GE XGS868 Owner's manual

GE Infrastructure
Sensing
Model XGS868
Steam Ultrasonic Mass Flow Transmitter (1 & 2 Channel)
Programming Manual

GE Infrastructure
Sensing
Model XGS868
Steam Ultrasonic Mass Flow Transmitter (1- & 2-Channel)
Programming Manual
910-196PC
November 2004
Model XGS868 is a GE Panametrics product. GE Panametrics has joined other GE high-technology sensing
businesses under a new name—GE Infrastructure Sensing.

iii
November 2004
Warranty Each instrument manufactured by GE Infrastructure Sensing, Inc. is
warranted to be free from defects in material and workmanship.
Liability under this warranty is limited to restoring the instrument to
normal operation or replacing the instrument, at the sole discretion of
GE Infrastructure Sensing, Inc. Fuses and batteries are specifically
excluded from any liability. This warranty is effective from the date of
delivery to the original purchaser. If GE Infrastructure Sensing, Inc.
determines that the equipment was defective, the warranty period is:
•one year for general electronic failures of the instrument
•one year for mechanical failures of the sensor
If GE Infrastructure Sensing, Inc. 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 Infrastructure Sensing, Inc., 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 of merchantability and fitness for a
particular purpose, and warranties arising from course of
dealing or usage or trade).
Return Policy If a GE Infrastructure Sensing, Inc. instrument malfunctions within the
warranty period, the following procedure must be completed:
1. Notify GE Infrastructure Sensing, Inc., 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 Infrastructure Sensing, Inc. will issue a RETURN
AUTHORIZATION number (RA), and shipping instructions for the
return of the instrument to a service center will be provided.
2. If GE Infrastructure Sensing, Inc. 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 Infrastructure Sensing, Inc. will evaluate the
instrument to determine the cause of the malfunction.
Then, one of the following courses of action will then be taken:
•If the damage is covered under the terms of the warranty, the
instrument will be repaired at no cost to the owner and returned.
•If GE Infrastructure Sensing, Inc. 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.

v
November 2004
Table of Contents
Chapter 1: Programming Site Data
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Programming Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Activating a Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Entering System Data for the Channel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Accessing the Channelx-System submenu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Selecting the Volumetric Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Selecting the Totalizer Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Selecting the Mass Flow Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Entering Transducer and Pipe Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Special Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Pipe Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Entering Zero Cutoff and Setting Up Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Zero Cutoff Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10
Assume Saturation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10
Steam Input Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11
Temperature Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11
Base Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12
Pressure Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12
Base Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12
Low Pressure Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13
Quality Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13
Entering Setup Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-15
Set Transducer Signal Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Setting Response Time - V Averaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-18
Initializing Setup Parameters - Default Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-18
Using Advanced Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
Entering Global Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-21
Entering Global System Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-21
Setting Up Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
Configuring the Communications Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-36
Requesting Parameters Using MODBUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-38
Chapter 2: Displaying and Handling Data
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Setting Up the LCD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Adjusting LCD Contrast and Brightness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Clearing Totals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Pausing and Restarting the Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Uploading Files to the PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Deleting Files from the XGS868 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Printing Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

November 2004
vi
Table of Contents (cont.)
Chapter 3: Logging Data
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Setting Up a Standard Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Setting Up an Error Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Checking the XGS868 Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Stopping a Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Appendix A: Menu Maps
Appendix B: Data Records
Available Option Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Option Cards Installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Setup Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
Appendix C: Remote Control Communications Unit
Using the RCCU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Communications Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6
The User Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6
Accessing the User Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7
Displaying Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9
Setting Up the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-10
RCCU Errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-13
Replacing the RCCU Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-14
Standard Version. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-14
Intrinsically-Safe Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-15
Appendix D: PanaView™ for IDM-Compatible Meters (916-086B)
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1
IDM-Compatible Flowmeters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
Wiring the RS232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
Starting Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
Setting Up the Communications Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3
Adding an IDM-Compatible Meter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-5
Editing Meter Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-7
Setting the Meter Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-9
Reading Transducer Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-10
Plotting Transducer Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-11
Saving Transducer Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-11
Clearing Totalizers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-11
Handling Site Files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-12
Changing Meter Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D-15

Chapter 1

Programming Site Data
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Programming Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Activating a Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Entering System Data for the Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Entering Transducer and Pipe Parameters . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Entering Setup Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Entering Global Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

