer to Chapter 6 of the Programming Manual Table 2 RS232 to Ethernet Interconnections GF868 Type Terminal Block Terminal Block RS232 on TB1 on Main Board Ethernet Card Wall Mount TX Pin 1 RX Pin 2 Pin 3 RS232 on TB2 on Main Board Ethernet Card Rack Mount TX Pin 1 RX Pin 2 Pin 3 1 0 2d Wiring the MODBUS TCP Interface Customers can also use a modified GF868 that provides a MODBUS TCP interface to communicate to an internal network An optional MODBUS TCP card with a unique MAC IP address installed only in slots 5 or 6 includes an RJ45 connector To connect the MODBUS TCP enabled GF868 to the network insert the jack of an RJ45 cable into the RJ45 connec
9. 20 mA inputs A and B with 24 VDC supply for loop powered transmitters You can assign the temperature and pressure inputs to A and B as desired Note To enter programming data during meter operation you should know which input is assigned to which process parameter Enter the connections in Appendix B Data Records The analog inputs which have an impedance of 118 ohms should be connected with standard twisted pair wiring Temperature and pressure inputs require two or four wires depending on whether the GF868 will provide power to the transmitter If desired INLO and RTN can use the same wire Wire the analog input terminal block in accordance with the pin number assignments shown in Figure 9 on page 18 The analog inputs on the option card s can be calibrated with the Model GF868 s built in analog outputs However be certain that the analog outputs have been calibrated first See Chapter 1 Calibration in the Service Manual for the appropriate procedures 14 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 1 Installation 1 0 5 Wiring the Totalizer Frequency Outputs The GF868 can accommodate to 6 totalizer frequency outputs option cards Each totalizer frequency outputs option card provides four outputs A B C and D that can be used as either totalizer or frequency outputs Each totalizer frequency output requires two wires Wire this terminal block in accordance with the pin number assi
10. A LUDUM M ET 47 Appendix B Data Records 8 1 B 2 OPTICAS A o eO SEE a ele O 49 Ma SC E RENE IEEE a e b 50 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide vii Contents Appendix C Optional Enclosures ch Introduction AA tz 53 Ez Rack Mount ERCIOSULG cre EA A a dra 53 i3 a tao AA A dco S Dri eae lE A A ut heces 53 C EE AENA AEE AR id io iia 54 Appendix D Measuring P and L Dimensions D Introductions e e A c E ATE T enn a 59 D 2 Measuring P and L Distances arios ia a 59 viii DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 1 Installation Chapter 1 Installation 1 1 Introduction To ensure safe and reliable operation of the Model GF868 flowmeter for flare gas the system must be installed in accordance with the guidelines established by GE s engineers This section explains how to install the Model GF868 electronics console and make wiring connections It covers e Unpacking How to unpack the GF868 system e Selecting a suitable site for the electronics console and the flowcell transducers e Installing a flowcell Installing temperature and pressure transmitters Installing the electronics console e Wiring the electronics console WARNING THE MODEL GF868 FLOWMETER MEASURES THE FLOW OF MANY GASES SOME OF THEM POTENTIALLY HAZARDOUS WE CANNOT OVEREMPHASIZE THE IMPORTANCE OF SAFETY BE SURE TO FOLLOW ALL APPLICABLE SAFETY CODES AND REGULATIONS F
11. C Optional low temperature 364 to 248 F 220 to 120 C 4 4 5 Pressure Range 0 to 1500 psig 1 to 1 5 bar 4 44 Materials Standard Titanium Optional Monel Hastalloy and 316 stainless steel 4 4 5 Connections Cable Length Up to 1000 ft 300 m Housing Options Explosion proof Type 7 Class I Group C amp D Division I Weatherproof Type 4X IP65 Flameproof Ex II 2 G EEx d II C T6 4 4 6 Mounting and Installation Mechanical insertion mechanism rated to 500 F and 500 psig DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 45 Chapter 4 Specifications 4 5 Flowcell Specifications 4 5 1 Spoolpiece Prefabricated spools complete with transducer mechanism port Pipe sizes 3 to 120 in Process Connections Plain end 150 300 or 600 lb RF flanged Materials carbon steel low carbon steel stainless steel or other 4 5 2 Hot Cold Tap Mechanisms installed via hot or cold tap Full installation jigs fittings and documentation provided Process Connections NA 4 5 3 Preamplifier with Explosion proof Housing Operating Temperature 40 to 140 40 to 60 C 46 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Appendix A CE Mark Compliance Appendix A CE Mark Compliance A 1 Introduction For CE Mark compliance the Model GF868 flowmeter must be wired in accordance with the instructions in this appendix IMPORTANT CE Ma
12. C 7 Input B Common C slots used for this example 9 Relay C Normally Closed NC 8 Output D SIG 8 mputB RTN 8 Output D Normally Open NO 8 Unused DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 18 Chapter 1 Installation FLYING LEAD TO BNC COAX CABLES gt UP TO 1000 FEET SUPPLIED BY GE EEES DUAL PREAMPLIFIER PREAMPLIFIER XA TRANSDUCER REF ONLY p FLOW COAXIAL CABLES BNC TO BNC SUPPLIED BY GE 10 FOOT TRANSDUCER REF ONLY PIPE REF ONLY PREAMPLIFIER CAUTION As part of maintaining the FM CSA environmental rating NEMA TYPE 4 on the remote preamplifier thread sealant is required on all conduit entries TRANSDUCER REF ONLY FLYING LEAD TO BNC COAX CABLES UP TO 1000 FEET SUPPLIED BY GE SINGLE PREAMPLIFIER COAXIAL CABLES BNC TO BNC TRANSDUCER REF ONLY PIPE REF ONLY SUPPLIED BY GE 10 FOOT PREAMPLIFIER WIRING DETAIL PRESSURE AND TEMPERATURE INPUTS USING EXTERNAL 24VDC SUPPLY REFERENCE ONLY 24VDC POWER SUPPLY E PRESSURE TRANSMITTER PRESSURE INPUT REFERENCE ONLY GF868 PINE im 1 2ave E SENSOR 2 am ouT 3 IN 4 ave TEMPERATURE TRANSMITTER TEMPERATURE INPUT REFERENCE ONLY GFac8 PNF an 5 nv SENSOR 6 IN2 OUT 7 4v i eae 8 vp WIRING DETAIL PRESS
13. Connection E DN Downstream XDCR 8 CTS Clear to Send 5 N Covered Option Card Slot 9 No Connection 3 S N 2 0 4 20 mA ANALOG OUTPUTS POWER INPUT E Pin Description Item Description 1 S OPTION CARDS 1 Output A SIG apnd di aes ns 1 ON OFF Switch E 2 Output A RTN 2 Earth Ground 3 o 3 Output B SIG 3 Power Cord 5 4 Output B RTN 9 4 Fuse E oy 3 Cr mei m rs REAR VIEW DC OPTION wooc Bes NOTE SC He n L e eo One option card of each ud js EEE ERENG LJ E available type is shown in this aN 5 diagram These cards are not always installed in the same Fa Y 2 slots used for this example N d D 2 S o ALARM RELAYS K 2 Pin Description 0 4 20 mA ANALOG OUTPUTS TOTALIZER FREQUENCY OUTPUTS 0 4 20 mA ANALOG INPUTS RTD INPUTS ir 1 Relay A Normally Open NO Pin Description Pin Description Pin Description Pin Description 2 Relay A Common C 1 Output A RTN 1 Output A Common C 1 Input A 24V 1 Input A SIG 3 Relay A Normally Closed NC 2 Output A SIG 2 Output A Normally Open NO 2 Input A INHI 2 Input A Common C 4 Relay B Normally Open NO 3 Output B RTN 3 Output B Common C 3 Input A INLO 3 Input A Common C 5 Relay B Common C 4 Output B SIG 4 Output B Normally Open NO 4 Input A RTN 4 Unused 6 Relay B Normally Closed NC 5 Output C RTN 5 Output C Common C 5 Input B
14. F1 AVE Channel 1 Channel 2 2 The following screen appears after selection of the channel mode display option for a 2 channel Model GF868 or immediately after the internal checks for a 1 channel Model GF868 Chi label CUA d Use the F1 F4 4 and keys to select the desired display parameter option Ch1 Velocity Ft s See Table 8 on page 38 for a complete description of the available options 6 95 error codes appear here VEL zum EE Ee Note Chl or Ch2 which is shown in parentheses above appears only with a 2 Channel Model GFS amp 68 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 37 Chapter 3 Operation 3 4 Taking Measurements cont Table 8 Measurement Parameter Options Option Bar Choice F1 VEL Flow Velocity F2 VOLUM Volumetric Flow F3 TOTL Forward Totalized Volume Flow F4 TOTL Reverse Totalized Volume Flow D F1 TIME Total Flow Measurement Time F2 MDOT Mass Flow D F3 MASS Forward Totalized Mass Flow F4 MASS Reverse Totalized Mass Flow OD F1 DIAG Diagnostic Available only if Mass Flow static YES By following the instructions in this section the Model GF868 can be set up to display the desired channel option for a 2 Channel meter and the desired measurement parameter To utilize the more advanced display capabilities of the Model GF868
15. Records Appendix B Data Records B 1 Option Cards Installed Whenever an option card is installed in one of the Model GF868 s expansion slots record the type of card and any additional setup information in the appropriate row of Table 11 Table 11 Option Cards Installed Type of Option Card Additional Setup Information Analog Outputs A B DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 49 Appendix B Data Records B 2 Initial Setup Data After the Model GF868 flowmeter has been installed some initial setup data must be entered via the User Program prior to operation Record that information in Table 12 50 Model Table 12 Data Information Sheet General Information Reference Software Vers Date Serial Measurement Method 1 Channel ACTIV Z Dimension Measurement Method 2 Channel ACTIV Channel 1 Channel 2 Channel Status Off Channel Status Off Measure Mode Skan 1 Channel Measure Mode Skan System Parameters SYSTEM 2 Channel Site Label Chan 1 Label Site Message Chan 1 Message System Units English Metric Chan 2 Label Pressure Units Chan 2 Message Stopwatch Total Auto Manual 1 Channel and 2 Channel Channel 1 Channel 2 if applicable Vol Units Vol Units Vol Time Units Vol Time Units Vol D
16. User Program screen press the F2 function key to program the SYSTM submenu 2 Enter a Site Label of up to 9 characters and press ENT While taking measurements the site label will appear on the locator bar 3 Enter a Site Message of up to 21 characters Press ENT 4 To select the System Units press F1 to display parameters and measurements in English units or press F2 to display parameters and measurements in Metric units 5 Use the F1 F4 keys to select the type of Pressure Units desired The abbreviations and definitions of all the available pressure units are shown in Table 2 1 below The choices shown on the option bar are determined by the selections made at the previous SYSTEM UNITS prompt Table 3 Available Pressure Units PSla Pounds per square inch absolute BARa bar absolute PSIg Pounds per square inch gage BARg bar gage kPaa kiloPascals absolute kPag kiloPascals gage a If you have entered gage pressure or the local atmospheric pressure PSIg BARg or kPag use the numeric keys to enter the gage pressure value Press ENT 6 6 Atthe Stopwatch Totalizer prompt press F1 to totalize all liquid flow continuously or F2 to measure totals manually with the Stopwatch Timer With MNUAL F2 the console key on the keypad is used to start and stop the totalizer See the Programming Manual for details The remainder of the SYSTM submenu is identical for the 1 Channel and 2 Channel
