GE DigitalFlow GC868 Page 70 Service Manual Download

Page: 70 / 75

Index

April 2008

Index

Acceleration Error - E6 . . . . . . . . . . . . . . . . . 2-3
Alarms Option Card, Testing . . . . . . . . . . . . 1-11
Amplitude Error - E5 . . . . . . . . . . . . . . . . . . . 2-3
Analog Inputs Option Card, Calibrating . . . . 1-6
Analog Output Error - E7. . . . . . . . . . . . . . . . 2-3
Analog Outputs (Slot 0)

As Calibrated Current Source . . . . . . . . . . 1-6
Calibrating . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Linearity . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Analog Outputs Option Card

Calibrating . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Linearity . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Bracket, Option Card . . . . . . . . . . . . . . . . . . . 4-5

Cable

Backlight . . . . . . . . . . . . . . . . . . . . . . 4-3, 4-8
Display . . . . . . . . . . . . . . . . . . . . . . . . 4-3, 4-6
Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Calibrating

See Parameter Name

Calibration Menu, Entering . . . . . . . . . . . . . . 1-1
Circuit Board

See Printed Circuit Board

Contamination, Gas . . . . . . . . . . . . . . . . . . . . 3-4
Corrosion, Transducers . . . . . . . . . . . . . . . . . 3-6

Diagnostic Parameters

Table of Values . . . . . . . . . . . . . . . . . . . . . A-3

Diagnostic Parameters, Table . . . . . . . . . . . . .3-2
Diagnostics Menu

Entering. . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Exiting. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4

Display

Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
LCD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Replacing . . . . . . . . . . . . . . . . . . . . . . . . . .4-6

Display Screen

Error Message . . . . . . . . . . . . . . . . . . . . . . .2-1
Illustration . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

EPROM

Replacing . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
User Program . . . . . . . . . . . . . . . . . . . . . . .4-4

Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
Error Message, Display Screen. . . . . . . . . . . .2-1
Expansion Slots. . . . . . . . . . . . . . . . . . . . . . . .1-1

Flowcell Problems

Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5

Fuse

Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Replacing . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

Gas

Contamination. . . . . . . . . . . . . . . . . . . . . . .3-4
Physical Requirements . . . . . . . . . . . . . . . .3-4
Problems . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
Soundspeed . . . . . . . . . . . . . . . . . . . . . . . . .3-5

Grounding Strap . . . . . . . . . . . . . . . . . . . . . . .4-7
Guides, Option Card . . . . . . . . . . . . . . . . . . . .4-5

Summary of Contents for DigitalFlow GC868

Page 1: ...GE Sensing Inspection Technologies DigitalFlow GC868 Panametrics Gas Clamp On Ultrasonic Flowmeter Service Manual 1 and 2 Channel ...

Page 2: ...metrics Gas Clamp On Ultrasonic Flowmeter Service Manual 1 and 2 Channel 910 226SF1 April 2008 The DigitalFlow GC868 is a GE Panametrics product GE Panametrics has joined other GE high technology businesses under a new name GE Sensing Inspection Technologies ...

Page 3: ...e and warranties arising from course of dealing or usage or trade Return Policy If a GE Sensing Inc instrument malfunctions within the warranty period the following procedure must be completed 1 Notify GE 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 will issue a RETURN AUTH...

Page 4: ...alibration Menu 1 9 Probe Option F1 1 9 Numer Option F2 1 10 Testing the Alarm Relays 1 11 Accessing the Calibration Menu 1 11 Testing the Totalizer Frequency Outputs 1 13 Accessing the Calibration Menu 1 13 Entering Frequency 1 13 Entering Pulse Number 1 14 Chapter 2 Error Codes and Screen Messages Introduction 2 1 E0 No Error 2 2 E1 Low Signal 2 2 E2 Sound Speed Error 2 2 E3 Velocity Range 2 2 E...

