GE DigitalFlow GC868 Programming Manual
GE
Sensing & Inspection Technologies
DigitalFlow™ GC868
Panametrics Gas Clamp-On Ultrasonic Flowmeter
Programming Manual (1-Channel)
GE
Sensing & Inspection Technologies
DigitalFlow™ GC868
Panametrics Gas Clamp-On Ultrasonic Flowmeter
Programming Manual (1-Channel)
910-226P1F1
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.
April 2008
Warranty Each instrument manufactured by GE 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. Fuses and
batteries are specifically excluded from any liability. This warranty is
effective from the date of delivery to the original purchaser. If GE
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 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, 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 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 AUTHORIZATION number (RA), and shipping instructions
for the return of the instrument to a service center will be
provided.
2. If GE 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 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 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.
iii
April 2008
Table of Contents
Chapter 1: Programming Site Data
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Using the Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Obtaining On-line Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Using the Console Control Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Audio Alarm Volume. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Stopwatch Totalizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Display Brightness. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Display Contrast. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
The User Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Entering Programming Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Activating the Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Entering System Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10
Entering System Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Entering Volumetric Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Entering Totalizer Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11
Mass Flow (static)?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11
Entering Pipe Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Special Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Wedge Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Pipe Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14
Pipe OD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Pipe Wall. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Fluid Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Reynolds Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Calibration Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-15
Number of Traverses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Transducer Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
Setting Up Inputs/Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
Selecting Error Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
Setting Up Analog Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
Option Card Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-19
Setting Up the Totalizer/Frequency Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
Setting up the Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
Setting up RTD Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
Entering the Zero Cutoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
Setting Up Temperature and Pressure Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-24
Entering Setup Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
Setting Signal Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
Setting Response Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
Initializing the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
Setting Advanced Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-34
Setting the Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42
Setting the Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42
Setting the Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42
v
April 2008
Table of Contents (cont.)
Chapter 1: Programming Site Data (cont.)
Setting Up Serial Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-44
Entering MODBUS Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45
MODBUS/TCP Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45
MODBUS Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-46
Notes: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-47
Saving Site Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-48
Recalling a Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-49
Activating Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-50
Chapter 2: Displaying Data
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
The BIG Submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
The DUAL Submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
The GRAPH Submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Setting Up the GRAPH Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Using the GRAPH Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
The LOG Submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Entering the LOG Submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Numeric Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Graphical Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Displaying the Transducer Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Setting the LCD Backlight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Activating Sleep Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Chapter 3: Logging Data
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Creating a Standard Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Log Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
STARTTIME Prompt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
START DATE Prompt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
END TIME Prompt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
END DATE Prompt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
DURATION Prompt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
LOG TIME Prompt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
TIME INCREMENT Prompt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Checking the Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Stopping a Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Creating an ERROR Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Log Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
STARTTIME Prompt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
START DATE Prompt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
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April 2008
Table of Contents (cont.)
Chapter 4: Printing Data
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Print Live Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Numeric Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Graphical Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Printing Logs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Numeric Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Graphical Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Print Site File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Stop Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Setting Up a Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Printing Signal Array Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-10
Printing RTD Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Chapter 5: Clearing Data
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Reset Totals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Deleting Site Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Deleting Log Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Chapter 6: Serial Communications
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Wiring the RS232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Checking the GC868 Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Setting Up the Terminal Software and Transferring Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Windows 9X/NT Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
The Optional RS485 Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Interface Converter Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Point-To-Point Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Multi-Point Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Setting Up an Ethernet Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Setting Up a MODBUS/TCP Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Appendix A: Menu Maps
Appendix B: Data Records
Option Cards Installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Initial Setup Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
vii
April 2008
Table of Contents (cont.)
Appendix C: Programming with PanaView
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Wiring the RS232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Setting Up the Communications Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
Setting up Ethernet Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4
Adding the GC868. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5
Editing Meter Properties. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7
Setting the Meter Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-9
Reading Transducer Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-10
Plotting Transducer Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-10
Saving Transducer Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-11
Clearing Totalizers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-11
Handling Site Files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-12
Changing Meter Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-15
Appendix D: Foundation Fieldbus Communications
Optional Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1
Configuration Utility Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
Selecting the Desired Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
Selecting Units for AI Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4
Resetting Instrument Totalizers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-5
Function Block Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-6
viii
Chapter 1
Programming Site Data
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Using the Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Obtaining On-line Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Using the Console Control Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
The User Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Activating the Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Entering System Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Entering Pipe Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Setting Up Inputs/Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
Entering Setup Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
Setting the Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42
Saving Site Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-48
Recalling a Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-49
Activating Security. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-50
April 2008
Introduction The Model GC868 flowmeter cannot provide accurate flow rate
measurements until the instrument has been properly installed and the
basic system and pipe parameters have been programmed into the
meter. See the Startup Guide for detailed instructions on performing
these tasks. After completing the installation and initial setup, use this
chapter to program the Model GC868’s advanced features.