17. a fuse item 4 of the proper size and type is installed b Connect the female end of the line cord provided to the power input receptacle item 3 c Connect the earth ground screw terminal item 2 to a ground point on the rack 2 Wire the transducers as follows a Connect the pair of cables supplied with the meter to the Channel I upstream and downstream BNC transducer connectors on the left side of the rear panel b For a 2 Channel meter repeat the above step for the Channel 2 transducer connectors if the second channel is to be used c Complete the transducer wiring in accordance with the instructions in Chapter 1 Installation of this manual DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 53 Appendix C Optional Enclosures C 3 Rack Mount Wiring cont 3 Wire the 0 4 20 mA analog outputs at the left side of the rear panel in accordance with the instructions in Chapter 1 Installation of this manual 4 Wire the RS232 serial port by completing the following steps a Purchase or prepare a suitable serial cable This cable should have a standard female DB9 connector wired as shown in Figure 15 on page 56 for connection to the rear panel of the Model GF868 The other end should be as required for the external device b Complete the serial port wiring in accordance with the instructions in Chapter 1 Installation of this manual 5 Wire any installed option cards using the same procedur
18. but an optional RS485 interface is available upon request Proceed to the appropriate sub section for wiring instructions For more information on serial communications refer to the EJA RS Serial Communications Manual 916 054 8 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 1 Installation 1 0 2a Wiring the RS232 Interface The RS232 communications port provides a serial interface in order to connect the GF868 to a printer an ANSI terminal or a personal computer The RS232 serial interface is wired as Data Terminal Equipment DTE and the signals available at the GF868 RS232 terminal block are shown in Table 1 1 below Refer to Figure 9 on page 18 to locate terminal block RS232 and complete the following steps to wire the terminal 1 Use the information in Table 1 to construct a suitable cable for connecting the GF868 to the external device If desired an appropriate cable may be purchased from the factory 1 0 2a Wiring the RS232 Interface cont Table 1 RS232 Connection to DCE or DTE Device DCEDB25 DTEDB25 DTEDB9 Signal Description Pin Pin Pin AC L3 Di 2 TX Transmit 3 3 RX Receive DTR Data Terminal Ready 2 Wire the flying leads end of the cable to terminal block RS232 and connect the other end of the cable to the printer ANSI terminal or personal computer After the wiring has been completed consult the User s Manual for the external device to config
19. follows WARNING Improper connection of the line power leads or connecting the meter to the incorrect line voltage will damage the unit It will also result in hazardous voltages at the flowcell and associated piping and within the electronics console 6 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 1 Installation 1 0 0 Wiring the Line Power cont 1 Remove the plastic shroud that covers the terminal blocks Be sure to reinstall the shroud after all of the wiring has been completed 2 Strip 4 of insulation from the end of the power and neutral or line leads or the positive and negative DC power leads and 1 2 from the end of the ground lead 3 Connect the ground lead to the internal ground connection located on the side panel of the enclosure see Figure 3 below IMPORTANT The incoming ground lead must be connected to the internal ground connection 4 Connect the neutral or line lead or the negative DC power lead to TB1 2 and the line power lead or the positive DC power lead to TB1 3 as shown in Figure 3 below IMPORTANT Do not remove the existing PC board ground wire or the cover ground wire PC Board Ground Wire Cover Ground Wire Internal Ground Connection ya G DC G N L2 L1 AC TB AC Line Power orDC AC Neutral Line or DC
20. in Appendix C Refer to Figure 8 on page 17 for standard enclosure mounting dimensions For meters housed in one of the optional enclosures a dimensional drawing will be shipped with the unit WARNING Proper grounding of the GF868 chassis is required to prevent the possibility of electric shock See Figure 9 on page 18 to locate the internal ground connection DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 5 Chapter 1 Installation 1 6 Making Electrical Connections ATTENTION EUROPEAN CUSTOMERS To meet CE Mark requirements all cables must be installed as described in Appendix A CE Mark Compliance This section contains instructions for making all the necessary electrical connections to the Model GF868 flowmeter See Figure 9 on page 18 for a complete wiring diagram WARNING RACK MOUNT CUSTOMERS Refer to Appendix C for a wiring diagram and installation information for your unit Except for the power connector all terminal blocks are stored in their terminal blocks during shipment and are removable for more convenient wiring Feed all cables through the conduit holes on the bottom of the enclosure attach the wires to the appropriate connectors and plug the connectors back into their terminal blocks WARNING To ensure the safe operation of the Model GF868 you must install and operate it as described in this manual In addition be sure to follow all applicable safety codes and regulations for installing e
21. in two types e general purpose hermetically sealed for Class I Division 2 hazardous areas Chapter 4 Specifications lists the maximum electrical ratings for the relays Each alarm relay can be wired as Normally Open NO or Normally Closed NC In setting up an alarm relay it may be wired for either conventional or fail safe operation In fail safe mode the alarm relay is constantly energized except when it is triggered or a power failure or other interruption occurs See Figure 6 for the operation of a NO alarm relay in both conventional and fail safe mode Connect the two alarm wires required for each relay in accordance with the pin number assignments shown in Figure 9 on page 18 Conventional not triggered RA Monitoring Device Conventional triggered FP gt NO Alarm Monitoring Device Fail Safe not triggered PL Monitoring Device Fail Safe triggered or power failure er Nol c Alarm Monitoring Device Figure 6 Conventional and Fail Safe Operation DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 13 Chapter 1 Installation 1 0 4 Wiring a 0 4 20 mA Analog Inputs Option Card To calculate standard volumetric flow and mass flow of Flare Gas the GF868 must have temperature and pressure data from the measurement site Transmitters installed in the flowcell send this information to the analog input card This card provides two isolated 4
22. neos v ux be oe EVA 42 Molecular Weight 3 ovzwbS a9 Dx RM 42 Operational oa pl e ada ad 44 A la ek eae MAE eens 41 Rangeability 24155 Apu joa 42 Repeatability n seene is De 42 Transducer Flowcell 252 15 edo testi SERO 45 Standard QUEpulsua eyes ad 43 62 S cont Storage Temperature o cuba acres ads 41 Symbols Locator Bibi ia 36 SYSTM Submenu S P i be 24 for I Channel Meter 52i 544555 eae er 24 for 2 Channel Meter 2000 000 25 T Temperature Range ioco dv ox as EE 45 Terminal Block Serial Port R8232 oes css a 8 Totalizer Frequency Output Options 44 Transducer Connections ed v ke NER 45 Transducer Materials 25s xs ex TR SE ER 45 Transducer Mounting and Installation 45 Transducer Number Entering seus 27 Transducer Type iia BRE X 45 Transducer Flowcell Specifications 45 Transducers 180 Installation x scs x REX WEE RS aes 59 Axial Dimension A gE dele Send 59 Bias 90 Installation 24A Rr ym 39 Installation Angle oo ooooooomoomo 59 A AA Posi T Bocce eee 59 W MOOECAHDY S A CRUS RC RENI 65 WEEE Directive 05e fin ope tae ERES iv Wiring CE Mark Compliance as 47 Foundation Fieldbus voices 12 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Warranty Warranty Each instrument manufactured by GE Sensing is warranted to be free from defects in material and workmanship Liability under t
23. of Pounds TONS Tons Tonnes Metric Tons 7 Use the F1 F4 keys to select the Mass Flow Time units 8 Use the F1 F4 keys to select the MDOT DECIMAL DIGITS the number of digits to the right of the decimal point for displaying mass flow 9 Use the F1 F4 keys to select the Mass Totalizer units listed in Table 2 3 above 10 Use the F1 F4 to specify the Mass Decimal Digits the number of digits to the right of the decimal point for displaying totalized mass flow The meter returns to the initial User or Channel Program screen Proceed directly to the next section to program the PIPE submenu 26 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 2 Initial Setup 2 6 Entering Pipe Data The PIPE submenu permits entry of the transducer and pipe specifications To program this menu complete the following steps 1 At the User or Channel Program screen press F3 to program the PIPE submenu 2 6 1 Transducer Number 2 Enter the Transducer Number normally engraved on the head of the transducer Press ENT If there is no engraved number complete the steps below Otherwise proceed to step 3 IMPORTANT Special transducers which have no engraved number on the head are rarely used Examine the transducer head carefully for a number a Assign a number between 91 and 99 to the Special Transducer and press ENT The meter will only accept values from 1 to 199