Page 5: ...e EPROM 4 4 Installing an Option Card 4 5 Replacing the LCD Display 4 6 Installing the Printed Circuit Board 4 7 Spare Parts 4 9 Appendix A Service Record Introduction A 1 Data Entry A 1 Diagnostic Parameters A 3 Appendix B Optional Enclosures Introduction B 1 Rack Mount Enclosure B 1 Rack Mount Fuse Replacement B 2 Rack Mount Option Card Installation B 3 Rack Mount EPROM Replacement B 5 Rack Moun...

Page 6: ...Chapter 1 ...

Page 7: ...tion Introduction 1 1 Menu Map 1 1 Calibrating the Analog Outputs 1 2 Calibrating the Analog Inputs 1 6 Calibrating the RTD Inputs 1 9 Testing the Alarm Relays 1 11 Testing the Totalizer Frequency Outputs 1 13 ...

Page 8: ...on slot as Slot x where x is a number from 0 6 See Chapter 1 Installation of the Startup Guide for a complete description of the available option cards and the procedures for wiring them Menu Map The Calibration Menu is accessed by pressing the CAL key on the keypad Use this menu to calibrate and test the Slot 0 analog outputs as well as to calibrate and test any option cards that are installed in...

Page 9: ...es for each output must be calibrated After calibrating the outputs which have a resolution of 5 0 μA 0 03 full scale their linearity should be tested Note The zero point of the analog output may be set for either 0 mA or 4 mA However the calibration procedure always uses the 4 mA point as the meter will extrapolate from this value to obtain the 0 mA point Prepare for the calibration procedure by ...

Page 10: ...t the ammeter to the appropriate pins on terminal block I O Refer to Figure 1 1 on page 1 2 or Figure 1 2 above for correct pin numbers Calibrating the Low End of the Output Range 1 Press F1 to calibrate the low end of the output range 2 Press F1 or F2 to adjust the ammeter reading UP or DOWN until a 4 mA reading is achieved If you press F3 Numer enter a numeric value for the calibration point and...

Page 11: ...section if the linearity test will not be performed at this time Proceed to Procedure Options on the next page Testing the Analog Output Linearity Note If you exited this menu and are returning follow steps 1 through 3 in Accessing the Calibration Menu on page 1 3 1 Press F3 to TEST the linearity of the currently selected analog output 2 Check the ammeter reading at the 50 output level 3 Then ente...

Page 12: ...analog output Do one of the following To calibrate or test another output press F4 EXIT and return to Step 3 in Accessing the Calibration Menu on page 1 3 To calibrate test additional slots press F4 EXIT twice and proceed to the appropriate section To leave the Calibration Menu press F4 EXIT three times Table 1 1 Expected Ammeter Readings Full Scale 4 20 mA Scale 0 20 mA Scale 0 4 000 0 000 10 5 6...

Page 13: ...ource is not available one of the Slot 0 analog outputs may be used for the calibration During the analog input calibration the Slot 0 analog output will supply the low reference high reference 4 mA and 20 mA signals at the appropriate times Note If a Slot 0 analog output is used to calibrate the analog inputs make sure that the Slot 0 analog output calibration procedure has already been completed...

Page 14: ... Fx to select the desired input The procedure for calibrating Input A is identical to that for calibrating Input B However when calibrating Input B be sure a calibrated current source is connected to the appropriate pins on the terminal block See Figure 1 3 on page 1 6 for the correct pin numbers To calibrate a 0 4 20 mA input card see the section below Note To calibrate an RTD input card refer to...

Page 15: ... as shown in Figure 1 3 on page 1 6 2 Press F1 to store the current 4 mA value or press F2 to cancel the entry In either case the ANALOG INPUT prompt reappears 3 Press F4 to proceed to the next section 20 mA Option F4 1 Connect the 20 mA current source to the currently selected analog input as shown in Figure 1 3 on page 1 6 2 Press F1 to store the current 20 mA value or press F2 to cancel the ent...

Page 16: ... F1 to select Input A or F2 to select Input B Set Point Temperature 4 Press F1 to enter the set point temperature formerly known as the zero point This temperature should be at the low end of your expected operating range 5 Enter the desired set point temperature and press ENT 6 Press F1 to STORE the entered temperature or F2 to ABORT the calibration In either case the screen returns to the ANALOG...

