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Chapter 1. Installation

6

DigitalFlow™ GF868 Startup Guide (1 and 2-Channel)

1.7 Making Electrical Connections

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. 

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. 

Note:

If your unit complies with the European Union’s Low Voltage Directive, 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.

1.7.1 Wiring the Line Power

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, 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 GF868. 

 

ATTENTION EUROPEAN CUSTOMERS! I

n order to meet CE Mark requirements, all wiring 

connections must be made in accordance with the instructions in Appendix A,

 

CE 

Mark Compliance.

WARNING! RACK MOUNT CUSTOMERS: Refer to Appendix C for a wiring diagram and 

installation information for your unit.

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 electrical equipment in your area.

 

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.

Содержание DigitalFlow GF868

Страница 1: ...GE Measurement Control Gas Analysis 910 194U Rev F February 2015 DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 1 and 2 Channel...

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Страница 3: ...2015 General Electric Company All rights reserved Technical content subject to change without notice DigitalFlow GF868 Ultrasonic Flowmeter for Flare Gas Startup Guide 1 and 2 Channel 910 194U Rev F...

Страница 4: ...ii no content intended for this page...

Страница 5: ...us situation which can result in minor or moderate injury to personnel or damage to the equipment if it is not avoided HIGH VOLTAGE This symbol indicates the presence of high voltage It calls your att...

Страница 6: ...c Equipment WEEE take back initiative directive 2012 19 EU The equipment that you bought has required the extraction and use of natural resources for its production It may contain hazardous substances...

Страница 7: ...tters 3 1 3 6 Transducer Cables 3 1 4 Installing a Flowcell 3 1 5 Installing Temperature and Pressure Transmitters 5 1 6 Mounting the GF868 Enclosure 5 1 7 Making Electrical Connections 6 1 7 1 Wiring...

Страница 8: ...Channel Meter 23 2 4 3 1 and 2 Channel Meters 23 2 5 Entering System Data for a Channel 24 2 5 1 A 1 Channel Meter 24 2 5 2 A 2 Channel Meter 25 2 5 3 1 and 2 Channel Meters 25 2 6 Entering Pipe Data...

Страница 9: ...t Output Specifications 43 4 3 Operational Specifications 44 4 3 1 Flow Computer Built in 44 4 3 2 Data Logging 44 4 3 3 Display Functions 44 4 3 4 Printer Signal Output 44 4 4 Transducer Flowcell Spe...

Страница 10: ...Appendix C Optional Enclosures C 1 Introduction 53 C 2 Rack Mount Enclosure 53 C 3 Rack Mount Wiring 53 C 4 Rack Mount Front Panel 54 Appendix D Measuring P and L Dimensions D 1 Introduction 59 D 2 Me...

Страница 11: ...s 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 missi...

Страница 12: ...pe 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 3 3 Transducer Locations For a given gas and pipe the...

Страница 13: ...ve electrical characteristics identical to the cable supplied by GE Cable must be type RG 62 A U coaxial cable 93 and each cable must be the same length within 4 in 1 4 Installing a Flowcell A flowcel...

Страница 14: ...gitalFlow GF868 Startup Guide 1 and 2 Channel 1 4 Installing a Flowcell cont Figure 1 Model GF868 Flowmeter System Transducer Flowcell Temperature Transmitter Pressure Transmitter Preamp Transducer El...

Страница 15: ...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 typic...

Страница 16: ...d 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...

Страница 17: ...nel 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...

Страница 18: ...nections 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 7 4 Wiring the Serial Port The Mod...

Страница 19: ...e 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 2 Wire t...

Страница 20: ...nd 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 bloc...

Страница 21: ...MAC address refer to Chapter 6 of the Programming Manual 1 7 4d Wiring the MODBUS TCP Interface Customers can also use a modified GF868 that provides a MODBUS TCP interface to communicate to an inter...

Страница 22: ...tor 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 facto...

Страница 23: ...g 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 int...

Страница 24: ...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...

Страница 25: ...otalizer frequency outputs Figure 7 Totalizer Frequency Output Wiring 1 7 8 Wiring the RTD Inputs The GF868 can accommodate 1 to 6 RTD Resistance Temperature Device inputs card s Each RTD inputs card...

