Baker Hughes DigitalFlow XGF868i User manual

DigitalFlow™ XGF868i
Panametrics flare gas
flow transmitter
Service manual

ii

DigitalFlow™ XGF868i
Panametrics flare gas flow transmitter
Service manual
910-198S Rev. C
January 2014
iii

iv

Information paragraphs
Note: These paragraphs provide information that provides a
deeper understanding of the situation, but is not essential to
the proper completion of the instructions.
IMPORTANT:
These paragraphs provide information emphasizing
instructions which are essential to proper setup of the
equipment. Failure to follow these instructions carefully
may cause unreliable performance.
WARNING!
Indicates a potentially hazardous situation
which can result in serious personal injury or
death, if it is not avoided.
CAUTION!
Indicates a potentially hazardous 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 attention to situations or
operations that could be dangerous to you
and other persons operating the equipment.
Read these messages and follow the
instructions carefully.
Safety issues
WARNING!
It is 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.
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.
v

Environmental compliance
Waste Electrical and Electronic Equipment (WEEE) Directive
Baker Hughes-Digital Solutions is an active participant in
Europe’s Waste Electrical and Electronic 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 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 https://www.bakerhughesds.com/health-safety-and-
environment-hse for more information about this initiative.
vi

Contents
Chapter 1. Calibration....................................................................1
1.1 Introduction ......................................................................................1
1.2 Accessing the calibration menu ..................................................................1
1.3 Calibrating and testing the analog outputs ......................................................2
1.3.1 Preparing for calibration ..................................................................................2
1.3.2 Calibrating the low end of the output range ..............................................................2
1.3.3 Calibrating the high end of the output range .............................................................2
1.3.4 Testing output linearity....................................................................................3
1.4 Calibrating the analog inputs....................................................................4
1.4.1 Preparing for calibration ..................................................................................4
1.4.2 Accessing the calibration/test menu .....................................................................4
1.5 Calibrating the RTD inputs .......................................................................5
1.5.1 Preparing for calibration ..................................................................................5
1.5.2 Accessing the calibration/test menu .....................................................................5
1.5.3 Entering the set point .....................................................................................5
1.5.4 Entering the slope.........................................................................................5
1.6 Testing the frequency outputs ...................................................................6
1.6.1 Preparing for testing ......................................................................................6
1.6.2 Testing the output.........................................................................................6
Chapter 2. Error codes ..................................................................9
2.1 Introduction .....................................................................................9
Chapter 3. Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Introduction .....................................................................................13
3.2 Displaying diagnostic parameters .............................................................. 14
3.3 Flowcell problems................................................................................17
3.3.1 Gas problems............................................................................................17
3.3.2 Pipe problems............................................................................................17
3.4 Transducer problems ........................................................................... 18
Chapter 4. Parts replacement ......................................................... 19
4.1 Introduction .................................................................................... 19
4.2 Removing the circuit board assembly...........................................................20
4.3 Replacing the LCD display/interconnect board subassembly ....................................21
4.4 Replacing the fuse ...............................................................................21
4.5 Replacing the user program ....................................................................22
4.6 Installing an option card ........................................................................23
4.6.1 Attaching an optional heat sink to an I/O option card .................................................. 23
4.7 Assembling/installing the circuit board assembly ..............................................24
4.7.1 Assembling the circuit board assembly ................................................................ 24
4.7.2 Installing the circuit board assembly ...................................................................25
vii

Appendix A. Service record ............................................................ 31
A.1 Introduction .....................................................................................31
A.2 Data entry .......................................................................................31
A.3 Diagnostic parameters .........................................................................33
Appendix B. Calibration and testing with PanaView ....................................35
B.1 Introduction ....................................................................................35
B.2 Accessing the calibration/test menu............................................................36
B.3 Calibrating slot 0 analog outputs ...............................................................37
B.4 Calibrating slot 1 option cards...................................................................38
B.4.1 Analog outputs .........................................................................................38
B.4.2 Analog inputs ...........................................................................................39
B.4.3 RTD Inputs...............................................................................................39
B.4.4 Entering the set point ...................................................................................40
B.4.5 Entering the slope.......................................................................................40
B.4.6 Testing frequency outputs ..............................................................................40
B.5 Testing the XGF868i software and hardware .................................................... 41
B.5.1 Uploading the signal array Data .........................................................................41
B.5.2 Uploading the XGF868i memory ........................................................................42
B.5.3 Testing the XGF868i hardware ..........................................................................42
Appendix C. Factory tests..............................................................47
C.1 Introduction ....................................................................................47
C.2 Resetting the number of channels ..............................................................47
C.3 Resetting the XGF868i to factory defaults .......................................................47
viii