Programming Site Data 1-1
November 2004
Introduction The Model XGS868 flow transmitter must be properly installed and
programmed, as described in the Startup Guide, before it can provide
accurate flow rate measurements. After completing the installation
and initial setup, use this chapter to program the advanced features of
the Model XGS868’s User Program.
Step-by-step programming instructions are presented in this chapter.
Also, as a programming aid, a complete set of menu maps for the SITE
EDIT MENU are included in Appendix A, Menu Maps for IDM. The
specific figure numbers will be referenced throughout this chapter, as
required.
Refer to the appropriate section for a discussion of the following SITE
EDIT MENU features.
•Channelx-Status - activate one or both channels and select the
desired measurement method.
•Channelx-System - enter the individual channel parameters.
•Channelx-Pipe Parameters - enter the pipe geometry and other
parameters.
•Channelx-Input/Output - set up the inputs and outputs.
•Channelx-Setup - set the signal limits, response times and mass
flow status.
•Global-System - select system units (English and metrics).
•Global-Input/Output - set up error handling, option cards and
display.
•Global-Comm Port - set the serial port parameters.
Note: The “x” in CHx represents the channel number. If you are
using a 1-Channel meter, only Channel 1will appear.
To get the XGS868 up and running as quickly as possible you must,
as a minimum, activate the channel(s), enter channel and global
system data and pipe parameters. The Procedure Options sections at
the end of each menu will help you in programming the required
(quick startup) and optional data.
Note: In this manual, only the programming of Channel 1 will be
described. To program Channel 2 of a 2-channel meter, simply
repeat the same procedure presented for Channel 1.

November 2004
1-2 Programming Site Data
Programming Methods There are three methods for programming the XGS868 flowmeter:
•Instrument Data Manager (IDM) - a PC-based, non-resident
software program that communicates with the XGS868 via its
RS232 serial port.
•PanaView™ - a Windows-based, non-resident software program
that communicates with the XGM868 via its RS232 serial port.
•Remote Control Communications Unit (RCCU) - a hand-held
device that communicates with the XGM868 through wireless,
infrared transmissions.
Note: The XGM868 cannot be programmed at the electronics
enclosure. One of the above methods must be used.
Although the actual displays differ somewhat, the general procedures
are the same for all three programming methods. This chapter
provides detailed IDM programming instructions. If you are using
PanaView™, see Appendix D, PanaView™ for IDM-Compatible
Meters and/or the PanaView™ User’s Manual (910-211) for detailed
instructions. If you are using the RCCU, refer to Appendix C, Remote
Control Communications Unit, for specific instructions.
Note: This manual is for instruments using software verion Y3DS or
later.

Programming Site Data 1-3
November 2004
Activating a Channel The Channelx-Status 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 XGS868.
While following the programming instructions, refer to Figure A-1 in
Appendix A.
To access the Channelx-Status submenu:
1. Open the SITE EDIT MENU from the Edit Functions menu.
2. Select Channelx.
3. Select Status.
4. Select Burst to activate the channel/path and press Next Item/
Enter.
Note: Burst is automatically selected for a 1-Channel meter.
5. Use the pull-down menu to select one of the measurement
methods described below and press Next Item/Enter.
•Skan Only is the preferred technique for locating the acoustic
signal and for high velocity measurements. It is more robust in
a noisy environment than the Measure technique.
•Skan/Measure is the preferred technique to use for low
velocity measurements.
If Skan Only is selected at the above prompt, the meter uses this
technique exclusively. However, if Skan/Measure is selected, the
meter uses Skan Only to find the acoustic signal and then tries to use
the Skan/Measure technique for the actual measurement.
Note: To change the Skan Only and Skan/Measure parameters, see
the Signal submenu section on page 1-15 of this chapter.
Procedure Options After completing the above step, IDM returns to the Channel
PROGRAM window. Do one of the following:
•To continue entering “quick startup” data, proceed to Step 3 in
the following section.
•To continue regular programming, refer to Appendix A, Menu
Maps, to navigate to the desired menu.
•To leave the User Program, press Exit Page twice.