Page 17: ...The RTDs Submenu to obtain point values at your set point and slope point 1 Press F1 to select Input A or F2 to select Input B Set Number 2 Press F1 to enter the set number formerly known as the zero point 3 Enter the set point temperature and press ENT 4 The program then asks for the set point number Enter the points measured at the set temperature and press ENT Slope Number 5 Press F2 to enter t...

Page 18: ...n in Figure 1 4 below Refer to the menu map in Figure 1 6 on page 1 15 as a guide Figure 1 4 Typical Ohmmeter Connections For this discussion assume that the option card has been installed in Slot x Accessing the Calibration Menu 1 Press the CAL key to enter the Calibration Program 2 Press Fx to calibrate the desired slot The option bar will include a slot listing for each installed option card 3 ...

Page 19: ...on card terminal block 4 Pressing F1 CLOSE should yield an ohmmeter reading of about zero Pressing F2 OPEN should yield an infinite ohmmeter reading 5 Press F3 to EXIT 6 Repeat the above procedure until both the normally open and normally closed contacts for all three alarm relays have been tested Then proceed to Procedure Options below Procedure Options You have completed testing the alarm relays...

Page 20: ...ge 1 15 as a guide Figure 1 5 Frequency Counter Connections For this discussion assume that the option card has been installed in Slot x Accessing the Calibration Menu 1 Press the CAL key to enter the Calibration Program 2 Press Fx to calibrate the desired slot The option bar will include a slot listing for each installed option card 3 Press F1 F4 to select output A B C or D respectively Entering ...

Page 21: ...cy 6 Repeat Steps 3 4 and 5 to test all four of the frequency totalizer outputs If any of the outputs fails to pass the test contact the factory for assistance Procedure Options You have completed testing the totalizer frequency outputs Do one of the following To calibrate test additional slots press F4 EXIT and proceed to the appropriate section To leave the Calibration Menu press F4 EXIT twice ...

Page 22: ...2 4 mA 20 mA F3 F4 Numer STORE F1 F2 A B Slot x Outputs ANALOG OUTPUT F1 F2 UP DOWN F1 ABORT Analog Outputs Full Scale Numeric CALIBRATING F3 F4 C D F4 F1 20 mA EXIT F1 F3 aLOW 4 mA F1 STORE F1 F2 A B Slot x Inputs ANALOG INPUT F2 ABORT Analog Inputs LOW REF F2 aHIGH F1 STORE F2 ABORT HIGH REF CALIBRATING F1 F2 A B F1 F2 Set Slop F1 F2 Probe Numer Slot x Inputs F1 F2 SetPt Slope RTD Inputs Set Pro...

Page 23: ...Chapter 2 ...

Page 24: ... E3 Velocity Range 2 2 E4 Signal Quality 2 3 E5 Amplitude Error 2 3 E6 Cycle Skip Accel 2 3 E7 Analog Out Error 2 3 E8 Temp In 2 3 E9 Press In 2 4 E10 Special Input 2 4 E11 Not Used 2 4 E12 Not Used 2 4 E13 Over Range 2 4 E14 Totals Overflow 2 4 E15 Equation Limit 2 4 E16 High Signal 2 5 Screen Messages 2 5 ...

Page 25: ...GC868 error code messages are discussed in this chapter along with the possible causes and the recommended actions When an error code is generated it will appear on the active pane of the display screen in the location shown in Figure 2 1 below Figure 2 1 A Typical Display Screen Note For a 2 Channel Model GC868 the channel number is displayed in front of the error message Only the error message a...

Page 26: ...above Also check the value programmed into the PIPE or SETUP SIGNL submenu as described in the Operator s Manual E2 Sound Speed Error Problem The sound speed exceeds the limits programmed in the SETUP SIGNL submenu of the User Program Cause The error may be caused by incorrect programming poor flow conditions wrong transducer spacing or poor coupling Action Compare the measured sound speed to tabu...