Страница 26: ...Chapter 1 Installation 16 DigitalFlow GF868 Startup Guide 1 and 2 Channel no content intended for this page...

Страница 27: ...00 203 1 40 36 10 74 273 1 54 39 1 65 42 2 26 57 1 50 38 1 77 45 1 30 33 2 26 57 1 20 30 1 2 Conduit Plate 11 37 289 3 4 Conduit Plate 2 87 7 00 2 69 68 0 75 19 0 38 10 4 Places 0 13 3 4 Places 0 88 2...

Страница 28: ...alFlow GF868 Startup Guide 1 and 2 Channel 18 G N L2 L1 G Model GF868 Directive this unit requires an external Directive a transparent plastic shroud protects Figure 9 Model GF868 Electronics Console...

Страница 29: ...E AND TEMPERATURE INPUTS TEMPERATURE INPUT GF868 JUMPER WIRE NOT SUPPLIED JUMPER WIRE NOT SUPPLIED PREAMPLIFIER C O N S O LE U P D N D N X D C R PA NA ME TR IC S PR E 86 8 S N U P SUPPLIED BY GE 10 FO...

Страница 30: ...Chapter 1 Installation DigitalFlow GF868 Startup Guide 1 and 2 Channel 20...

Страница 31: ...three submenus within the User Program ACTIV enables you to select a measurement method SYSTM prompts you to enter the required system information PIPE lets you enter the necessary pipe data As a gui...

Страница 32: ...quence is required to reach the initial programming screen Only the submenus ACTIV SYSTM and PIPE are discussed in this manual Refer to the Programming Manual for information on the other submenus Not...

Страница 33: ...T mode 2 4 3 1 and 2 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 abo...

Страница 34: ...ts desired The abbreviations and definitions of all the available pressure units are shown in Table 3 below The choices shown on the option bar are determined by the selections made at the previous SY...

Страница 35: ...ction below to complete the programming of this submenu 2 5 3 1 and 2 Channel Meters 1 Use the F1 F4 and keys to select the desired Volumetric Units for the flow rate display The abbreviations and def...

Страница 36: ...se the F1 F4 keys to select the Mass Flow units listed in Table 5 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...

Страница 37: ...Enter the special transducer Time Delay Tw value supplied by the factory Press ENT The meter will only accept values from 0 to 1000 sec Note Tw is the time required for the transducer signal to travel...

Страница 38: ...h 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 s...

Страница 39: ...nnel 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 To leave the User Program and r...

Страница 40: ...Chapter 2 Initial Setup 30 DigitalFlow GF868 Startup Guide 1 and 2 Channel no content intended for this page...

Страница 41: ...E PRESSURE F4 F1 SCM KSCM F2 F1 KSCF F4 SCF F2 English Metric F4 3 F3 2 F2 1 F1 0 VOL DECIMAL DIGITS TOTALIZER UNITS F1 F2 ACM KACM F3 F2 KACF F1 ACF F3 F4 F1 SCM KSCM F2 F1 KSCF F4 SCF F2 English Met...

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Страница 43: ...ed Powering Up Using the Display 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 in...

Страница 44: ...s and display the results in the right pane of the display window Note If the Model GF868 fails any of the internal checks try disconnecting the power and then re powering the unit If the Model GF868...

Страница 45: ...e 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 foll...

Страница 46: ...sing the keypad 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 measuremen...

Страница 47: ...f the internal checks As an example the display shows the measured velocity in ft sec for Channel 1 The following screen appears after selection of the channel mode display option for a 2 channel Mode...

Страница 48: ...tion 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 six Analog Input AI blocks which...

Страница 49: ...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 Err...

Страница 50: ...Chapter 3 Operation 40 DigitalFlow GF868 Startup Guide 1 and 2 Channel no content intended for this page...

Страница 51: ...in 36 2 29 13 cm Weight 11 lb 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 Me...

Страница 52: ...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...

Страница 53: ...um load Four outputs for 1000 ohm maximum load Measurements assignable to any 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 sp...

Страница 54: ...able 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...