November 2004
1-4 Programming Site Data
Entering System Data for
the Channel The Channelx-System submenu is used to enter system parameters
for the channel. While following the programming instructions, refer
to Figure A-1 in Appendix A.
Accessing the Channelx-
System submenu
1. Open the SITE EDIT MENU from the Edit Functions menu.
2. Select Channelx.
3. Select System.
4. Key in the desired Channel Label (up to 5 characters) and press
Next Item/Enter.
5. Key in the desired Site/Channel Message (up to 21 characters)
and press Next Item/Enter.
Selecting the Volumetric
Units
1. Use the pull-down menu to select the desired volumetric units for
the flow rate display and press Next Item/Enter. Available units
are listed in Table 1-1 below.
2. Use the pull-down menu to select the desired time units for the
flow rate display and press Next Item/Enter.
3. Use the pull-down menu to select the desired number of digits to
the right of the decimal point in the volumetric flow rate display
and press Next Item/Enter.
Table 1-1: Available Volumetric/Totalizer Units
English Metric
Actual Cubic Feet Actual Cubic Meters
Thousands of ACF Thousands of ACM
Millions of ACF Millions of ACM
Standard Cubic Feet Standard Cubic Meters
Thousands of SCF Thousands of SCM
Millions of SCF Millions of SCM

Programming Site Data 1-5
November 2004
Selecting the Totalizer
Units
1. Use the pull-down menu to select the desired units for the totalized
flow rate display and press Next Item/Enter. Available units are
listed in Table 1-1 on the previous page.
2. Use the pull-down menu to select the desired number of digits to
the right of the decimal point in the totalized flow rate display and
press Next Item/Enter.
3. Do one of the following:
•If MASS FLOW is ON, proceed to Selecting the Mass Flow
Units below.
•If MASS FLOW is OFF, the meter returns to the Channel
PROGRAM window. Go to Procedure Options on the following
page.
Note: To activate mass flow, refer to page 1-20.
Selecting the Mass Flow
Units
1. Use the pull-down menu to select the desired mass flow units for
the flow rate display and press Next Item/Enter. The available
units for this prompt are determined by the selection made at
System Units. See Table 1-2 below.
2. Use the pull-down menu to select the desired time units for the
mass flow rate display and press Next Item/Enter.
3. Use the pull-down menu to select the desired number of digits to
the right of the decimal point in the mass flow rate display and
press Next Item/Enter.
4. Use the pull-down menu to select the desired units for the totalized
mass flow rate display and press Next Item/Enter. The available
units for this prompt are determined by the selection made at
System Units.
5. Use the pull-down menu to select the desired number of digits to
the right of the decimal point in the totalized mass flow rate
display and press Next Item/Enter.
Table 1-2: Available Mass Flow Units
English Metric
Pounds Kilograms
Thousands of LB Metric Tons (1000 KG)
Millions of LB
Tons (2000 LB)

November 2004
1-6 Programming Site Data
Procedure Options After completing the above steps, IDM returns to the Channel
PROGRAM window. Do one of the following:
•To continue entering “quick startup” data, continue to Step 3 in
Entering Transducer and Pipe Parameters on the next page.
•To continue regular programming, refer to Appendix A, Menu
Maps, to navigate to the desired menu.
•To leave the User Program, press Exit Page twice.

Programming Site Data 1-7
November 2004
Entering Transducer and
Pipe Parameters Enter the transducer and pipe parameters via the Pipe Parameters
submenu. While following the programming instructions, refer to
Figure A-1 in Appendix A.
1. Open the SITE EDIT MENU from the Edit Functions menu.
2. Select Channelx.
3. Select Pipe Parameters.
4. Do one of the following:
•Standard transducers: enter the number engraved on the
transducer head, then use the pull-down menu to select
Standard and press Next Item/Enter. Proceed to Pipe Data on
the next page.
•Special transducers: use the pull-down menu to select Special
and press Next Item/Enter. Proceed to Special Transducers
below.
IMPORTANT: Special transducers have no engraved number on the
head and are rarely used. Examine the transducer
head carefully for a number.
Special Transducers 1. Assign a number between 91 and 99 for the special transducer and
press Next Item/Enter.
2. Use the pull-down menu to select the transducer frequency
(supplied by the factory) and press Next Item/Enter.
Note: The frequency is required to transmit an excitation voltage at
the transducer’s natural frequency.
3. Enter the special transducer time delay value (supplied by the
factory) and press Next Item/Enter.
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.