Chapter 1. Calibration
1.1 Introduction
Calibrating the XGF868i analog outputs and inputs is
explained in this chapter. In addition, testing the optional
totalizer, frequency and alarm relay outputs is discussed.
The chapter includes the following specific topics:
• Calibrating the slot 0 and slot 1 analog outputs
• Calibrating option card analog inputs
• Calibrating option card RTD inputs
• Testing option card frequency outputs
NOTE: Convention in this manual identifies any expansion
slot as slot x, where x is a number from 0-2. Slot 2 is used
only for data logging, MODBUS or HART option cards.
See Chapter 1, Installation, and Appendix B, Data
Records, in the Startup guide for a complete description
of the available option cards and the procedures for
wiring them.
1.2 Accessing the calibration menu
The calibration menu is accessible through the keypad
program, as well as through PanaView™ software. (If you
are using PanaView to calibrate the XGF868i, refer to
Appendix B.) Use this menu to calibrate and test the slot
0 analog outputs, as well as to calibrate and/or test any
option cards that are installed in expansion slot 1. Refer to
the menu maps in Figure 3 on page 7 as a guide in
following the calibration instructions.
1. Power up the XGF868i and wait until it has initialized.
2. Press the [escape], [enter], [escape] keys. The keypad
program appears on the screen.
3. Press the right arrow key to scroll to the calib menu.
Press [enter]. The cal window opens.
Proceed to the appropriate sections of this chapter
to calibrate and/or test any of the installed inputs
and/or outputs.
NOTE: The calibration menu never returns to the keypad
program. Pressing [escape] to exit the menu causes the
XGF868i to restart.
1

1.3 Calibrating and testing the analog outputs
Every XGF868i flowmeter includes two built-in analog
outputs (A and B) at terminal block J1, which is designated
as slot 0. Additional analog outputs may be added to the
Model XGF868i by installing an appropriate option card in
slot 1. This option card contains two analog outputs, which
are also designated as A and B.
Before beginning calibration, an ammeter must be
connected to the desired analog output. Both the
zero-point and full-scale values for all of these outputs
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 at
either 0 mA or 4 mA. However, the calibration always uses
the 4 mA point, as the meter extrapolates this value to
obtain the 0 mA point.
1.3.1 Preparing for calibration
Prepare for calibration by inserting an ammeter in series
with the load on the desired output. Refer to Figure 1
below and Figure 4 on page 8 to identify the OUT(+)
and RTN(-) pins for the desired output.
Magnetic
wand
ENTERESCAPE
DigitalFlow™ XGF868i
Figure 1: Ammeter connection (output A)
1.3.2 Calibrating the low end of the
output range
1. From the keypad program, press the right arrow key to
scroll to the calib menu. Press [enter].
2. In the cal menu, scroll to the slot 0 or slot 1 option, and
press [enter].
NOTE: The slot 1 option only appears in the menu if an option
card has been installed in this slot.
3. Scroll to either output A or output B to open the analog
output menu. (Output A will be used as an example in this
manual.) Press [enter].
IMPORTANT
The procedure for calibrating output B is identical to that
for calibrating output A. However, when calibrating output
B, be sure to reconnect the ammeter on terminal block J1.
See Figure 1 on page 2 for the correct pin numbers.
4. Scroll to 4 mA to calibrate the low end of the output
range. Press [enter].
5. Scroll to UP or DOWN to adjust the ammeter reading
UP or DOWN, until a 4 mA reading is achieved,
or
scroll to numer, and directly enter the mA reading.
In either case, press [enter] to confirm the entry.
6. Once you have achieved a 4 mA reading, scroll to
either store to store the calibration, or to abort
to exit the menu without storing the calibration.
In either case, press [enter].
NOTE: If the ammeter reading cannot be adjusted
within 5.0 µA of the 4 or 20 mA setting, contact the
factory for assistance.
1.3.3 Calibrating the high end of the
output range
1. The XGF868i returns to the analog output window.
Scroll to 20 mA, and repeat steps 4 and 5 to calibrate
the high end of the output range.
NOTE: Skip the following prompt, if linearity testing of the
output will not be performed at this time.
2