Page 27: ...s may be present in the pipe The problem could also be caused by excessive turbulence levels or rapid pressure variations Action Refer to Chapter 3 Diagnostics to correct any flowcell problems E6 Cycle Skip Accel Problem The acceleration exceeds the limits programmed in the SETUP submenu of the User Program Cause This condition is usually caused by poor flow conditions or improper transducer spaci...

Page 28: ...nge Problem This error code message indicates that the present measurement exceeds the capacity of the meter Cause An internal mathematical overflow has occurred in either the volumetric or mass flow calculations Action Select larger measurement units or a shorter time interval for the current measurement parameter For example choose KSCF M instead of SCF M See the Startup Guide for instructions E...

Page 29: ...ROM sum at the initial power up and periodically thereafter FRIGID_INIT Executed The NVR non volatile RAM was automatically initialized due to a memory fault Contact the factory NVR FAIL The non volatile RAM has failed Contact the factory NVR OK The non volatile RAM has passed Measurement Mode Messages All Logs Cleared hit key This message may appear during one of the following tasks 1 clearing a ...

Page 30: ... that the calibration of the analog output is invalid Hit any key to clear the message and the GC868 will default to the last valid calibration The message will also appear if there is no ammeter connected to the analog output during calibration Overflow The display value overflowed Reduce the number of decimal digits or change the units P L Enter L again The entered path length P is less than the...

Page 31: ...Chapter 3 ...

Page 32: ...Diagnostics Introduction 3 1 Displaying Diagnostic Parameters 3 1 Diagnostic Record 3 4 Flowcell Problems 3 4 Transducer Problems 3 6 ...

Page 33: ...ment mode display See Chapter 2 Displaying Data in the Programming Manual for instructions on setting the display screen to the desired format and enter the Diagnostics Menu as shown below 1 For a 2 channel GC868 press the or keys until the desired channel option appears on the option bar Press the appropriate Fx key to select this option Note For a 1 Channel Model GC868 the above prompt does not ...

Page 34: ...n upstream and downstream transit times N A 30 nsec REYN Reynolds Displays the Reynolds number 100 000 000 N A Tot K K Re MultiK KFactor Displays the combination of all K factors N A N A PEAK PEAK Displays the percentage of peak set to 80 by default N A N A Qup UP Signal Q Displays the signal quality for the upstream transducer Š 1 200 400 to 400 Qdown DN Signal Q Displays the signal quality for t...

Page 35: ...calculated signal timing offset in the skan signal measurement N A N A Vinst Vinst Ft s Displays the instantaneous velocity for comparison with Vel without averaging N A N A THETA Theta 3 degrees Displays the angle of the ultrasonic signal inside the pipe N A N A CEE1 CEE1 Displays the speed of sound in the transducer clamp on only N A N A SNRup UP Signal noise Displays the signal noise ratio for ...

Page 36: ...s Read the following sections carefully to determine if the problem is indeed related to the flowcell If the instructions in this section fail to resolve the problem contact the factory for assistance Gas Problems Most gas related problems result from a failure to observe the flowmeter system installation instructions as described in the Startup Guide Refer to Chapter 1 Installation of the Startup...

Page 37: ...r from a failure to observe the installation instructions as described in the Startup Guide or from improper programming of the meter By far the most common pipe problems are the following 1 The collection of material at the transducer location s Accumulated debris at the transducer location s will interfere with transmission of the ultrasound signals As a result accurate flow rate measurements ar...

Page 38: ... must be replaced Contact the factory for information on transducers in materials suitable for the application 3 INTERNAL DAMAGE An ultrasonic transducer consists of a ceramic crystal bonded to the transducer case The bond between the crystal and the case or the crystal itself may be damaged by extreme mechanical shock and or temperature extremes Also the internal wiring can be corroded or shorted...

Page 39: ...Chapter 4 ...

Page 40: ... Introduction 4 1 Fuse Replacement 4 2 Removing the Printed Circuit Board 4 3 Replacing the EPROM 4 4 Installing an Option Card 4 5 Replacing the LCD Display 4 6 Installing the Printed Circuit Board 4 7 Spare Parts 4 9 ...