T en submenus within the User Program provide access to the various
programmable features of the Model GC868. Step-by-step
programming instructions are presented in this chapter. Refer to the
appropriate section for a discussion of the following User Program
submenus:
• ACTIV - select the desired measurement method
• SYSTM - enter the system data
• PIPE - enter the pipe parameters
• I/O - set up the inputs and outputs
• SETUP - set the signal limits and response times
• CLOCK - set the time and date
• COMM - set the serial port parameters
• SAVE - save site files
• RECLL - recall stored site files
• SECUR - enter a passcode
As an aid in following the programming instructions, a complete
menu map of the User Program is included in Appendix A, Menu
Maps.
Note: In the menu map drawings, plain text represents prompt area
messages and boxed text represents option bar choices. Fx
represents a function key to select an option bar choice.
Programming Site Data 1-1
April 2008
Using the Keypad The Model GC868 keypad contains 39 keys, that are labeled with
their primary (unshifted) functions. In addition, pressing the red
[SHIFT] key will access the secondary functions assigned to most of
the keys.
The complete keypad is illustrated in Figure 1-1 below and a detailed
description of both the unshifted and shifted functions for each of the
39 keys is listed in Table 1-1 on pag e 1-3.
Note: Only the
function.
[SHIFT] key and the eight [Fx] keys have no shifted
Figure 1-1: The Model GC868 Keypad
Note: Although the keypad is essentially the same, the front panel
layout of meters supplied in one of the optional enclosures is
different. See Appendix C, Optional Enclosures, of the Startup
Guide for a picture of the applicable front panel.
1-2 Programming Site Data
Table 1-1: Model GC868 Key Functions
Key Unshifted Function Shifted Function
Software Function Keys - press to
None
select the functions displayed directly
above them in the option bar. These
keys apply only to the left pane of the
display screen.
April 2008
Software Function Keys - press to
select the functions displayed directly
above them in the option bar. These
keys apply only to the right pane of the
display screen.
Shift Key - use this red key to access
the shifted function of the other keys.
One press shifts the next keystroke
only, while two presses locks the keypad in shifted mode. A third press
releases the shift function.
Arrow Keys - in measurement mode,
use to scroll through function choices
on the option bar. In programming
mode, use to scroll through menu
choices. The [←] also acts as a backspace key in programming mode.
None
None
Use to enter the letters A, B, C and D,
respectively.
PROG
Programming Site Data 1-3
Program. See page 1-8 for details.
Program Key - press to enter the User
Use to enter the letter Q.
April 2008
Table 1-1: Model GC868 Key Functions (Continued)
Key Unshifted Function Shifted Function
DISP
Display Key - use to display data in a
variety of numeric and graphic format-
Use to enter the letter O.
ting options. See page 2-2 for details.
LOG
Log Key - use to set up logs. See page
3-1 for details.
Use to enter the letter X.
PRNT
CLR
CAL
EXIT
ENT
HELP
Print Key - use to print live measurements, log files and signal arrays. See
page 4-1 for details.
Clear Key - use to reset totals and to
delete site and log files from the Model
GC868 memory. See page 5-1 for
details.
Calibration Key - use to calibrate the
analog inputs and outputs and to test
the alarm relays and the totalizer/frequency outputs. See Chapter 1, Cali-
bration, of the Service Manual for
details.
Exit Key - use to move up one level in
the user program or to exit the user
program. See page 1-8 for details.
Enter Key - use to confirm the most
recent input information.
Help Key - use to access the Model
GC868’s context-sensitive on-line help
system. See the next section for details.
Use to enter the letter R.
Use to enter the letter H.
Use to enter the letter P.
Use to enter the letter J.
Use to enter the letter K.
Use to enter the letter I.
SCREEN
Screen Key - press the left side to
select the left display pane or press the
right side to select the right display
Press the left side to enter the letter V
or press the right side to enter the letter
W.
pane.
Decimal Point Key - press to enter a
Use to enter the letter Z.
decimal point during numeric entry.
Minus Key - use to enter a minus sign
Use to enter a space character.
or a dash.
Zero Key - use to enter the number 0. Use to enter the letter Y.
0
One Key - use to enter the number 1. Use to enter the letter S.
1
1-4 Programming Site Data
Table 1-1: Model GC868 Key Functions (Continued)
Key Unshifted Function Shifted Function
Two Key - use to enter the number 2. Use to enter the letter T.
2
Three Key - use to enter the number 3. Use to enter the letter U.
3
Four Key - use to enter the number 4. Use to enter the letter L.
4
Five Key - use to enter the number 5. Use to enter the letter M.
5
Six Key - use to enter the number 6. Use to enter the letter N.
6
Seven Key - use to enter the number 7. Use to enter the letter E.