1.3.4 Testing output linearity
1. Scroll to test to test the linearity of the currently
selected analog output. Press [enter].
2. Check the ammeter reading at 50% full scale.
Then, use the arrow keys to enter a different
% full scale (0-100%). Press [enter] when done.
Table 1 below lists the expected ammeter readings
at various % full scale settings, for both 4-20 mA and
0-20 mA scales. Refer to this table to verify the accuracy
of the ammeter readings taken above.
Table 1: Expected ammeter readings
% full scale 4-20 mA scale* 0-20 mA scale*
04.000 0.000
10 5.600 2.000
20 7.200 4.000
30 8.800 6.000
40 10.400 8.000
50 12.000 10.000
60 13.600 12.000
70 15.200 14.000
80 16.800 16.000
90 18.400 18.000
100 20.000 20.000
* all ammeter readings should be ±0.005 mA
If the linearity test readings are not within 5µA of the
values listed in Table 1, check the accuracy and wiring of the
ammeter. Then, repeat the low and high end calibrations.
If the analog output still does not pass the linearity test,
contact the factory for assistance.
3. Scroll to exit and press [enter] to return to the cal menu.
Then choose another output to calibrate or press
[escape] to leave the calib menu.
This completes calibration of the slot 0 analog outputs.
Proceed to the appropriate section to calibrate additional
inputs/outputs.
3

1.4 Calibrating the analog inputs
Analog inputs may be added to the XGF868i by installing an
appropriate option card in slot 1. This option card contains
two or four analog inputs, which are designated as A, B, C
and D. Both the zero-point and full-scale values for each
input must be calibrated.
Calibration of the analog inputs requires the use of a
calibrated current source. If an independent calibrated
current source 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.
IMPORTANT
If a slot 0 analog output will be used to calibrate the
analog inputs, the slot 0 analog output calibration
procedure must be completed first.
1.4.1 Preparing for calibration
Prepare for the calibration procedure by connecting a slot
0 analog output (or an independent calibrated current
source) to the desired input on the option card. See Figure
4 on page 8 to identify the IN(+) and RTN(-) pins for the
desired input on terminal block J2.
NOTE: The zero point of the analog input may be set for
either 0 mA or 4 mA. However, the calibration always uses
the 4 mA point, as the meter extrapolates this value to
obtain the 0 mA point.
1.4.2 Accessing the calibration/test menu
1. From the keypad program, press the right arrow key to
scroll to the calib menu. Press [enter].
2. In the cal window, scroll to slot 1. Press [enter].
3. Scroll to the desired input to open the ANALOG INPUT
menu. (Input A will be used as an example in this
manual.) Press [enter].
IMPORTANT
Calibrating input B, C or Dis identical to calibrating
input A. However, be sure to reconnect the current source
on terminal block J2. Refer to Figure 4 on page 8 for the
correct pin numbers.
4. Scroll to the appropriate option to select the reference
point to be calibrated. Press [enter].
IMPORTANT
The procedure for calibrating all the inputs is the same.
However, when calibrating a different input, be sure
to reconnect the current source at terminal block J2.
See Figure 4 on page 8 for the correct pin numbers.
5. Do one of the following:
• Proceed to the “4 mA option” below.
• Proceed to the “20 mA option” below.
1.4.2a 4 mA option
Set the calibrated current source to 4 mA.
• If you selected the 4 mA option in the ANALOG INPUT
menu, scroll to store to accept the current 4 mA value or
on abort to cancel the entry. Press [enter]. In either case,
the XGF868i returns to the analog input window.
1.4.2b 20 mA option
Set the calibrated current source to 20 mA.
• If you selected the 20 mA option in the ANALOG INPUT
option, scroll store to accept the current 20 mA value
or to abort to cancel the entry. Press [enter]. In either case,
the XGF868i returns to the ANALOG INPUT window.
• Press [escape] to return to the slot 1 window and
calibrate additional inputs/outputs, or press [escape]
again to close the calib menu.
4