November 2004
1-8 Programming Site Data
Pipe Data If a standard transducer is being used, the programming sequence
should be rejoined at this point.
1. Enter the known pipe outside diameter or circumference, then use
the pull-down menu to select the units. Press Next Item/Enter.
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 found in Sound Speeds and Pipe Size Data manual
(914-004). Available units are shown in Table 1-3 below.
2. Enter the know thickness of the pipe wall and press Next Item/
Enter. If the pipe wall thickness is not available, look up the value
in a table of standard pipe size data which can be found in Sound
Speeds and Pipe Size Data manual (914-004).
IMPORTANT: Because the units cannot be independently chosen for
this parameter, the value must be entered in the same
units used for the pipe OD.
3. Enter the path length of the ultrasonic signal, then use the pull-
down menu to select the units. Press Next Item/Enter.
Note: If a spoolpiece was ordered with the meter, the transducer
signal path length (P) and the transducer signal axial length (L)
are engraved on the flowcell and/or are included in the
documentation supplied with the meter. For on-site transducer
installations, refer to Appendix C, Measuring P and L
Dimensions, in the Startup Guide for instructions.
Table 1-3: Available Pipe OD Units
English Metric
pipe OD in inches pipe OD in millimeters
pipe OD in feet pipe OD in meters
pipe circumference in inches pipe circumference in millimeters
pipe circumference in feet pipe circumference in meters

Programming Site Data 1-9
November 2004
Pipe Data (cont.) 4. Enter the axial length of the ultrasonic signal, then use the pull-
down menu to select the units. Press Next Item/Enter.
5. Use the pull-down menu to select the fluid type and press Next
Item/Enter. Then do one of the following:
•If OTHER was selected - proceed to Step 6.
•If STEAM was selected - proceed to Step 7.
6. Enter the speed of sound (in feet per second) in the gas to be
measured and press Next Item/Enter.
7. Enter a value for the flow calibration factor and press Next Item/
Enter. The default value is 1.00, but values between 0.50 and 2.0
may be entered.
Procedure Options After entering the Calibration Factor, IDM returns to the Channel
PROGRAM. Do one of the following:
•To continue entering “quick startup” data, press EXIT PAGE once
and proceed to Step 2 in Entering Global System Data on
page 1-21.
•To continue regular programming, refer to Appendix A, Menu
Maps, to navigate to the desired menu.
•To leave the User Program, press the EXIT PAGE key twice.

November 2004
1-10 Programming Site Data
Entering Zero Cutoff and
Setting Up Inputs Enter the zero cutoff value and set up the temperature, pressure and
quality inputs via the Input/Output submenu. While programming
these parameters, refer to Figure A-1 in Appendix A.
IMPORTANT: If an option card in Slot 1 fails to appear in this menu,
it may be turned Off. See the Global-Input/Output-
Options section on page 1-26 for setup instructions.
Zero Cutoff Value Near a zero flow rate, the Model XGS868’s readings may fluctuate
due to small offsets caused by thermal drift or similar factors. To
force a zero display reading when there is minimal flow, enter a zero
cutoff value as described below.
1. Open the SITE EDIT MENU from the Edit Functions menu.
2. Select Channelx.
3. Select Input/Output.
4. Enter a value from 0 to 1 ft/sec (0 to 0.30 m/sec) for the zero
cutoff and press Next Item/Enter. The recommended setting is 0.1
ft/sec (0.03 m/sec).
Assume Saturation This prompt permits you to use a single input for either temperature
or pressure to measure mass flow. The User Program contains a table
that correlates pressure and temperature for saturated steam. If the
meter can assume the steam is always at or near saturation, then only
a temperature or pressure input is needed. The meter will interpolate
the corresponding pressure or temperature.
1. Use the pull-down menu to select whether you will assume
saturation or not and press Next Item/Enter. Proceed to one of the
following sections:
•If you selected Yes - proceed to Steam Input Type on the next
page.
•If you selected No - proceed to Temperature Input on the next
page.