7
April 2008
8
9
Eight Key - use to enter the number 8. Use to enter the letter F.
Nine Key - use to enter the number 9. Use to enter the letter G.
Audio Level Key - press to increase
the audio alarm volume.
Stopwatch Timer Key - press to turn
the stopwatch timer on.
Backlight Key - press to turn the display backlight on or to increase its
brightness.
Contrast Key - press to increase the
contrast of the display screen.
Press to decrease the audio alarm vol-
ume.
Press to turn the stopwatch timer off.
Press to turn the display backlight off
or to decrease its brightness.
Press to decrease the contrast of the
display screen.
Programming Site Data 1-5
April 2008
Obtaining On-line Help A context-sensitive, on-line help system is programmed into every
Model GC868 flowmeter. On-line help, which displays additional
information related to the current task, may be accessed at any time
by pressing the
be shown on the currently selected pane of the display screen, as
shown in Figure 1-2 below.
[HELP] key on the keypad. The help information will
ON-LINE HELP
MORE FLOWEXIT ERROR
Figure 1-2: Typical On-Line Help Screen
After entering the on-line help system, the following functions are
available on the option bar of the selected display pane:
• MORE: Press [F1] (or [F5]) to access this function, and the next
screen of text is displayed in the prompt area.
• EXIT: Press [F2] (or [F6]) to access this function, and the Model
GC868 returns to measurement mode.
• ERROR: Press [F3] (or [F7]) to access this function, and the various
Model GC868 error codes are displayed. Use the
[F8]) function keys, in conjunction with the [←] and [→] keys, to
obtain additional information on the desired error code or to exit
the help system.
Note: See the Service Manual for a complete listing of all error
codes and messages
[F1]-[F4] (or [F5]-
• FLOW: Press [F4] (or [F8]) to access this function, and the various
flow measurement parameters are displayed. Use the
[F5]-[F8]) function keys, in conjunction with the [←] and [→] keys,
to obtain additional information on the desired measurement
parameter or to exit the help system.
[F1]-[F4] (or
1-6 Programming Site Data
April 2008
Using the Console Control Keys
The Model GC868 has four console control keys, which are located
on the left side of the keypad. Use these keys, which are described
and pictured in Table 1-1 on page 1-3, as follows:
Audio Alarm Volume Use the top console control key to adjust the audio alarm volume.
Discrete presses will incrementally increase the volume of the audio
alarm. Hold the key down for continuous increase. Use the key in
shifted mode to decrease the volume of the audio alarm.
Stopwatch Totalizer Use the second console control key for the stopwatch totalizer.
Press the key once to start the stopwatch totalizer . Press the key once,
in shifted mode, to stop the stopwatch totalizer.
Note: Instructions on properly setting up the stopwatch totalizer are
given later in this chapter. Also, the Service Manual provides
information on the error response of the stopwatch totalizer.
Display Brightness Use the third console control key to adjust the display backlight.
Discrete presses of this key will increase the backlight brightness
through settings of Off, Mid and Full. Discrete presses of this key in
shifted mode, will decrease the backlight brightness through settings
of Full, Mid and Off.
Note: The display backlight has an automatic time-off feature. See
page 2-14 for setup instructions.
Display Contrast Use the bottom console key to adjust the display contrast.
Discrete presses will incrementally increase the display contrast.
Hold the key down for continuous increase. Use the same key, in
shifted mode, to decrease display contrast.
Programming Site Data 1-7
April 2008
The User Program Use the keypad, as described in the previous section, to navigate
through the User Program. The menu map may be followed in
sequence, or the [↑] and [↓] keys may be used to scroll through the
prompt screens. The [←] key may be used to delete the last
alphanumeric character that was entered from the keypad.
The following discussion assumes that the left screen pane is active.
If the right screen pane is active, only the function key designations
change. That is, replace
Note: Be sure to record all the programming data entered in this
chapter in Appendix B, Data Records.
[F1]-[F4] with [F5]-[F8].
Entering Programming Mode
Programming of the
ACTIV, SYSTM and PIPE submenus is necessary for
operation of the Model GC868. Failure to accurately enter all of the
required information will result in unreliable flow rate data.
Therefore, be sure to complete at least the sections of this chapter
pertaining to those three submenus.
Note: Because it is so essential, instructions for programming the
ACTIV, SYSTM and PIPE submenus are also included in the
Startup Guide. If that programming has already been
completed, those sections of this chapter may be skipped.
Except for the three submenus noted above, it is not necessary to
program the Model GC868 flowmeter in any particular order.
Therefore, the sections of this chapter need not be completed in
sequence. Proceed immediately to any section of interest.