24. ultrasonic signal locate the transducers on the side of a horizontal pipe where possible If limited pipe access necessitates top mounted transducers and the sound beam path includes a reflection shift the transducers to at least 10 off top center This will minimize the influence of any sediment on the reflected ultrasonic signals 1 2 4 Cable Lengths Locate the transducers as close as possible to the electronics console The factory can supply transducer cables up to 500 ft 153 m in length For longer distances consult the factory 2 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 1 Installation 1 2 5 Temperature and Pressure Transmitters When installing temperature and pressure transmitters locate them downstream of the flowmeter transducers These transmitters should be positioned no closer to the flowmeter transducers than 2 pipe diameters and no further away from the transducers than 20 pipe diameters 1 2 6 Transducer Cables When installing the transducer cables always observe established standard practices for the installation of electrical cables Specifically do not route transducer cables alongside high amperage AC power cables or any other cables that could cause electrical interference Also protect the cables and connections from the weather and corrosive atmospheres Note If you are using your own cabling to connect the transducers to the electronics console the cabling must hav
25. 2 Initial Setup 2 6 3 Pipe Wall 4 Use the numeric keys to enter the known thickness of the Pipe Wall Press ENT If the pipe wall thickness is not available look up the value in a table of standard pipe size data or use the Model GF868 s on line Help Menu see the Programming Manual for details 2 6 4 Path Length 5 Press F1 inch or F2 feet to select the units Then enter the Path Length P of the ultrasonic signal Press ENT The meter will only accept values from 1 8 to 900 in Note The factory has calculated both the transducer signal path length P and the transducer signal axial length L based on the exact transducer configuration used for the application These values are engraved on the flowcell and or are included in the documentation supplied with the meter 2 6 5 Axial Length 6 Press F1 inch or F2 feet to select the units Then enter the Axial Length L of the ultrasonic signal and press ENT Note The factory has calculated both the transducer signal path length P and the transducer signal axial length L based on the exact transducer configuration used for the application These values are engraved on the flowcell and or are included in the documentation supplied with the meter 2 6 6 Reynolds Correction 7 Press F1 to turn Reynolds Correction off or F2 to turn it on Note Reynolds Correction is a number based on the Kinematic Viscosity and flow rate of the fluid It shoul
26. Auxiliary Equipment Local Safety Standards The user must make sure that he operates all auxiliary equipment in accordance with local codes standards regulations or laws applicable to safety Working Area WARNING Auxiliary equipment may have both manual and automatic modes of operation As equipment can move suddenly and without warning do not enter the work cell of this equipment during automatic operation and do not enter the work envelope of this equipment during manual operation If you do serious injury can result WARNING Make sure that power to the auxiliary equipment is turned OFF and locked out before you perform maintenance procedures on the equipment Qualification of Personnel Make sure that all personnel have manufacturer approved training applicable to the auxiliary equipment Personal Safety Equipment Make sure that operators and maintenance personnel have all safety equipment applicable to the auxiliary equipment Examples include safety glasses protective headgear safety shoes etc Unauthorized Operation Make sure that unauthorized personnel cannot gain access to the operation of the equipment DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide iii Preface Environmental Compliance Waste Electrical and Electronic Equipment WEEE Directive GE Measurement amp Control Solutions is an active participant in Europe s Waste Electrical and Electronic Equipment WEEE take back in
27. ER INPUT 12 28 VDC OR 100 or 120 VAC OR 220 or 240 VAC Pin 4 Description Pin Description Pin Description 1 G Earth Ground 1 G Earth Ground 1 G Earth Ground 2 Negative 2 N Line Neutral 2 L2 Line Power 3 Positive 3 L1 Line Power 3 L1 Line Power NOTE For compliance with the European Union s Low Voltage Directive 73 23 EEC a transparent plastic shroud protects the electrical connections The shroud must remain in place except while wiring the unit Reinstall the shroud after the wiring has been completed PC Board Ground Wire Cover Ground Wire Internal Ground Connection CH2 TRANSDUCER Pin Description 1 Upstream SIG tek EF x e is e wide IF le m Pas su AO PTET PTET PTET Upstream RTN Downstream RTN ajojn Downstream SIG 0 4 20 mA ANALOG OUTPUTS Pin Description 1 Output A SIG Output A RTN Output B SIG ajojn Output B RTN Test Points CH1 TRANSDUCER Pin
28. F Actual Cubic Feet ACM Actual Cubic Meters KACF Thousands of ACF KACM Thousands of ACM MMACF Millions of ACF MMACM Millions of ACM Standard Units SCF Standard Cubic Feet SCM Standard Cubic Meters KSCF Thousands of SCF KSCM Thousands of SCM MMSCF Millions of SCF MMSCM Millions of SCM 2 Use the F1 F4 keys to select the Volumetric Time units for the volumetric flow rate display 3 Use the F1 F4 keys to select the Vol Decimal Digits the desired number of digits to the right of the decimal point in the volumetric flow rate display DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 25 Chapter 2 Initial Setup 2 5 3 1 and 2 Channel Meters cont 4 Use the F1 F4 and gt keys to select the Totalizer Units The abbreviations and definitions of all the available volumetric and totalizer units are shown in Table 2 2 on the previous page The choices shown on the option bar in the prompt screen above are determined by the selection made at the previous SYSTEM UNITS prompt screen 5 Use the F1 F4 keys to select the Total Decimal Digits the desired number of digits to the right of the decimal point in the totalized flow display 6 Use the F1 F4 keys to select the Mass Flow units listed in Table 5 Table 5 Available Mass Flow Units English Mass Flow Units Metric Mass Flow Units LB Pounds KG Kilograms KLB Thousands of Pounds MMLB Millions
29. GE Measurement amp Control Solutions Gas Analysis DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 1 and 2 Channel gt k 910 194U Rev E Imagination at wor March 2011 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 1 and 2 Channel 910 194U Rev E March 2011 WWW ge mcs com 2011 General Electric Company All rights reserved Technical content subject to change without notice no content intended for this page Preface Information Paragraphs Note paragraphs provide information that provides a deeper understanding of the situation but is not essential to the proper completion of the instructions Important paragraphs provide information that emphasizes instructions that are essential to proper setup of the equipment Failure to follow these instructions carefully may cause unreliable performance Caution paragraphs provide information that alerts the operator to a hazardous situation that can cause damage to property or equipment e Warning paragraphs provide information that alerts the operator to a hazardous situation that can cause injury to personnel Cautionary information is also included when applicable Safety Issues WARNING Itis the responsibility of the user to make sure all local county state and national codes regulations rules and laws related to safety and safe operating conditions are met for each installation
30. L2 eR be Arta d 24 poco e AN e ed RR RR P LERRA 25 2 5 5 kand C halbe dV BE Br SC cess Pasteur O een EE opto M rA E vU 25 2167 ENS Pipe Datar aces e rag terat et t p aoc t ptas fpe rato A RE et ctis 27 eX Transducer NUNIBSE Codec no ducissa Dua a A LR Lec lente Leine 27 25 2 OAO osse he er Net elut CN S EE O a Nae ca tel A 27 A A ER E A EEE EEE E TA EE TS AS AAN 28 2 Ge Pat A IA ad Aree foe A RA O 28 ZOS la E A En O ELDER 28 2 5 6 Revholds CONEA id e aid e de es Pe ers e das 28 Chapter 3 Operation CURRED gyn colo etude se duce ds e a A 33 5 25 RON U OER NES eA e OR Me E a eT OT eee E M i AM MRE ITA qM ne o VL 34 x5 TWIG the Display coser onu pU s eed t udo foe teu ek oe he Rr Ea a Onset ON 55 su Tama MOC SURE mes AS eb aai A ee Lucret weal ae US 37 3 4 1 Foundation Fieldbus COMICIOS inh oan iro eit i ed ance eid nca 38 vi DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Contents Chapter 4 Specifications 4 1 4 2 4 3 4 4 4 5 GenerobspeciiCOUONSe P EE 41 2 IT ROFOWOIEeS OTIO l q IO OOO O oda e bt ser petet Sea e ues exque T 41 S32 Environmental eed dct scat titt e hltrias O besoin A e ard rdi Ecl 41 41 3 Flow ecardey ia Or Regale o dame mind at bees 41 T A RONGE Se c sheet het Oe a NE cei eter etc nh e aer c pep 4 4 1 5 Molecular Weight and Mass Flow Accuracy 96 of Reading 0 cece eee eee ent e sees 42 AAG RalOesbilib cos orba ier oae ates teat tees tel Meal Mae elt oa A abu Gr ce
31. OR INSTALLING ELECTRICAL EQUIPMENT IN YOUR AREA AND WHEN WORKING WITH PARTICULARLY HAZARDOUS GASES OR FLOW CONDITIONS CONSULT YOUR COMPANY SAFETY PERSONNEL OR LOCAL SAFETY AUTHORITIES IF YOU ARE UNSURE ABOUT THE SAFETY OF ANY PROCEDURE OR PRACTICE ATTENTION EUROPEAN CUSTOMERS In order to meet CE Mark requirements all wiring connections must be made in accordance with the instructions in Appendix A CE Mark Compliance 1 1 Unpacking Remove the electronics console transducers and cables from the shipping containers Check all packing material before discarding it to account for all parts and documentation listed on the packing slip If anything is missing or damaged contact the factory immediately for assistance DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 1 Chapter 1 Installation 1 2 Site Considerations Since the relative physical locations of the flowcell s and the GF868 electronics are important use the guidelines given in this section when planning your GF868 system installation 1 2 1 Electronics Console Location Normally the GF868 electronics enclosure is a Type 4X weather resistant dust tight indoor outdoor type Other enclosure options are described in Appendix C Typically the electronics console is mounted in a meter shed If it is not select a location that allows you access to your meter for programming testing and servicing Note For compliance with the European Union s Low V