Page 41: ...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 GC868 An aluminum shroud over the printed circuit board shields the electrical components and serves as a location for the wiring diagram label All of the procedures discussed in...

Page 42: ...lder cap counterclockwise about 1 4 turn The fuse holder cap with the captive fuse will be ejected from the fuse holder 5 Replace the defective fuse with a new one of the same rating and type Use only 1 1 4 x 1 4 Slo Blo fuses having a rating as indicated in Table 4 1 below and on the wiring diagram label 6 Press the new fuse into the fuse holder cap and insert the fuse into the fuse holder While ...

Page 43: ...circuit board 4 Using a 3 8 in nutdriver or open end wrench remove the three short standoffs along the left side of the main circuit board and the three long standoffs along the right side of the main circuit board 5 While supporting the printed circuit board remove the two screws or standoffs along the bottom edge of the printed circuit board Note For an LVD compliant meter with the clear plastic...

Page 44: ...software version To replace the EPROM complete the following steps 1 Remove the printed circuit board as described in a previous section of this chapter 2 Place the printed circuit board face down on a clean flat surface Locate the EPROM socket at the top left corner of the board Caution The EPROM is easily damaged by static electricity Before handling the new chip touch a grounded metal object to...

Page 45: ...l hardware in some older meters In either case they may be discarded as new plastic snap rivets are provided 3 There are six 32 pin option card sockets J41 J46 on the rear of the printed circuit board To install an option card insert its 32 pin connector into any available option card socket and gently press the card into place Make sure that the pins in the connector are straight and properly ali...

Page 46: ...w LCD display assembly over the mounting studs on the console cover and fasten it in place with the four standoffs Make sure that the LCD display assembly is oriented as shown in Figure 4 2 on page 4 11 Caution Do not overtighten the standoffs or the display assembly may be damaged 5 Position the LCD display cables between the two right side mounting studs and install the display shroud over the m...

Page 47: ...s that were marked during removal oriented toward the top of the printed circuit board 2 Carefully position the printed circuit board up against the eight standoffs in the enclosure Do not damage the transformers and any installed option cards as they are maneuvered between the standoffs 3 Loosely install the three long standoffs on the right side of the printed circuit board and the two standoffs...

Page 48: ...ith the clear plastic shroud over the electrical connectors there will be standoffs in the two mounting locations along the bottom edge of the printed circuit board For meters not equipped with this shroud there will be Phillips head screws in these two locations 9 For LVD compliant units position the clear plastic LVD shroud over the electrical connections so that the two holes in the shroud alig...

Page 49: ...omponents are obtained be sure to specify the serial number of the Model GC868 at the time of purchase Table 4 2 Spare Parts List Part Number Description 703 1127 02 Option Card Alarms Hermetically Sealed 703 1127 03 Option Card Alarms General Purpose 703 1442 02 Option Card Analog Inputs 703 1326 02 Option Card Analog Outputs 703 1442 03 Option Card RTD Inputs 703 1144 02 Option Card Totalizer Fr...

Page 50: ...ypad Cable Backlight Cable Mounting Screw 8 places Main Shroud Option Cards Fuse Holder Cap Card Guide Metal Bracket Main Shroud Option Card Socket Metal Bracket Fasteners Option Card Standoffs typ LVD Shroud Screw 8 places PC Board Standoffs LCD Display Display Shroud Nuts Washers Bottom View Side View Front View LVD Shroud Fuse Holder Power Connector PC Board Ground Wire Cover Ground Wire Intern...

Page 51: ...ws or Standoffs Short Standoff 3 places Vertical Components Long Standoff 3 places Metal Bracket Option Card Connectors Fasteners typ Display Connector J52 Keypad Connector J50 EPROM U4 Beveled Corner Front View Rear View PC Board Ground Wire G N L2 L1 AC G DC Figure 4 2 Standard Model GC868 Printed Circuit Board Assembly ...

Page 52: ...Appendix A ...

Page 53: ...Service Record Introduction A 1 Data Entry A 1 Diagnostic Parameters A 3 ...