1.5 Calibrating the RTD inputs
RTD analog inputs may be added to the XGF868i by installing an appropriate option card in slot 1. The option card contains
two or four RTD inputs that are designated as A, B, C and D. Both the set point and slope point values for each input must be
specified prior to use.
1.5.1 Preparing for calibration
Prepare for the calibration procedure by connecting
the RTD temperature transmitter to the desired input
(A, B, C or D) on the option card. See Figure 4 on page 8
to identify the RTD(+) and COM(-) pins for the desired
input on terminal block J2.
1.5.2 Accessing the calibration/test menu
1. From the keypad program, press the right arrow key to
scroll to the calib menu. Press [enter].
2. In the cal window, scroll to slot 1. Press [enter].
NOTE: The slot 1 option only appears at the above prompt if
an option card is installed in this slot.
3. Scroll to the desired input. (Input A will be used as an
example in this manual.) Press [enter].
IMPORTANT
When calibrating the other inputs, be sure to reconnect
the current source at terminal block J2. See Figure 4 on
page 8 for the correct pins.
1.5.3 Entering the set point
1. Before proceeding, place the RTD in a temperature
bath and allow it to stabilize at the desired set point
temperature.
2. Scroll to set to program the RTD set point. Press [enter].
3. Use the arrow keys to enter the desired set point
temperature and press [enter].
4. Scroll to store to accept the new set point value or abort
to cancel the entry. Press [enter].
1.5.4 Entering the slope
1. Scroll to slope to program the RTD slope point.
Press [enter].
2. Use the arrow keys to enter the desired slope point
temperature and press [enter].
3. Press store to accept the new slope point value
or abort to cancel the entry. Press [enter].
NOTE: If an error message appears, verify that the RTD
is at the programmed temperature. Also, if you replace
the set/slope range with a different range, be sure to
recalibrate the set and slope points.
Procedure options
This completes calibration of the slot 1 RTD input.
Do one of the following:
• To calibrate or test another input, press [escape]
and return to step 3 in Accessing the calibration/test
menu above.
• To leave the keypad program, press [escape] twice.
5

1.6 Testing the frequency outputs
Frequency outputs may be added to the XGF868i by installing an appropriate option card in slot 1. This option card contains
two or four frequency outputs, which are designated A, B, C and D.
1.6.1 Preparing for testing
Prepare for the testing procedure by connecting a frequency
counter to the desired output on the option card. See Figure
2below for frequency output wiring, and Figure 4 on page
8 to identify the OUT(+) and RTN(-) pins for the desired
output on terminal block J2.
OUT
RTN
IN
Common
Load
Volts -
(Common)
Volts +
(Int. Pwr. Sup.)
OUT
RTN
+5V
200Ω
Transmitter
Transmitter
Pulse Counter
Frequency Counter
Totalizer Output
Frequency Output
Figure 2: Totalizer and frequency output wiring
1.6.2 Testing the output
1. From the keypad program, press the right arrow key to
scroll to the calib menu. Press [enter].
2. In the cal window, scroll to slot 1. Press [enter].
NOTE: The slot 1 option only appears at the above prompt if
an option card is installed in this slot.
3. Scroll to the desired output. (Output A will be used as an
example in this manual.) Press [enter].
IMPORTANT
The procedure for testing all the outputs is the same.
However, when testing another output, be sure to
reconnect the frequency counter at terminal block J2. See
Figure 4 on page 8 for the correct pins.
4. Enter a frequency (between 1 and 10,000 Hz) and press
[enter].
5. Verify that the frequency counter reads the correct value.
Procedure options
This completes testing of the slot 1 frequency outputs. Do
one of the following:
• To test another of the available frequency outputs,
return to step 3 in testing the output above. If any of the
frequency outputs fails the test, contact the factory for
assistance.
• To calibrate/test additional inputs/outputs, proceed to the
appropriate section.
• To leave the keypad program, press [escape] twice.
6