32. URE AND TEMPERATURE INPUTS USING INTERNAL 24VDC SUPPLY PRESSURE INPUT SOFTWARE ASSIGNED PRESSURE TRANSMITTER GF868 REFERENCE ONLY PINE 1 MVe IN 2 Ni SENSOR 3 IM ouT 4 w NL JUMPER WIRE NOT SUPPLIED TEMPERATURE INPUT SOFTWARE ASSIGNED TEMPERATURE TRANSMITTER GF868 REFERENCE ONLY PINE 55 24V IN 6 IN2 SENSOR 7 IN2 ouT 8 2v JUMPER WIRE NOT SUPPLIED Figure 10 Model GS868 Transducer Wiring ref dwg 702 213 sht 2 of 2 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 19 Chapter 2 Initial Setup Chapter 2 Initial Setup 2 1 Introduction This chapter provides instructions for entering the minimum amount of programming data required to place the GF868 flowmeter into operation Before your GF868 can begin taking measurements you must enter the necessary information into the SYSTM and PIPE submenus In addition a 2 Channel meter requires activation of each channel prior to use The other submenus within the Program Menu enable you to access all the GF868 features however this information is not necessary to begin taking measurements Note See the Programming Manual for information on those User Program options not covered in this chapter 2 2 Navigating Through the User Program To begin using the GF868 you must access three submenus within the User Program e ACTIV en
33. ables you to select a measurement method e SYSTM prompts you to enter the required system information e PIPE lets you enter the necessary pipe data As a guide in following the programming instructions in this chapter the relevant portions of the GF868 menu map appear in Figure 11 on page 31 Note There are minor differences at the start of the ACTIV and SYSTM submenus for the 1 Channel and 2 Channel models but the PIPE submenus are identical The following discussion assumes that the left screen is active If the right screen is active only the function key designations change F1 becomes F5 etc Be sure to record all programming data in Appendix B Data Records Use the keypad as described in the Programming Manual to navigate through the User Program The menu map may be followed in sequence or the f and keys may be used to scroll through the prompt screens The 4 key may be used to delete the last alphanumeric character that was entered from the keypad DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 21 Chapter 2 Initial Setup 2 3 Accessing the User Program To enter the Program Menu press the PROG key on the keypad Note Note If the security feature is active the GF868 will prompt you for a password Enter the password and press ENT See the SECUR submenu section in Chapter 1 Programming Site Data of the Programming Manual for more information on the security featur
34. ates are in conformity with the following standards e EN 60079 0 2007 EN 60079 1 2004 EN50281 1 1 1998 2 G EEx d IIC T6 ISSEPOZATEX113 ISSeP B7340 Colfontaine Belgium NoBo 492 N 61326 1 2006 Class A Table 2 Industrial Locations e EN 61326 2 3 2006 EN 61010 1 2001 Overvoltage Category II Pollution Degree 2 m Other standards Used e EN 50014 1997 A1 A2 e EN 50018 2000 A1 following the provisions of the 2004 108 EC EMC 2006 95 EC Low Voltage and 94 9 EC ATEX Directives Where products were initially assessed for compliance with the Essential Health and Safety Requirements of the ATEX Directive 94 9 EC using earlier harmonized standards a subsequent review has determined that technical knowledge is unaffected by the current harmonized standards listed above The unit listed above and any ancillary equipment supplied with it do not bear CE marking for the Pressure Equipment Directive as they are supplied in accordance with Article 3 Section 3 sound engineering practices and codes of good workmanship of the Pressure Equipment Directive 97 23 EC for DN 25 A 4 Peas feynd i Billerica August 2010 Issued Mr Gary Kozinski Certification amp Standards Lead Engineer mAN C TV Customer Support Centers U S A The Boston Center 1100 Technology Park Drive Billerica MA 01821 U S A Tel 800 833 9438 toll free 978 437 1000 E mail sensing ge com Ireland Sensing Hou
35. b Use the gt and F1 F4 keys to select the Frequency of the special transducer The meter can not transmit an excitation voltage at the transducer s natural frequency without this data c Enter the special transducer Time Delay Tw value supplied by the factory Press ENT The meter will only accept values from 0 to 1000 usec Note Tw is the time required for the transducer signal to travel through the transducer and its cable This time delay must be subtracted from the transit times of the upstream and downstream transducers to ensure an accurate measurement 2 6 2 Pipe OD 3 Enter the known Pipe OD or circumference and use the F1 F4 keys to select the appropriate units Press ENT The meter will only accept values from 1 8 to 648 in The option bar choices may appear in English or Metric units Obtain the required information by measuring either the pipe outside diameter OD or circumference at the transducer installation site The data may also be obtained from standard pipe size tables Table 6 lists the available English and metric OD units Table 6 Available Pipe OD Units inch pipe OD in inches mm pipe OD in millimeters feet pipe OD in feet m pipe OD in meters in Pl pipe circumference in inches mm PI pipe circumference in millimeters ft Pl pipe circumference in feet m PI pipe circumference in meters DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 27 Chapter
36. combining the first equation above with the second equation below see Figure 17 on page 60 P CL 1 2 Standard GE 90 transducers have the face offset from the centerline of the body by 0 6 inches Thus a pair of transducers has a total offset of 1 2 inches as indicated in the second equation For example suppose that the transducer installation angle is 30 and CL is measured to be 12 00 inches Then P 12 00 1 2 10 80 inches and L 10 80 x 0 866 9 35 inches DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 59 Appendix D Measuring P and L Dimensions Pipe Thickness 180 Installation Bias 90 Installation Figure 17 Top View of Transducer Installations 60 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide A Abbreviations Volumetric amp Totalizer Units 25 ACTIV Submenu peinar a 23 Alarm Options ves UE eo ET Rus Sears 44 Analog Inputs Option Card Ratings soak eh SA E FRAN DE MER dd 43 Axial DIMENSION veo eos xp ret ASTE BOX AR 59 C CE Mark Compliance s s pr T re ARRAS 47 Configuration Hardware oooooooooooo 41 D Data Logging sg pet saa NAE ew ae Mee x 44 Date of Publication od s ere te eva e Met as cs i Digital Interfaces for GF868 o oooooo 43 Display Channel Mode Options o oo oooooo o 37 Components necese su de ir 35 A A A Eee 34 Locator Barca da ed he e 35 Locator Ba
37. d be enabled for most applications a When you enable the Reynolds Correction Factor you must also enter the Kinematic Viscosity of your gas as listed in Sound Speeds and Pipe Size Data Use the numeric keys to enter a value and press ENT 8 Enter a value for the flow Calibration Factor and press ENT The default value is 1 00 The meter will only accept values from 0 5000 to 2 0000 28 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 2 Initial Setup 2 66a Further Options After completing the above steps the meter returns to the User or Channel PROGRAM prompt Continue as follows e To continue programming the meter refer to the menu maps in Appendix A of the Programming Manual and navigate to the desired menu Then proceed to the appropriate section of the manual for instructions e To leave the User Program and retain the previous settings press EXIT once for a 1 channel GF868 or twice for a 2 channel GF868 and then press F1 NO at the SAVE prompt Any programming changes will be discarded and you will be returned to the data display e To leave the User Program and return to measurement mode press EXIT once for a 1 channel GF868 or twice for a 2 channel GF868 and then press F2 YES at the SAVE prompt Your programming changes will be entered into the meter s memory and you will be returned to the data display Note See the Programming Manual for instructions on u
38. e 2 3 1 1 Channel Meter For a 1 Channel Model GF868 the measurement mode screen is replaced by the following initial programming mode screen SEU At the User Program screen shown press the F1 function key and proceed to Activating a Channel on the next page Rana SA E INS 2 3 2 2 Channel Meter For a 2 Channel Model GF868 the following two step sequence is required to reach the initial programming screen cul di Press F1 or F2 to select the submenu for Channel 1 or Channel 2 respectively from the option bar PROGR Scil At the User Program screen shown press the F1 function key and proceed to Activating a Channel on the next page Rana San E IO Only the submenus ACTIV SYSTM and PIPE are discussed in this manual Refer to the Programming Manual for information on the other submenus Note In this manual only the programming of Channel 1 will be described To program Channel 2 simply repeat the same procedures presented for Channel 1 22 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 2 Initial Setup 2 4 Activating a Channel The ACTIV submenu permits selection of the desired measurement method In addition it is used to activate deactivate one or both of the channels in a 2 Channel Model GF868 2 4 1 1 Channel Meter 1 Enterthe ACTIV submenu by pressing F1 at the User PROGRAM prompt 2 Press F1 to activate the channel in BURST mode 2 4 2 2 Cha
39. e Chapter 1 Installation 14 Installing Temperature and Pressure Transmitters Temperature and pressure transmitters may be installed as part of the flowcell near the ultrasonic transducer ports Be sure to observe the siting requirements mentioned earlier These transmitters must use a 0 4 to 20 mA signal to transmit temperature and pressure values to the GF868 console The console in turn provides 24 VDC power to the transmitter You can use any desired transmitters or sensors however they must have an accuracy of 0 5 of the reading or better Note Resistive Thermal Devices RTDs are typically used to measure temperature Typically a 1 2 or 3 4 NPT female threaded port is used to mount the transmitters on the flowcell If the pipeline is insulated you may need to extend the coupling to provide convenient access Of course you may also use other types of mounting ports including flanged ports for the transmitters The 4 to 20 mA transmitters typically mount directly into the ports as shown in Figure 2 The temperature sensor should protrude 1 4 to 1 2 way into the pipe Temperature Transmitter Pressure Transmitter 1l iu s po Isolation Valve Thermowell Coupling Flowcell Wall Figure 2 Typical Temperature Pressure Transmitter Mounting 1 5 Mounting the GF868 Enclosure The standard GF868 is housed in a Type 4X weather resistant enclosure Other enclosure options are available and are discussed