Page 54: ... should be recorded in this appendix An accurate service history of the meter can prove very helpful in troubleshooting any future problems Data Entry Record complete and detailed service data for the Model GC868 in Table A 1 below Make additional copies of the table as needed Table A 1 Service Record Date Description of Service Performed By ...

Page 55: ...April 2008 A 2 Service Record Table A 1 Service Record Continued Date Description of Service Performed By ...

Page 56: ...es for the diagnostic parameters should be entered in Table A 2 below Table A 2 Diagnostic Parameters Parameter Initial Current Parameter Initial Current SS up Mw SS do AcVOL SNDSP StVOL Tup Tu S Tdown Td S DELTA DT S PEAK Tu M Qup Td M Qdown DT M AMPup ToffS AMPdn Vinst CNTup THETA CNTdn CEE1 P up SNRup P dn SNRdn TEMP S MDT PRES available only in Skan Measure mode ...

Page 57: ...Appendix B ...

Page 58: ...uction B 1 Rack Mount Enclosure B 1 Rack Mount Fuse Replacement B 2 Rack Mount Option Card Installation B 3 Rack Mount EPROM Replacement B 5 Rack Mount LCD Display Replacement B 6 Rack Mount Printed Circuit Board Replacement B 7 ...

Page 59: ...g any maintenance procedures disconnect the main power from the unit 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 GC868 Rack Mount Enclosure Refer to Fi...

Page 60: ...m of the power cord receptacle and pull it straight out 3 Replace the defective fuse with a new one of the same rating and type Use only 5 x 20 mm Slo Blo fuses having a rating as indicated in Table B 1 below and on the rear panel label 4 Reinstall the black plastic fuse cover and insert the power cord back into the receptacle Then position the power switch in the ON position The Model GC868 flowm...

Page 61: ...e metal bracket to the printed circuit board Lift the metal bracket straight up and away from the printed circuit board Note The fasteners may be either plastic snap rivets or metal hardware in some older meters In either case they may be discarded as new plastic snap rivets are provided 3 There are six 32 pin option card sockets J41 J46 on the rear of the printed circuit board By removing the scr...

Page 62: ...80 out of position Secure the metal bracket to the printed circuit board with the four plastic snap rivets provided 7 After checking for any loose hardware that may have fallen into the enclosure reinstall the top panel on the meter and secure the panel in place with the four screws previously removed The Model GC868 flowmeter may now be placed back into service Reconnect the main power and refer ...

Page 63: ... notches at opposite corners of the socket Gently pry the EPROM up a little at a time at each notch until it comes free Caution The EPROM is easily damaged by static electricity Before handling the new chip touch a grounded metal object to discharge any built up static electricity and avoid touching the leads on the side of the chip 3 Make sure that the beveled corner on the new EPROM is aligned w...

Page 64: ...Place the new display in the enclosure and replace the circuit board connections of the data and power cables of the old display with those of the new display Be sure to orient the new cables in the same way as the old ones when making the connections to the printed circuit board Remove and discard the old LCD display 5 Place the new LCD display assembly over the mounting studs on the front panel ...

Page 65: ...ions in this section to replace the defective board with a new one Circuit Board Removal Refer to Figure B 2 on page B 11 and complete the following steps 1 After disconnecting the main power to the meter remove the top panel from the enclosure by removing the four screws indicated WARNING The main power to the Model GC868 must be disconnected before proceeding 2 Disconnect all external option car...

Page 66: ... printed circuit board out of the enclosure Proceed to the next section for instructions on installing the new printed circuit board Circuit Board Installation Refer to Figure B 2 on page B 11 and complete the following steps 1 Position the new printed circuit board within the electronics console so that it rests on the six standoffs in the base of the enclosure and the option card sockets are loc...

Page 67: ...ead colors should be green white and black from left to right as viewed from the front of the enclosure 7 Reinstall all option cards as described earlier in this chapter Insert all external option card connectors at the rear panel of the meter 8 After checking for any loose hardware that may have fallen into the enclosure reinstall the top panel on the meter and secure the panel in place with the ...