Keypad Pgm.
[Esc][Enter][Esc]
PROG RESET CALIB CNTRS
NO YES
Reset Totals
See Programming Manual
DARKN LITEN
STORE ABORT
SLOT0SLOT1
UP DOWN NumerSTOREABORT
AB
4 mA 20 mA %TESTEXIT
ANALOG OUTPUT
Slot 0 Analog Outputs
CALIBRATING % Full Scale
UP DOWN NumerSTOREABORT
AB
4 mA 20 mA %TESTEXIT
ANALOG OUTPUT
Slot 1 Analog Outputs
CALIBRATING
mA Reading
% Full Scale
STOREABORT
AC
4 mA 20 mA
ANALOG INPUT
Slot 1 Analog Inputs
CALIBRATING
BD
press [EXIT] key
STOREABORT
AC
SetPt Slope
RTD INPUT
Slot 1 RTD Inputs
CALIBRATING
BD
press [EXIT] key
SLOPE TEMP.SET POINT TEMP.
AC
OPEN EXIT
ALARMS
Slot 1 Alarm Relays
BD
CLOSE
AC
Slot 1 Totalizer Outputs
BD
PULSES TIME
AC
Slot 1 Frequency Outputs
BD
FREQUENCY
NOTE: Plain text represents prompt area meassages
and boxed text represents option bar choices.
Fx represent function keys to select option bar choices.
Slot 1 Option Card
Numer
mA Reading
Figure 3: Calibration menu map
7

-01 (AA,HH) -02 (FF,TT,FT,CT,CF) -03 (FO,TO,CO) -04 (FA,FH,TA,TH,CA,CH) -05 (CI,TI,FI) -06 (CR,FR,TR) -07 (CIR)
-11 (AR,HR)
-09 (OI)
-08 (AI,HI)
-10 (OR) -12 (II) -13 (RR) -14 (IR) -15 (FHII) -16 (HART) -17 (HART/OI)
+HART/OUT-A
-HART/OUT-A
NC NC NC NC
OUT C - +24V
INPUT C - +
INPUT D - RTN
OUT D - +24V
INPUT D - +
INPUT C - RTN
.90
2.43
NOTES 1. MATERIAL: .003 THK (REF) MYLAR WITH REVERSE SCREENING,
AND 3M #467MP (OR EQUIVALENT) ADHESIVE BACKING.
2. MARKINGS: BACKGROUND - WHITE.
ALL MARKINGS PROCESS BLACK C.
3. ALL COLORS PER PANTONE MATCHING SYSTEM.
4. ALL DIMENSIONS PER -01. 5. ARTWORK CREATED IN ADOBE ILLUSTRATOR (FILE#: 442-615_N.AI) 6. ALL DIMENSIONS REFERENCE.
-18 (F(F)HH)
A-FREQ OUT
A-FREQ RTN
A-NC
B-FREQ OUT
B-FREQ RTN
B-NC
C-ALARM NO
C-ALARM COM
C-ALARM NC
D-ALARM NO
D-ALARM COM
D-ALARM NC
+HART/OUT-A
-HART/OUT-A
NC NC NC NC NC NC NC NC NC NC
A-FREQ. OUT
A-FREQ. RTN
A-NC
B-ALARM NO
B-ALARM COM
B-ALARM NC
C- +24V OUT
C-ANALOG IN+
C-ANALOG IN RTN
D- +24V OUT
D-ANALOG IN+
D-ANALOG IN RTN
RTD - A
COMM - A
COM - A
RTD - A
COMM - A