Страница 55: ...onal high temperature 94 to 536 F 70 to 280 C Optional low temperature 364 to 248 F 220 to 120 C 4 4 3 Pressure Range 0 to 1500 psig 1 to 1 5 bar 4 4 4 Materials Standard Titanium Optional Monel Hasta...

Страница 56: ...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 c...

Страница 57: ...external ground wire attached Note If the Model GF868 is wired as described in this appendix the unit will comply with the EMC Directive 2004 108 EC Table 10 Wiring Modifications Connection Cable Typ...

Страница 58: ...48 DigitalFlow GF868 Startup Guide 1 and 2 Channel no content intended for this page...

Страница 59: ...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 1...

Страница 60: ...hod 2 Channel ACTIV Channel 1 Channel 2 Channel Status Off Burst Channel Status Off Burst Measure Mode Skan S M Measure Mode Skan S M System Parameters SYSTEM 1 Channel 2 Channel Site Label Chan 1 Lab...

Страница 61: ...r 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 On Multi K factors Off On Edit...

Страница 62: ...52 DigitalFlow GF868 Startup Guide 1 and 2 Channel no content intended for this page...

Страница 63: ...fter 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 elec...

Страница 64: ...ordance with the instructions in Chapter 1 Installation of this manual 5 Wire any installed option cards using the same procedures described in Chapter 1 Installation of this manual and the pin assign...

Страница 65: ...GF868 Startup Guide 1 and 2 Channel 55 GF868 19 00 483 18 25 464 2 25 5 22 11 37 11 82 13 13 4 19 106 15 70 399 3 31 84 14 83 377 16 99 432 A OUT ALARMS A IN RTD IN 289 300 333 57 133 Figure 14 Model...

Страница 66: ...IG Output A RTN Output D SIG Output D RTN Output C SIG Output C RTN 7 8 6 4 5 2 3 1 7 8 6 4 5 2 3 1 0 4 20 mA ANALOG OUTPUTS Pin Pin Description Output A Normally Open NO Output D Normally Open NO Out...

Страница 67: ...GF868 PRNT LOG SCREEN CAL HELP P V I H CLR O DISP Q PROG W J EXIT 6 N U 3 0 S 1 Y 4 L R X K ENT T 2 Z 5 M B A C G 9 7 E D 8 F Handle Mounting Holes Mounting Holes Main Keypad Console Keys Function Key...

Страница 68: ...Appendix C Optional Enclosures DigitalFlow GF868 Startup Guide 1 and 2 Channel 58...

Страница 69: ...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 dir...

Страница 70: ...x D Measuring P and L Dimensions 60 DigitalFlow GF868 Startup Guide 1 and 2 Channel Figure 17 Top View of Transducer Installations Pipe O D L P T Pipe Thickness L T P CL 180 Installation Bias 90 Insta...

Страница 71: ...s 12 Flow Accuracy 41 Flow Computer 44 Function Keys 36 Fuse Ratings 42 H Hardware Configuration 41 I Initial Setup Data Table 50 Input Output Specifications 43 Installation Instructions for CE Mark C...

Страница 72: ...tional 44 Range 41 Rangeability 42 Repeatability 42 Transducer Flowcell 45 Standard Outputs 43 Storage Temperature 41 Symbols Locator Bar 36 SYSTM Submenu 24 for 1 Channel Meter 24 for 2 Channel Meter...

Страница 73: ...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 comp...

Страница 74: ...Warranty 64 DigitalFlow GF868 Startup Guide 1 and 2 Channel no content intended for this page...

Страница 75: ...entries must be sealed using a suitably certified threaded plug Modifications to any flameproof enclosure are not permitted The apparatus must be de energized before opening servicing and conducting...

Страница 76: ...unted for process temperatures up to 85 C and will be remotely mounted for process temperatures exceeding 85 C Markings Markings appear on the instrument label which identifies the product model seria...

Страница 77: ...1326 2 3 2006 EN 61010 1 2012 Overvoltage Category II Other standards Used EN 50014 1997 A1 A2 EN 50018 2000 A1 following the provisions of the 2004 108 EC EMC 2006 95 EC Low Voltage and 94 9 EC ATEX...

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Страница 80: ...ertified Company www ge mcs com en about_us quality html 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...

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