Page 68: ...es B 10 GC868 19 00 483 18 25 464 2 25 57 5 22 133 11 37 289 11 82 300 13 13 333 4 19 106 15 70 399 3 31 84 14 83 377 16 99 432 A OUT ALARMS A IN RTD IN Fuse Figure B 1 Model GC868 Rack Mount Enclosure Dimensions ref dwg 712 1076 ...

Page 69: ...Transducer Connector CH2 Transducer Connector EPROM U4 PCB Mounting Screw typ Printed Circuit Board Option Card Bracket Option Card Socket typ RS232 Connector Ground Lead Green Option Card Slot Cover Snap Rivets typ Beveled Corner Top Panel Mounting Hole Power Terminal Block Line Lead Black Neutral Lead White Fuse 4 places Figure B 2 Model GC868 Rack Mount Console Assembly ref dwg 705 849 ...

Page 70: ...Name Calibration Menu Entering 1 1 Circuit Board See Printed Circuit Board Contamination Gas 3 4 Corrosion Transducers 3 6 D Diagnostic Parameters Table of Values A 3 Diagnostic Parameters Table 3 2 Diagnostics Menu Entering 3 1 Exiting 3 4 Display Cable 4 3 LCD 4 6 Replacing 4 6 Display Screen Error Message 2 1 Illustration 2 1 E EPROM Replacing 4 4 User Program 4 4 Error Codes 2 2 Error Message ...

Page 71: ... RTD Option Card 1 9 Problems Transducers 3 6 R Reboot Automatic 1 1 Replacing See Part Name RTD Option Card Calibrating 1 9 S Screen Messages Table 2 5 Service Record A 1 Shroud Aluminum 4 1 4 8 LCD Display 4 6 LVD 4 8 Plastic 4 8 Signal Quality Error E4 2 3 Sockets Option Card 4 5 Soundspeed Error E2 2 2 Gas 3 5 Spare Parts List 4 9 Special Input Error E10 2 4 T Temperature Input Error E8 2 3 To...

Page 72: ...hat the GC868 Gas Clamp On Ultrasonic Flowmeter to which this declaration relates are in conformity with the following standards EN 61326 1998 Class A Annex A Continuous Unmonitored Operation EN 61010 1 1993 A2 1995 Overvoltage Category II Pollution Degree 2 following the provisions of the 89 336 EEC EMC Directive and the 73 23 EEC Low Voltage Directive Shannon June 1 2002 Mr James Gibson GENERAL ...

Page 73: ...C868 Gas Clamp On Ultrasonic Flowmeter rélatif á cette déclaration sont en conformité avec les documents suivants EN 61326 1998 Class A Annex A Continuous Unmonitored Operation EN 61010 1 1993 A2 1995 Overvoltage Category II Pollution Degree 2 suivant les régles de la Directive de Compatibilité Electromagnétique 89 336 EEC et de la Directive Basse Tension 73 23 EEC Shannon June 1 2002 Mr James Gib...

Page 74: ...er Verantwortung daß die Produkte GC868 Gas Clamp On Ultrasonic Flowmeter folgende Normen erfüllen EN 61326 1998 Class A Annex A Continuous Unmonitored Operation EN 61010 1 1993 A2 1995 Overvoltage Category II Pollution Degree 2 gemäß den Europäischen Richtlinien Niederspannungsrichtlinie Nr 73 23 EG und EMV Richtlinie Nr 89 336 EG Shannon June 1 2002 Mr James Gibson GENERALDIREKTOR ...

Page 75: ...USA 1100 Technology Park Drive Billerica MA 01821 4111 Web www gesensing com Ireland Sensing House Shannon Free Zone East Shannon Co Clare Ireland ...

Search results

Summary of Contents for DigitalFlow GC868

Reviews:

Related manuals for DigitalFlow GC868

Brands by name

Popular brands

GE DigitalFlow GC868, Service Manual

Search results

Summary of Contents for DigitalFlow GC868

Reviews:

Related manuals for DigitalFlow GC868

Brands by name

Popular brands