COM - A
RTD - B
COMM - B
COM - B
RTD - C
COMM - C
COM - C
RTD - D
COMM - D
COM - D
OUT A - +24V
INPUT A - +
INPUT A - RTN
OUT B - +24V
INPUT B - +
INPUT B - RTN
OUT C - +24V
INPUT C - +
INPUT C - RTN
OUT D - +24V
INPUT D - +
INPUT D - RTN
ALARM A - NO
ALARM A - COM
ALARM A - NC
ALARM B - NO
ALARM B - COM
ALARM B - NC
RTD - C
COMM - C
COM - C
RTD - D
COMM - D
COM - D
NC NC NC NC NC NC
RTD - C
COMM - C
COM - C
RTD - D
COMM - D
COM - D
ALARM A - NO
ALARM A - COM
ALARM A - NC
ALARM B - NO
ALARM B - COM
ALARM B - NC
ALARM C - NO
ALARM C - COM
ALARM C - NC
ALARM D - NO
ALARM D - COM
ALARM D - NC
OUT - A
RTN - A
NC
OUT - B
RTN - B
NC
OUT - C
RTN - C
NC
OUT - D
RTN - D
NC
OUT - A
RTN - A
NC
OUT - B
RTN - B
NC NC NC NC NC NC NC
OUT - A
RTN - A
NC
OUT - B
RTN - B
NC
ALARM C - NO
ALARM C - COM
ALARM C - NC
ALARM D - NO
ALARM D - COM
ALARM D - NC
OUT - A
RTN - A
NC
OUT - B
RTN - B
NC
OUT C - +24V
INPUT C - +
INPUT C - RTN
OUT D - +24V
INPUT D - +
INPUT D - RTN
OUT - A
RTN - A
NC
OUT - B
RTN - B
NC
RTD - C
COMM - C
COM - C
RTD - D
COMM - D
COM - D
OUT - A
RTN - A
NC
OUT - B
RTN - B
NC
OUT C - +24V
INPUT C - +
INPUT C - RTN
RTD - D
COMM - D
COM - D
ALARM A - NO
ALARM A - COM
ALARM A - NC
ALARM B - NO
ALARM B - COM
ALARM B - NC
OUT C - +24V
INPUT C - +
INPUT C - RTN
OUT D - +24V
INPUT D - +
INPUT D - RTN
NC NC NC NC NC NC
OUT C - +24V
INPUT C - +
INPUT C - RTN
OUT D - +24V
INPUT D - +
INPUT D - RTN
RTD - B
COMM - B
COM - B
OUT C - +24V
INPUT C - +
INPUT C - RTN
OUT D - +24V
INPUT D - +
INPUT D - RTN
-19 (HART/RI)
+HART/OUT-A
-HART/OUT-A
NC NC NC NC
RTD-A
COMM-A
COM-A
OUT D - +24V
INPUT D - +
INPUT D - RTN
-20 (A/GATE HART)
ALARM A-NO
ALARM A-COM
ALARM A-NC
ALARM B-NO
ALARM B-COM
ALARM B-NC
DRTN
GATE
NC
HART +
HART -
NC
-21 (FRI)
OUT - A
RTN - A
NC
OUT - B
RTN - B
NC
RTD - C
COMM - C
COM - C
OUT D +24v
INPUT D - +
INPUT D RTN
-22 (ORI)
NC NC NC NC
RTD-C
COMM-C
COM-C
OUT D - +24V
INPUT D - +
INPUT D - RTN
NC NC
Figure 4: Option card I/O connections
8