40. e electrical characteristics identical to the cable supplied by GE Cable must be type RG 62 A U coaxial cable 93 2 and each cable must be the same length within 4 in 1 3 Installing a Flowcell A flowcell is the section of pipe where the transducers are mounted It can be created either by mounting the transducers on the existing pipeline or on a spoolpiece A spoolpiece is a separately manufactured pipe section matched to the existing pipe which contains ports for mounting the transducers This approach allows the transducers to be aligned and calibrated before mounting the spoolpiece into the pipeline Figure 1 on page 4 shows a block diagram of a typical Model GF868 system including optional pressure and temperature transmitters For detailed instructions on installing the transducers and or spoolpiece refer to the supplied drawings and the GE Transducer Installation Guide CAUTION The manual insertion mechanism systems are for low pressure applications 80 psig 5 5 bar or less Use the appropriate safety precautions when inserting or withdrawing the insertion mechanism DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 3 Chapter 1 Installation 13 Installing a Flowcell cont Temperature Transmitter Pressure Transmitter Transducer Flowcell Transducer Electronics Console Figure 1 Model GF868 Flowmeter System 4 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guid
41. e axial distance between the centers of the transducer faces The accuracy of the programmed P and L values is critical to precise flow rate measurements If GE supplies the flowcell for the system the correct values will be included in the documentation supplied with the unit For transducers installed on an existing pipe see Figure 17 on page 60 P and L must be measured at the site This appendix provides instructions for properly determining these dimensions D 2 Measuring P and L Distances Whenever possible physically measure the face to face distance P and the axial distance L between the centers of the flat faces of the transducers Refer to Figure 17 on page 60 for an illustration of the proper distances to measure in a typical installation In some situations only one of the required distances can be directly measured When this happens a knowledge of the installation angle 0 of the transducers permits the second distance to be calculated from the equation below cos0 L P As an example assume that the transducer installation angle is known to be 45 and the L distance is measured to be 10 00 inches Then the P distance is calculated to be P 10 00 0 707 14 14 inches With a Bias 90 transducer installation it sometimes happens that the only known parameters are the transducer angle 0 and the centerline distance between the transducer bodies CL In these cases it is still possible to calculate both P and L by
42. ec Digits Vol Dec Digits Totalizer Units Totalizer Units Tot Dec Digits Tot Dec Digits Mass Flow Mass Flow Mass Flow Time Mass Flow Time MDOT Dec Dig MDOT Dec Dig Mass Totalizer Mass Totalizer Mass Dec Dig Mass Dec Dig DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Appendix B Data Records Table 12 Data Information Sheet cont Pipe Transducer Parameters PIPE Channel 1 Channel 2 if applicable Std Trans Std Trans Spec Trans Spec Trans Spec Trans Hz Spec Trans Hz Spec Trans Tw Spec Trans Tw Pipe Transducer Parameters cont PIPE Channel 1 cont Channel 2 cont Pipe O D Pipe O D Pipe Wall Pipe Wall Path Length P Path Length P Axial Length L Axial Length L Multi K factors Off Multi K factors Off On Edit Table No Edit Table No Yes K factor Table K factor Table K Factor Velocity K Factor K Factor Velocity K Factor 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 ER N N 99 99 A Ra A CA CA ON ON ji oo oo NO NO N N DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 51 52 no content intended
43. ed Form C relays 4 5 Operational Specifications 4 3 1 Flow Computer Built in Programmable from the keypad Calculates velocity instantaneous average molecular weight mass flow rate and other flow parameters in real time while simultaneously handling other activities such as programming logging calibration and output of data and diagnostics New and improved MW algorithm now based on temperature and pressure correction of sound speed Gives wider range higher accuracy and improved compensation for non hydrocarbon gases such as CO H5 N and CO 4 3 2 Data Logging Keypad programmable for setting up log units update interval start and stop times Memory capacity for more than 43 000 data points in a linear or circular log for standard and error logs 4 3 3 Display Functions Graphic display shows flow in numeric or graphic format Also displays logged data and diagnostics 4 3 4 Printer Signal Output Supports wide variety of thermal and impact printers Output data in numeric or graphic strip chart format 44 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 4 Specifications 4 4 Transducer Flowcell Specifications 4 4 1 Transducer Type Standard GE type T5 welded assembly of Ti transducer For agency certifications contact the factory 4 4 2 Temperature Range Standard 94 to 300 F 70 to 150 C Optional high temperature 94 to 536 F 70 to 280
44. es described in Chapter 1 Installation of this manual and the pin assignments shown in Figure 15 on page 56 6 Place the power switch item 1 in the ON position The Model GF868 is now completely wired Proceed to Chapter 2 Initial Setup of this manual for further instructions C 4 Rack Mount Front Panel The keypad and LCD display for the rack mount Model GF868 are located on the front panel These items are identical in form and function to those used on the standard Type 4X enclosure but the layout is somewhat different Refer to Figure 16 on page 57 for the front panel layout of the rack mount Model GF868 and follow the standard procedures detailed in the main body of this manual 54 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Appendix C Optional Enclosures 4 19 106 x qu foso e 14 83 377 L 16 99 432 i E G ETA i i qe o 11 82 11 37 289 800 13 18 833 e e 1 1 L 15 70 399 l ES El 3 e 225 522 E 57 133 pa fe El 1 L 18 25 464 la 19 00 483
45. for Flare Gas Startup Guide 31 Chapter 3 Operation Chapter 3 Operation 3 1 Introduction See Chapter 1 Installation and Chapter 2 Initial Setup to prepare the system for operation When the meter is ready to take measurements proceed with this chapter The following specific topics are discussed Powering Up e Using the Display e Taking Measurements Note All inputs and outputs of the Model GF868 are calibrated at the factory prior to shipment If it becomes necessary to recalibrate any of the inputs and or outputs see Chapter 1 Calibration of the Service Manual WARNING To ensure the safe operation of the Model GF868 it must be installed and operated as described in this manual In addition be sure to follow all applicable local safety codes and regulations for the installation of electrical equipment DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 33 Chapter 3 Operation 3 2 Powering Up Because the Model GF868 does not have an ON OFF switch it will power up as soon as the connected power source is energized Note For compliance with the European Union s Low Voltage Directive 2006 95 EC this unit requires an external power disconnect device such as a switch or circuit breaker The disconnect device must be marked as such clearly visible directly accessible and located within 1 8 m 6 ft of the Model GF 868 The power cord is the main disconnect device Immediately upon p
46. for this page DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Appendix C Optional Enclosures Appendix C Optional Enclosures C 1 Introduction Upon request the Model GF868 flowmeter may be supplied in an enclosure other than the standard Type 4X enclosure described in Chapter 1 Installation of this manual Although the standard installation and wiring instructions still apply in general terms some of the details may vary for different enclosure types Refer to the appropriate sections of this appendix for the specific type of enclosure provided C 2 Rack Mount Enclosure The Model GF868 flowmeter is available in a rack mount enclosure for installation in a standard 19 electronics rack Refer to Figure 14 on page 55 for the dimensions of this unit Simply slide the Model GF868 into the rack at the desired height and fasten the unit securely to the rack with four screws in the locations provided at the sides of the front panel After the unit has been physically mounted into the rack proceed to the next section for instructions on wiring the meter C 3 Rack Mount Wiring The rack mount Model GF868 requires exactly the same electrical connections as the standard version However the locations and type of connectors used for the various components are different Refer to Figure 15 on page 56 and complete the following steps 1 Wire the power input on the right side of the rear panel as follows a Make sure
47. gnments shown in Figure 9 on page 18 Figure 7 shows sample wiring diagrams for the totalizer frequency outputs Totalizer Output Model GF868 Pulse Counter Max Current 4A Max Voltage 150V Isolation Voltage 500V Volts Max Load Power 10W In Int Pwr Sup C Isolated Return Common Frequency Output Model GF868 Frequency Counter C Isolated Return Figure 7 Totalizer Frequency Output Wiring 1 0 6 Wiring the RTD Inputs The GF868 can accommodate to 6 RTD Resistance Temperature Device inputs card s Each RTD inputs card provides two direct RTD inputs A and B Each RTD input requires three wires Feed the wires through one of the conduit holes on the bottom center of the enclosure Connect the wires to the 8 pin RTD inputs option card terminal block as shown in Figure 9 on page 18 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 15 Chapter 1 Installation DREUCLCONLONECIONECE NN CNMECKCNGME ROI II M A ss no content intended for this page 16 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 1 Installation 14 24 362 0 75 19 A 2 69 68 L 1 10 28 6 Places