Programming Site Data 1-11
November 2004
Steam Input Type Use the next prompt to select which type of input will be used to
measure mass flow.
1. Use the pull-down menu to select the type of input that will be
used to measure mass flow and press Next Item/Enter. Proceed to
one of the following sections:
•If you selected Temperature - proceed to Temperature Input on
the next page.
•If you selected Pressure - proceed to Base Temperature on the
next page.
IMPORTANT: GE Infrastructure Sensing recommends using a live
input for either temperature or pressure when
assuming the saturation.
Temperature Input The Model XGS868 can use either a fixed temperature value or a live
temperature input to calculate the steam density for the mass flow rate
display.
1. Use the pull-down menu to select a fixed temperature value or to
set up the option card in Slot 1 that will supply the live
temperature input and press Next Item/Enter.
Note: If Slot 1 contains an activated option card with an analog
input assigned to Temperature or an RTD input, Slot 1 appears
as an option at the above prompt. If the process temperature is
stable, a fixed value may be used, but most applications
require a live temperature input.
If there is no active option card for temperature, the meter
assumes you are using a fixed temperature.
2. Proceed to one of the following sections:
•If you selected Fixed - proceed to Step 3.
•If you selected Slot 1 - proceed to Step 4.
3. Enter the know fixed process temperature and press Next Item/
Enter. The meter will accept values from -328° to 1832°F
(-200 to 1000oC). Proceed to Base Temperature on the next page.
4. Use the pull-down menu to set up input A or input B and press
Next Item/Enter. The inputs were labeled during setup.
Note: The set up of input A is used as an example. Identical
procedures would be used to set up input B.

November 2004
1-12 Programming Site Data
Base Temperature 1. Enter the base temperature and press Next Item/Enter. The ratio of
this value to the actual temperature is used to calculate the
standard mass flow rate.
2. Do one of the following:
•If you selected No at Assume Saturation, proceed to Pressure
Input below.
•If you selected Pressure as the Steam Input Type, proceed to
Pressure Input below.
•If you selected Temperature as the Steam Input Type, proceed
to Base Pressure below.
Pressure Input 1. Use the pull-down menu to select a fixed pressure value or to set
up the option card in Slot 1 that will supply the live pressure input
and press Next Item/Enter.
Note: If Slot 1 contains an activated option card with an input
assigned to Pressure, Slot 1 appears as an option at the above
prompt. If the process pressure is stable, a fixed value may be
used, but most applications require a live pressure input.
If there is no active option card for pressure, the meter
assumes you are using a fixed pressure.
2. Proceed to one of the following sections:
•If you selected Fixed - proceed to Step 3.
•If you selected Slot 1 - proceed to Step 4.
3. Enter the known fixed process pressure and press Next Item/
Enter. The meter will only accept values from 0 to 5000 psia.
Proceed to Base Pressure below.
4. Use the pull-down menu to set up input A or input B and press
Next Item/Enter. The inputs were labeled during setup.
Note: The set up of input A is used as an example. Identical
procedures would be used to set up input B.
Base Pressure Enter the base pressure and press Next Item/Enter. The ratio of this
value to the actual pressure is used to calculate the standard mass
flow rate.

Programming Site Data 1-13
November 2004
Low Pressure Switch 1. Use the pull-down menu to activate or deactivate the low pressure
switch software function and press Next Item/Enter.
2. Proceed to one of the following sections:
•If you selected Yes - proceed to Step 3.
•If you selected No - proceed to Quality Input below.
3. Enter the low pressure switch set point and press Next Item/Enter.
The acceptable range is 0 to 5000 psia. The meter will stop taking
readings if the pressure drops below this value.
Quality Input When the temperature and pressure inputs indicate that the steam is
saturated, the Quality Input value is used for the mass flow rate
calculations. Unless a different value is accurately known, accept the
default value at the following prompt:
Note: The quality value indicates what fraction of the fluid is in the
gas phase. The remaining fraction is assumed to be liquid
water. Thus, a quality value of 1.0 indicates 100% gas.
1. Use the pull-down menu to select a fixed steam quality value or to
set up the option card in Slot 1 that will supply the live steam
quality input and press Next Item/Enter.
Note: If Slot 1 contains an activated option card with an analog
input that has been programmed as Special, Slot 1 appears as
an option at the above prompt. Normally, a fixed value of 1.0
(100% steam) should be used for the steam quality value.
If there is no active option card for a special input, the meter
assumes you are using a fixed quality value.
2. Proceed to one of the following sections:
•If you selected Fixed - proceed to Step 3.
•If you selected Slot 1 - proceed to Step 4.
3. Enter the known fixed steam quality and press Next Item/Enter.
(The meter will accept values from 0.0000 to 1.0000.) Go to
Procedure Options of the following page.
4. Use the pull-down menu to set up input A or input B and press
Next Item/Enter. The inputs were labeled during setup.
Note: The set up of input A is used as an example. Identical
procedures would be used to set up input B.