Chapter 2. Error codes
2.1 Introduction
The XGF868i ultrasonic flow transmitter is a reliable,
easy to maintain instrument. When properly installed
and operated, as described in the Startup guide, the
meter provides accurate flow rate measurements with
minimal user intervention. However, if a problem should
arise with the electronics enclosure, the transducers or
the flowcell, a built-in error code message system greatly
simplifies the troubleshooting process.
All of the possible XGF868i 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 LCD as shown in
Figure 5 below.
XGF868i
CH1 MASS
4500 LB/HR
Error Message
LCD Display
Exx
Figure 5: Error message location
If an error message appears during normal operation
of the Model XGF868i, refer to the appropriate section of
this chapter for instructions on how to proceed.
9

E0: No error
Problem: No error condition currently exists.
Cause: This message appears briefly to confirm that
the response to another error message has
corrected the problem.
Action: No action is required.
E1: Low signal
Problem: Poor ultrasonic signal strength or the
signal exceeds the limits entered via the
keypad program.
Cause: Poor signal strength may be caused by
a defective cable, a flowcell problem, a
defective transducer or a problem in the
electronics console. A signal that exceeds
the programmed limits is probably caused
by the entry of an improper value in the
channelx-set up-signal submenu of the
keypad program.
Action: Using the procedures in Chapter 3, Diagnostics,
check the components listed above. Also, check
the limit values entered into the channelx-set
up-signal submenu, as described in Chapter
1, Programming site data, of the Programming
manual.
E2: Sound speed error
Problem: The sound speed exceeds the limits
programmed in the channelx-set up-signal
submenu of the keypad program.
Cause: The error may be caused by incorrect
programming, poor flow conditions or poor
transducer orientation.
Compare the measured sound speed to
tabulated nominal values for the gas being
used and correct any programming errors.
Refer to Chapter 3, Diagnostics, to correct any
flowcell and/or transducer problems.
E3: Velocity range
Problem: The velocity exceeds the limits programmed
in the channelx-set up-signal submenu of the
keypad program.
Cause: This error may be caused by the entry of
improper programming data or by poor flow
conditions and/or excessive turbulence.
Action: Make sure the actual flow rate is within
±75 ft/sec (±23 m/sec). See Chapter 1,
Programming site data, in the Programming
manual for details. Refer to Chapter 3,
Diagnostics, to correct any flowcell and/or
transducer problems.
E4: Signal quality
Problem: The signal quality is outside the limits
programmed in the channelx-set up-signal
submenu of the keypad program.
Cause: The peak of the upstream or downstream
correlation signals has fallen below the
correlation peak limit, as set in the channelx-set
up-signal submenu. This may be caused by a
flowcell or electrical problem.
Action: Check for sources of electrical interference
and verify the integrity of the electronics
console by temporarily substituting a test
flowcell that is known to be good. Check the
transducers and relocate them, if necessary.
See Chapter 3, Diagnostics, for further
instructions.
E5: Amplitude error
Problem: The signal amplitude exceeds the limits
programmed in the channelx-set up-signal
submenu of the keypad program.
Cause: Excessive levels of an attenuating gas,
such as CO2, may be present in the flowcell.
Solid or liquid particulates may be present
in the flowcell.
Action: Refer to Chapter 3, Diagnostics, to correct
any flowcell problems.
E6: Cycle skip, accel.
Problem: The acceleration exceeds the limits
programmed in the channelx-set up-signal
submenu of the keypad program.
Cause: This condition is usually caused by poor flow
conditions or improper transducer alignment.
Action: Refer to Chapter 3, Diagnostics, to correct any
flowcell and/or transducer problems.
E7: Analog out error
Problem: The current in the analog output circuit
exceeds the limits for the analog output port.
Cause: The output load exceeds the specified limits
for the analog output port.
Action: Make sure the output load is <600 ohms for
the slot 0 analog outputs or is <1,000 ohms
for an analog outputs option card in slot 1.
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E8: Temperature in
Problem: This message indicates a temperature
input error.
Cause: The temperature exceeds the specified limits
for the analog/RTD inputs option card or no
input device is connected.
Action: Check the temperature transmitter and
the connecting cable. Refer to Chapter 1,
Calibration, and recalibrate the analog/RTD
inputs option card.
E9: Pressure in
Problem: This message indicates a pressure
input error.
Cause: The pressure exceeds the specified limits
for the analog inputs option card or no input
device is connected.
Action: Check the pressure transmitter and the
connecting cable. Refer to Chapter 1, Calibration,
and recalibrate the analog inputs option card.
E10: Special input
Problem: This message indicates a special
input error.
Cause: The special input exceeds the specified limits
for the analog inputs option card.
Action: Check the special input device and the
connecting cable. Refer to Chapter 1, Calibration,
and recalibrate the analog inputs option card.
E11: Not used
This error code message is not currently in use.
E12: Low pressure
Problem: This error code is triggered when the
pressure measurement is below the low
pressure switch setting.
Cause: The pressure measurement exceeds the
specified limits as set in the channelx-input/
output submenu.
Cause: Check the limit value (0 to 5,000 psia) entered
into the Channelx-input/output submenu, as
described in Chapter 1, Programming site data,
of the Programming manual.
E13: Over range
Problem: This error code message indicates that the
present measurement exceeds the range of
the meter.
Cause: A 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 in the channelx-system
menu. See Chapter 2, initial setup, of the
Startup guide for instructions.
E14: Totals overflow
Problem: The totalizers are unable to keep up with
the total accumulated flow signals.
Cause: The programmed units/pulse value is too small.
Action: Select a larger number of units/pulse value.
E15: Equation Limit
Problem: The meter cannot resolve the molecular
weight of the gas based on the measured
sound speed, temperature, pressure and N2
concentration.
NOTE: The mw reading will appear as 2.0e3 or 3.0e3 in
order to “flag” this condition.
Cause: One or more of the above measurements
must be incorrect.
Action: Verify the pressure and temperature readings
are correct. Verify the programmed (or input)
nitrogen concentration is correct. Verify that
the acoustic transit time measurements are
operating properly, and that the programmed
path and axial length dimensions are correct.
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