48. his warranty is limited to restoring the instrument to normal operation or replacing the instrument at the sole discretion of GE Sensing Fuses and batteries are specifically excluded from any liability This warranty is effective from the date of delivery to the original purchaser If GE Sensing determines that the equipment was defective the warranty period is one year from delivery for electronic or mechanical failures one year from delivery for sensor shelf life If GE Sensing determines that the equipment was damaged by misuse improper installation the use of unauthorized replacement parts or operating conditions outside the guidelines specified by GE Sensing the repairs are not covered under this warranty The warranties set forth herein are exclusive and are in lieu of all other warranties whether statutory express or implied including warranties or merchantability and fitness for a particular purpose and warranties arising from course of dealing or usage or trade Return Policy If a GE Sensing instrument malfunctions within the warranty period the following procedure must be completed 1 Notify GE Sensing giving full details of the problem and provide the model number and serial number of the instrument If the nature of the problem indicates the need for factory service GE Sensing will issue a RETURN AUTHORIZATION NUMBER RAN and shipping instructions for the return of the instrument to a service center will be prov
49. ided 2 If GE Sensing instructs you to send your instrument to a service center it must be shipped prepaid to the authorized repair station indicated in the shipping instructions 3 Upon receipt GE Sensing will evaluate the instrument to determine the cause of the malfunction Then one of the following courses of action will then be taken e Ifthe damage is covered under the terms of the warranty the instrument will be repaired at no cost to the owner and returned e If GE Sensing determines that the damage is not covered under the terms of the warranty or if the warranty has expired an estimate for the cost of the repairs at standard rates will be provided Upon receipt of the owner s approval to proceed the instrument will be repaired and returned DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 63 Warranty no content intended for this page 64 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide ae DECLARATION Sensing OF CONFORMITY DOC 0013 Rev A We GE Sensing 1100 Technology Park Drive Billerica MA 01821 USA declare under our sole responsibility that the DigitalFlow DF8688 Liquid Ultrasonic Flowmeter DigitalFlow GC868 Clamp On Gas Ultrasonic Flowmeter DigitalFlow GF868 Flare Gas Mass Ultrasonic Flowmeter DigitalFlow GM868 General Purpose Gas Ultrasonic Flowmeter DigitalFlow GS868 Steam Mass Ultrasonic Flowmeter to which this declaration rel
50. itiative directive 2002 96 EC The equipment that you bought has required the extraction and use of natural resources for its production It may contain hazardous substances that could impact health and the environment In order to avoid the dissemination of those substances in our environment and to diminish the pressure on the natural resources we encourage you to use the appropriate take back systems Those systems will reuse or recycle most of the materials of your end life equipment in a sound way The crossed out wheeled bin symbol invites you to use those systems If you need more information on the collection reuse and recycling systems please contact your local or regional waste administration Visit http www ge mcs com en about us environmental health and safety 1741 weee reg html for take back instructions and more information about this initiative iv DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Contents Chapter 1 Calibration 1 1 1 1 1 2 1 3 1 4 1 5 1 6 eo o dt als Eee ea 1 WY ay cle es 4 alo E dc 1 Site Consider e a e ad e e de eS 2 AS apo 38 ys LOCATION AAA CUM Ee A O 2 LC O O e vo a a o A 2 1 223 o e e As ao lA A e A A M De PA CINE 2 A AA A A A 2 1 2 5 Temperature and Pressure Transmitters AS A A taa 3 26 Transd cer Cables usc oe ede id Ea NE PUE Ies 3 Installing a local snos uote NEU to Meee EIN qae dna lake PU Ln eU Ss eden VUL PUO PEDE Pit 3 Installing Temperature a
51. lectrical equipment in your area Note If your unit complies with the European Union s Low Voltage Directive IEC 1010 it has a transparent plastic cover over the electrical connections This cover must remain in place except while you are wiring your unit Reinstall the shroud after the wiring has been completed Once the GF868 is completely wired proceed to Chapter 2 Initial Setup to configure the unit for operation 1 0 1 Wiring the Line Power ATTENTION EUROPEAN CUSTOMERS To meet CE Mark requirements all cables must be installed as described in Appendix A CE Mark Compliance The Model GF868 may be ordered with power inputs of 100 120 VAC 220 240 VAC or 12 28 VDC The label on the shroud inside the electronics enclosure just above the TB1 line power terminal block lists the line voltage setting and fuse rating for your unit The fuse rating also appears in Chapter 4 Specifications Be sure to connect the meter only to the correct line voltage The allowable line voltages and fuse ratings are shown in Table 1 on page 9 Note For compliance with the European Union s Low Voltage Directive IEC 1010 this unit requires an external power disconnect device such as a switch or circuit breaker The disconnect device must be marked as such clearly visible directly accessible and located within 6 ft 1 8 m of the GF 868 Refer to Figure 3 on page 7 or Figure 9 on page 18 to locate terminal block TB1 and connect the line power as
52. macr acm kacm mmacm E SPECIAL TRANSDUCER E TRC FREQUENCY 2 Skan M Mod a f T funi a rr PRESSURE UNITS y B El Fe z n Measure Mode f Y scr kscr muscr scm kscm musem English Metric sox took 20 500k 25k 39 Fi Fe J S 2 Y f 3 J Sn sm TOTAL DECIMAL DIGITS E E Fi F2 Tw A PEN F2 FS Fa Psia Psg Bara BARg PIPE OD English Metric 3 ES ny 2 9 JP ne Fi F2 kPaa KPag inch m MASS FLOW SIR Sd inen 8 M English Metric GAGE F3 5 F3 Fa FA F2 PRESSURE iwPI 3 mia Tous ara TONNE STOPWATCH TOTALIZER 3 j B ES PIPE WALL MASS FLOW TIME AUTO MNUAD PATH LENGTH P English Metric A r ra m F i ic E F4 7 sec iN HR maY PER E BY n El VOLUMETRIC UNITS English Metric inch teet mm om E MDOT DECIMAL DIGITS Fi a 152 F3 Fi Fe F3 ES ACF KACF mmacr acm kacm MMACM AXIAL LENGTH L FEE X F1 F2 F3 F4 A ia e BTS 5 dea m de de e re ren reet mm m MASS TOTALIZER scr kscr wwscr scm kscw umscm English Metric REYNOLDS CORRECTION Fi F2 F3 Fa e VOLUMETRIC TIME e je 18 KiB mus Tons ke ronne JE Fa FS Fa oF on USEC MIN HR may KINETIC VISCOSITY MASS O CIAL DIGITS CALIBRATION FACTOR Fi F2 Es 2 VOL DECIMAL DIGITS C C33 C2 C8 F1 F2 F3 F4 Ti y o 1 2 3 DigitalFlow GF868 Ultrasonic Flowmeter
53. nd Pressure Transmitters 00 cece cece cece cece nee rr 5 M nting thie ESSE ENClOSUTE na itty ck o O LUE 5 Making Electrical Connections e E ee oe ron EA LU 6 TOTWiring the NRO POWE ee fecu ut Lot oem RR ina Me tC eae rfr t 6 Oe AIPM He A ss AA inane eeu ca le T dece Won eae ges 8 1 0 1 Wiring the 0 4 20 mA Analog Outputs A A e ied td os tiled ce ota 8 AOAN TANE Sa RE O ted tener Ces NCTE So Re Meese 8 TOS WIR an Alias Option Card sunt merda ea ete DL ado a stu lea CU da 13 1 0 4 Wiring a 0 4 20 mA Analog Inputs Option Card ini at e e e el ns et s 14 1 0 5 Wiring the Totalizer Frequency Outputs sas ict SPUR da THO ee tI S ea CUES 15 1 0 6 Wiring the A ER TT P el ce ait At AN cal hh ek sas NS A 15 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide V Contents Chapter 2 Initial Setup A HOD uctor dos Easter ocode edu dte T EE OE aye ita aca ae P st euet te t luus acted 21 Ze sNavidiatina Trou the User Program oos aee eco dam NO tO a toe CHEN ess 21 23 Accessing the User Program est uale e o died cares bs 22 23 le CACA Meteri MET pH 22 AA A ER 22 A ele No AAA A A A A ode bata 23 A AAA A DE DER REL 23 CAA e Mater 15 is Lois bedrooms tho Me poder es oko lute ad ea Li 23 2 54 dnd 2 chapnel Meters fn os qo aeree up PE ES Hic REP DEREN QI OPI E De Ta EDU E 23 25 Entering System Data for a Channel oec etse 1e Soc Pede ck Ads 24 25d T Chapel Meter cues esed ate btt dta m or ERU VfL P PARES ua ARMS DRY Fett
54. nnel Meter 1 Enter the ACTIV submenu by pressing F1 at the Channel PROGRAM prompt 2 Press F1 OFF to deactivate the channel and return to the Channel PROGRAM prompt or press F2 to activate the channel in BURST mode 2 4 3 1and2 Channel Meters 3 Press F1 to select Skan mode or F2 to select Skan Measure mode The meter will exit the ACTIV submenu and return to the channel menu screen As indicated in the above prompt the Model GF868 flowmeter can take measurements in two different ways Skan is a low resolution technique for locating the acoustic signal and for high velocity measurements It is more robust in a noisy environment than the Measure technique Measure is a more precise technique best used for low velocity measurements If Skan is selected at the next prompt the instrument uses this technique exclusively However if S M is selected the meter uses Skan to find the acoustic signal and then tries to use the Measure technique for a more precise measurement Proceed directly to the next section to program the SYSTM submenu DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 23 Chapter 2 Initial Setup 2 5 Entering System Data for a Channel Begin programming the SYSTM submenu in either the Channel or 2 Channel section below 2 5 1 A 1 Channel Meter For the 1 Channel Model GF868 the information entered in the SYSTM submenu pertains to the global operation of the flowmeter 1 Atthe
55. ny output Velocity 0 to 275 ft s 0 to 85 m s Volumetric flow rate standard or actual Molecular weight 2 to 120 g mol Sound speed 500 to 5000 ft s 150 to 1500 m s Mass flow rate O to 4 000 000 Ib h 0 to 2 000 000 kg h Analog Input Options Select up to 3 boards from one of the following types 1 Transmitter Input Board with two isolated 0 4 20 mA inputs and 24 V loop power 2 RTD Input Board with two isolated 3 wire RTD inputs Span 148 to 662 F 100 to 350 C Analog Output Options Select up to 3 additional output boards each with four isolated 4 20 mA outputs 1000 maximum load Digital Interfaces Standard RS232 Optional RS485 multiuser RS485 MODBUS HART Ethernet TCP IP MODBUS TCP IP Ethernet DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 43 Chapter 4 Specifications 4 2 5 Input Output Specifications cont Totalizer Frequency Output Options Select up to 3 Totalizer Frequency Output Boards each with four outputs per board 10 kHz max All boards allow software selectable functioning in two modes Totalizer Mode one pulse per defined unit of parameter e g 1 pulse SCF Frequency Mode 5 volt frequency proportional to magnitude of parameter e g 10 Hz 1 SCFM Alarm Options Select up to 2 boards of one of the following types Standard Relay Board with three non hermetic Form C relays Hermetic Relay Board with three hermetically seal
56. oltage Directive IEC 1010 this unit requires an external power disconnect device such as a switch or circuit breaker The disconnect device must be marked as such clearly visible directly accessible and located within 6 ft 1 8 m of the GF 868 1 2 2 Flowcell Location The pipeline flowcell consists of the flowmeter transducers and any pressure and temperature transducers that may be used as part of the flowmeter system Ideally the section of pipe chosen as the flowcell should be a pipe section with easy access for example a long stretch of pipe that is above ground However if the flowcell must be on an underground pipe dig a pit around the pipe to facilitate the transducer mechanisms 1 2 3 Transducer Locations For a given gas and pipe the Model GF868 s accuracy depends primarily on the location and alignment of the transducers on the pipe In addition to accessibility when planning for transducer location consider the following guidelines Locate the transducers so that there are at least 20 pipe diameters of straight undisturbed flow upstream and 10 pipe diameters of straight undisturbed flow downstream from the measurement point To ensure undisturbed flow avoid sources of turbulence in the fluid such as valves flanges expansions and elbows swirl and dips or low spots in which condensed liquid may collect Because condensate or sediment that collects at the bottom of the pipe may cause increased attenuation of the
57. on Mass Flow hydrocarbon mixtures typical 1 path 3 to 7 2 path 2 4 to 5 Note Dependent on accuracy of temperature and pressure inputs 4 1 6 Rangeability 2750 1 4 1 7 Repeatability 1 at 0 5 to 100 ft s 15 cm s to 30 m s 4 2 Electrical Specifications 4 2 1 Power Supply Input Options 100 to 130 VAC 50 60 Hz with 1 0 A Slo Blo Fuse 200 to 265 VAC 50 60 Hz with 0 5 A Slo Blo Fuse 12 to 28 VDC with 3 0 A Slo Blo Fuse 4 2 2 Power Usage 20 W maximum 4 2 3 Protection Built in mains power surge lightning protection 4 2 4 European Compliance This unit complies with EMC Directive 2004 108 EC and 2006 95 EC Low Voltage Directive Installation Category II Pollution Degree 2 and PED 97 23 EC for DN lt 25 42 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 4 Specifications 4 2 5 Input Output Specifications Keypad 39 key membrane keypad with tactile feedback Display Two independent software configurable 64 x 128 pixel LCD graphic displays Printer Terminal Communications One RS 232 port for printer terminal PC SCADA etc Standard Inputs Two isolated 4 to 20 mA inputs 121 load with integral 24 VDC power supply Note These inputs are required for temperature and pressure inputs Standard Outputs Six 4 20 mA outputs software assignable Two outputs for 550 ohm maximum load Four outputs for 1000 ohm maximum load Measurements assignable to a
58. ower up the Model GF868 displays GE and the software version in the left pane of the display window The Model GF868 performs a series of internal checks and display the results in the right pane of the display window Note Ifthe Model GF868 fails any of the internal checks try disconnecting the power and then re powering the unit If the Model GF868 continues to fail any of the internal checks contact the factory for assistance After successfully performing the internal checks the Model GF868 begins taking measurements The power up display is replaced by a measurement mode display similar to that shown in Figure 12 Note As a minimum the system and pipe parameters for each installed channel of a 2 channel meter must be entered before the Model GF868 can display valid data Refer to Chapter 2 Initial Setup for specific instructions ISITEVPIPED sieve Velocity m s Volumetric SCM M 6 95 1038 7 ver fl mm ECN ECN E NND NND DNE Figure 12 A Typical Measurement Display Proceed to the next section for a description of the components of the Model GF868 display screen 34 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 3 Operation 3 3 Using the Display The Model GF868 display is divided into a left pane and a right pane The two screen panes can be set independently to display any of the available measurement or diagnostic parameters The components of a typical measurement mode sc
59. r Symbols 52s 2234 922 ada ries 36 Measurement Mode 2 0 ees 34 Optim Bab cask outa Aceon DR 35 Parameter Options ooann m S PEERS MEN 38 Pointen ida sad ad e A E ANEA 35 Prompto S cao e s a AE 35 Selecting o doe A Ores 35 Using esse atts BAA GAAS AAA 35 Display Functions arrastrar 44 Document Number yx va wx eee xx ex i E Environmental Compliance lesus iv European Compliance of GF868 42 F Fieldbus Network ous sud red 12 Connections s oue Lori CB UR 12 Flow Accuracy 2 i vig ae ex Geass RUE A 41 Flow Computer ovio RR obee es 44 Function Keys d oue vU tes NY ER 36 Ens Ram a bw ab E EVE 42 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Index H Hardware Configurati0N ooooooooo 41 Information Paragraphs 0000 00s 111 Initial Setup Data Tables nnie a 50 Input Output Specifications oooooooo o 43 Installation Instructions for CE Mark Compliance 47 Trit rnal TESS ia 23 Pye ea EN a aes one Pek 34 K Kinematic Viscosity sey gh Ge ee ote are ks 28 L Locator Bar Ne gre tS cone eia o oss ke aE 35 M Mass Flow Accuracy cuv 0leduwk weg ea 42 Measurement Outputs 0 eee 43 Measurements Displaying iiy Ap hee abe hie 34 37 Parameter Options ess x d EE ARR 38 Taking oy oc tu eoi o aan Ce 34 37 MODBUS TCP Wiring the 11 Molecular Weight i iud vu atra 42 O Operating Temperat
60. reen are shown in Figure 13 Locator Bar Pointer Velocity 6 95 Low Signal a hs A Error Code Option Bar Figure 13 Display Screen Components Both panes of the display screen are continuously updated but only one pane at a time may be programmed or changed To select a pane press the corresponding side of the SCREEN key on the keypad The currently selected screen pane will have function names in the option bar while the other screen pane will have a blank option bar See the Programming Manual for detailed instructions on using the keypad As shown in Figure 13 each pane of the display screen is divided into the following three general areas the locator bar the prompt area the option bar The upper portion of the screen pane is called the locator bar While the meter is taking measurements the locator bar displays the name of the currently selected site file In addition the locator bar identifies the task that is currently being performed and the status of that task For example pressing the PROG key on the keypad will cause the locator bar to display PROGRAM and Start to indicate that the meter is ready to be programmed from the start of the User Program DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 35 Chapter 3 Operation 3 3 Using the Display cont At various times one or more of the following four symbols may be displayed on the far right of the locator bar
61. refer to the Programming Manual and or the Service Manual for the instrument 3 4 1 Foundation Fieldbus Communications Foundation Fieldbus provides a means of communicating with the flowmeter The patent numbers which apply are 5 909 363 and 6 424 872 This Foundation Fieldbus device supports two Analog Input AI blocks which can be configured to supply the following measurements on the network see Table 9 on page 39 38 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 3 4 1 Foundation Fieldbus Communications cont Chapter 3 Operation Table 9 Measurement Parameter Options Using a Foundation Fieldbus Device Channel 1 Units Ch1 Velocity ft s or m s Ch2 Velocity Channel 2 Units ft s or m s Avg Velocity ft s or m s Ch1 Act Volumetric VOL_U Ch2 Act Volumetric VOL_U Avg Act Volumetric VOL_U Ch1 Std Volumetric VOL_U Ch2 Std Volumetric VOL_U Avg Std Volumetric VOL_U Ch1 Fwd Totals TOT_U Ch2 Fwd Totals TOT_U Avg Fwd Totals TOT_U Ch1 Rev Totals TOT_U Ch2 Rev Totals TOT_U Avg Rev Totals TOT_U Ch1 Tot Digits none Ch2 Tot Digits none Avg Tot Digits none Ch1 Mass Flow MASS U Ch2 Mass Flow MASS U Avg Mass Flow MASS U Ch1 Fwd Mass Totals MTOT U Ch2 Fwd Mass Totals MTOT_U Avg Fwd Mass Totals MTOT_U Ch1 Rev Mass Totals MTOT_U Ch2 Rev Mass Total
62. rk compliance is required only for units intended for use in EEC countries A 2 Wiring The Model GF868 must be wired with the recommended cable and all connections must be properly shielded and grounded Refer to Table 10 for the specific requirements Table 10 Wiring Modifications Cable Type Termination Modification RG62 a u Add metallic cable clamp from braid to chassis gnd Transducer Armored RG62 a u or conduit None grounded via cable gland 22 AWG shielded e g Baystate 78 1197 Terminate shield to chassis ground Armored conduit None grounded via cable gland Input Output 14 AWG 3 conductor shielded e g Belden An external ground to the chassis is required 19364 Armored Conduit None grounded via cable gland For CE compliance power and I O cables must be shielded Cables to be terminated within cable Shielding gland at the GF868 Shielded cable is not required when installations include metal conduit A 3 External Grounding For CE Mark compliance the electronics enclosure and the transducer fixture must each have an external ground wire attached Note Ifthe Model GF666 is wired as described in this appendix the unit will comply with the EMC Directive 2004 108 EC DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 47 48 no content intended for this page DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Appendix B Data
63. s MTOT_U Avg Rev Mass Totals MTOT_U Ch1 Mass Tot Digits none Ch2 Mass Tot Digits none Avg Mass Tot Digits none Ch1 Timer sec Ch2 Timer sec Avg Timer sec Ch1 Error Code none Ch2 Error Code none Avg Error Code none Chi SSUP none Ch2 SSUP none Avg SSUP none Chi SSDN none Ch2 SSDN none Avg SSDN none Ch1 Sound Speed ft s or m s Ch2 Sound Speed ft s or m s Avg Sound Speed ft s or m s Ch1 Density see note Ch2 Density see note Ch1 Temperature Deg F or C Ch2 Temperature Deg F or C Ch1 Pressure Metric or English units are determined by the setup of the flowmeter PRESS_U Ch2 Pressure PRESS_U Totalizer digits are available for informational purposes only Respective totals are automatically scaled by the Tot Digits value selected in the flowmeter setup If the meter is outputting Mole Weight the unit is mw otherwise it is the programmed pressure unit VOL_U TOT_U MASS_U MTOT_U and PRESS_U are determined by the units chosen for these measure ments in the flowmeter setup See the instrument User s Manual for the setup of these parameters DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 39 Chapter 3 Operation no content intended for this page 40 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide
64. se Shannon Free Zone East Shannon County Clare Ireland Tel 353 0 61 470291 E mail gesensingsnnservices ge com An ISO 9001 2000 Certified Company www ge mcs com en about us quality html www ge mcs com 2011 General Electric Company All rights reserved Technical content subject to change without notice 910 194U Rev E
65. sing the SAVE submenu Proceed to Chapter 3 Operation for instructions on taking measurements or refer to the Programming Manual for instructions on programming the Model GF868 s advanced features DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 29 Chapter 2 Initial Setup no content intended for this page 30 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 2 Initial Setup 2 Channel 1 Channel NOTE Plain text represents prompt area messages and boxed text represents option bar choices F1 F2 F3 F4 Fx represent function keys to select option bar choices cm cHe Losy save GLOBE SAVE Channel PROGRAM status PROGRAM status Fi F2 F3 F4 activ C svstm rre Cw 2 Channel 1 Channel 2 Channel 1 Channel TRANSDUCER NUMBER Channel status TOTALIZER UNITS English Metric CHANNEL LABEL SITE LABEL Fi SITE MESSAGE El EZ Sie ctas Fl a Fe En La us Eo CHANNEL MESSAGE SYSTEM UNITS sPec i Rina r Y SYST orr guns Burst cr kacr m
66. t d cte hadnt ecd dt e 42 4 V Repeatability n erc AS ee tut ood LER TEE A hs eat Euer Ringe see a TR Eo Ce A Oe Pd 42 Electrica Specifications sne Aor ocio qx e a pee dove FE Sabon ee beni ip PERITI UN dU 42 qo I DoWerSudbbly s occus io tte Deo I tea ied sl peed ood die UI Did dd ahead iced ud 42 22 2 POWer USAGE i csctenterpotese tnr UID VERE REDE Goo ale MC ONDE STR RED EIL dalle ta MENU Le TR 42 HS O A A IPC TR Rea Tae Tee 42 d EBrepearmcomblldli ves vec cote es ES ccrtc ut rcs tede e AR E R 42 42 5 Input Output Specifications acsi et Eo oos Fo ra oto Cen evi totam tact bep eus 43 Operational Specifications acc oio otiam eO Uu aa aiias uL colt p EL a tee 44 da Row Comiptiterdbiitslfi ss a A A A 44 45 2 Data LOO OIG canoes cv eoe APO Core rade ht AH ROG e SOL RC PI oT MR del 44 ASIS IP ae a Ten e PEE asthe RUN as Doa ao eos e o a ta e es od e a 44 lt e Output AA A alla 44 Transducer Flowcell Specifications ia Se ee 45 ALTA e REA 45 442 A AAA aee Gabe wen te OPERA Mek ME Ub the EI eed 45 4 43 Pressure Range usce eost bat RPebS E ERR a o arate gl ee lige ieee sab eeua sete ts 45 RAMAS Sa dad eU Rr DEEP pra ind 45 A OA ES AS IS a 45 AE MOB ad St dd o a 45 AMICS e e la an 46 UPS SPOGIPIG CO OO O pS E 46 ES o ed o DI 46 4 5 3 Preamplifier with Explosion proof HOUSING A teta actae E E RI gae DR RO UE Se ar eR ida 46 Appendix A CE Mark Compliance A 1 A 2 A 3 Inquire rr rs a 47 nom UEM 47 El UI ores CNR Se LA orae MEUM E E t EE
67. ther symbols and text that may appear on the display screen refer to the Service Manual 36 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 3 Operation 3 4 Taking Measurements The Model GF868 is capable of displaying several different variables in a variety of formats However this manual will only discuss the basic measurement displays in the default screen format Refer to the Programming Manual for instructions on setting up alternate screen displays and see the Service Manual for a discussion of the diagnostic parameters listed under the DIAG option Note This section assumes that the left pane of the display screen is currently active However the same instructions apply equally to the right screen pane when it is active Just change the function keys from F1 FA to F5 F8 For a 2 channel Model GF868 the following initial screen appears immediately upon completion of the internal checks As an example the display shows the measured velocity in ft sec for Channel 1 Ch1 Channel Label eld To select a different channel display option press F1 F4 or and F1 See Ch1 Velocity Ft s Table 7 for a complete description of the available options 6 95 aa codes appear here 1 cH2 sum DIF Table 7 Channel Display Options Option Bar Choice F1 CH1 Channel 1 F2 CH2 Channel 2 F3 SUM Channel 1 Channel 2 F4 DIF Channel 1 Channel 2 D
68. tor route the cable through the bottom of the GF868 and wire the other end of the cable to the Ethernet network according to the manufacturer s instructions Note The MAC address for a specific GF868 is included with customer documentation For more information on setting up the MAC address refer to Chapter 6 of the Programming Manual DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 11 Chapter 1 Installation 1 0 2e Wiring the Foundation Fieldbus Network Fieldbus network connections are made at J8 J9 pins 1 and 2 see Figure 5 Optionally a shield can be connected to J8 J9 pin 3 depending on the network wiring Connector J8 or J9 will be installed depending on the option ordered by the customer No connections are made to J8 J9 pins 7 and 9 under normal operation If it is desired to reset the network board to factory defaults 1 Connect a jumper between J8 J9 pin 7 and pin 9 2 Power cycle the instrument 3 Ten seconds after the power has been restored to the unit remove the jumper to return the network board to normal operation Figure 5 Network Connections Standard Option Interior 12 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 1 Installation 1 0 3 Wiring an Alarms Option Card The GF868 can accommodate 1 to 6 alarm option card s Each alarm option card provides three Form C relays A B and C The alarm relays on the option card are available
69. ure es 41 Option Bar ns Aa yes 35 Option Card Setup Information Table 49 P Parameter ODBODS secet Wed pk et km EE ES 38 Path Lemos Sii 59 Pipe OD Available UnitS o oooooo 27 Pipe OD Programming lt 2 543 s st ta eS 27 PIPE Submenu ooer gon A 27 muni dq e Mr 35 Power Supply ai ras 42 Power Usage raid iii 42 Powering Up Disp daa CNB es deb Dos 34 Internal Checks 4 i5 ek exa e ER AGREE YA 34 61 Index P cont Pressure Ranges cork sus baie ke akon eee Re 45 Printer Signal Output s dg og ves ee eee ee 44 Printer Terminal Communications 43 Programming Data R cord ys ate bis Shae AUC A ered 49 POMP UATE A AA Saale 35 Protection Electrical oy iced eC meo AWO 42 R Rack Mount Front Panel 3 0 de a ies 54 Installation uoo Ao a ss 53 WIE od eret ort SHORT UAE RR ARE 53 Range sped ew hate UO a owes aa ey eee 41 Rangeability 4o sd px e a Rede aeg ow Ree 42 Repeatability sie rris pep RR DA RR YR 42 Return Policy Lois 65 Reynolds Correction s s A 28 RS232 Port See Serial Port S Safety Auxiliary Equipment Voces VA iii General Issues est ess e utis Gal he 111 Personal Equipment 2 525 a eoa is 111 Screen Selecting osse eX pr cR ERES 35 Serial Port Connecting ci coetu vu ent b SA RE ape 8 Pin Assignments ser wow sae VUE EN 8 Specifications Electrical uso RUE E Xue V RR 42 o eos ue VV RC NEP E 41 Input Output esas ee vue per eRe ee 43 Mass Flow Accuracy
70. ure it for use with the GF868 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 9 Chapter 1 Installation 1 0 2b Wiring the RS485 Interface Use the optional RS485 serial port to network multiple GF868 flowmeters to a single computer terminal Upon request the standard RS232 port on the GF868 may be configured as a two wire half duplex RS485 interface through a device such as the INMAC Model 800052 RS232 RS422 RS485 converter To wire the RS485 serial port refer to Figure 9 on page 18 and complete the following steps 1 Disconnect the main power to the unit and remove the cover 2 Install the required cable clamp in the chosen conduit hole on the side of the electronics enclosure 3 Feed one end of the cable through the conduit hole wire it to terminal block J1 and secure the cable clamp Connect the other end of the cable to the converter as shown in Figure 4 Converter 1 TD OUT Figure 4 Typical RS485 Connections WARNING To meet CE Mark requirements all cables must be installed as described in Appendix A CE Mark Compliance 4 If wiring of the unit has been completed reinstall the plastic shroud close the cover on the enclosure and tighten the latches 5 Connect the converter to the control system as described in its User s Manual 10 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 1 Installation
71. versions of the Model GF868 Proceed to the and 2 Channel Meters section to complete the programming of this submenu 24 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide Chapter 2 Initial Setup 2 5 2 A2 Channel Meter For the 2 Channel Model GF868 the information entered in the SYSTM submenu pertains only to the currently selected channel 1 At the User Program screen shown press the F2 function key to program the SYSTM submenu 2 Enter a Channel Label of up to 9 characters Press ENT 3 Enter a Channel Message of up to 21 characters Press ENT Note For the 2 Channel Model GF666 the System Units Pressure Units and Stopwatch Totalizer prompts which are not required to make the unit operational are located in the GLOBL submenu See the Programming Manual for details The remainder of the SYSTM submenu is identical for the 1 Channel and 2 Channel versions of the Model GF868 Proceed to the and 2 Channel Meters section below to complete the programming of this submenu 2 5 3 1 and 2 Channel Meters 1 Use the F1 F4 and gt keys to select the desired Volumetric Units for the flow rate display The abbreviations and definitions of all the available volumetric and totalizer units are shown in Table 4 The choices shown on the option bar are determined by the selection made at the previous SYSTEM UNITS screen Table 4 Available Volumetric Totalizer Units English Metric Actual Units AC

Download Pdf Manuals

Related Search

Related Contents

AnyForm User Manual English  IKA ULTRA-TURRAX® T 50 digital  Whirlpool RH4830XLQ1 User's Manual  BOSULIF®  Clarion DXZ865MP User's Manual  Pico DeviceNet Communication Module  華韓畳語ニ取扱説明書事スクエアサイン  Chauvet Marine Lighting FC-T User's Manual  Manual do Usuário  Manuale di installazione e manutenzione  

Copyright © All rights reserved. Failed to retrieve file