T o access the User Program, press the [PROG] key on the keypad. The
standard measurement mode screen is replaced by the following
initial programming mode screen:
PROGRAM Start
Press the [←] and [→] keys
and one of the function keys
[F1]-[F4] to select the desired
submenu. From this screen,
[EXIT] to return to
PROGRAM
status
ACTIV SYSTM PIPE I/O
press
measurement mode.
Note: If the security feature is active, enter the password and press
[ENT] key to enter the User Program. See the SECUR
the
submenu section of this chapter for more information on the
security feature.
1-8 Programming Site Data
April 2008
Activating the Channel The ACTIV submenu permits selection of the desired measurement
method. While following the programming instructions, refer to
Figure A-1 on page A-1 of Appendix A, Menu Maps.
1. Enter the
prompt. Then press
Note: The current status of the meter appears in the bottom line.
2. Press
Integrate mode,
select Skan/Correlation mode. The meter returns to the
screen.
a. If you select Skan or Skan/Measure Count modes, the GC868
The Model GC868 can take measurements in four different ways
ACTIV submenu by pressing [F1] at the User PROGRAM
[F1] to activate the channel in BURST mode.
[F1] to select Skan mode, [F2] to select Skan/Measure
[F3] to select Skan/Measure Coun t mode, or [F4] to
PROG
asks if you will Use 703-1273 DSP? (the digital signal
processing board). Press
the onboard signal processing. (The factory recommends using
the DSP for improved response time.)
[F2] to apply the board, or [F1] to apply
• Skan is a low resolution technique for locating the acoustic signal
and for high velocity measurements. It is more robust in a noisy
environment than the Measure technique. A variation, the Skan/
Correlation mode, is used primarily for liquid detection
applications.
• Measure is a more precise technique best used for low velocity
measurements. You can choose from Skan/Measure Count (the
default technique) or Skan/Measure Integrate (the traditional Skan/
Measure mode).
IMPORTANT: Consult with the factory before selecting the Skan/
Correlation or Skan/Measure Integrate modes.
If Skan is selected at the next prompt, the instrument uses this
technique exclusively. However, if one of the S/M modes is selected,
the meter uses Skan to find the acoustic signal and then tries to use the
Measure technique for a more precise measurement.To change the
Skan and Measure parameters, see the
sections of this chapter.
SIGNL and ADVAN submenu
Procedure Options After completing the above steps, continue as follows:
• To continue programming the meter, refer to the menu maps in
Appendix A and navigate to the desired menu. Then, proceed to
the appropriate section of the manual for instructions.
• To leave the User Program and retain the previous settings,
[EXIT] and then press [F1] = NO at the SAVE prompt. Any
press
programming changes will be discarded and you will be
returned to the data display.
• To leave the User Program and return to measurement mode,
[EXIT] and then press [F2] = YES at the SAVE prompt. Your
press
programming changes will be entered into the meter’s memory,
and you will be returned to the data display.
Programming Site Data 1-9
April 2008
Entering System Data 1. At the User Program screen, press the [F2] function key to
program the
SYSTM submenu.
2. Enter a Site Label of up to 9 characters and press
[ENT]. (While
taking measurements, the site label will appear on the locator bar.)
3. Enter a Site Message of up to 21 characters. Press
[ENT].
Entering System Units 4. To select the System Units, press [F1] to display parameters and
measurements in English units, or press
and measurements in Metric units.
5. Use the
[F1]-[F4] keys to select the type of Pressure Units desired.
The available pressure units are shown in Figure A-1 on page A-1.
The choices shown on the option bar are determined by the
selections made at the previous
SYSTEM UNITS prompt.
a. If you have entered the local Atmospheric Pressure (PSIg,
BARg or kPag), use the numeric keys to enter the atmospheric
pressure value. Press
[ENT].
6. At the Stopwatch Totalizer prompt, press
flow continuously, or
Stopwatch Timer. (With
[F2] to measure totals manually with the
MNUAL ([F2]), the console key on the
keypad is used to start and stop the totalizer. See page 1-7 for
details.)
[F2] to display parameters
[F1] to totalize all liquid
IMPORTANT: After setting up the Stopwatch Totalizer , pr ess
[CLR] to
clear the Stopwatch Totalizer, or the new totals will
be added to any previously accumulated totals.
Note: The manner in which the Stopwatch Totalizer responds to an
error condition may be set in the
7. At the Equation prompt, press
data in standard volumetric units or press
I/O submenu.
[F1] to display the measurement
[F2] to display the
measurement data in actual volumetric units.The Model GC868
will use the appropriate gas equation to calculate the flow rate,
corresponding to the measured data, in the volumetric units
indicated.
a. If you selected Standard, press
gas as an ideal gas or press
[F1] to have the meter treat the
[F2] to have the meter treat the gas
as a supercompressed gas.
1-10 Programming Site Data
April 2008
Entering Volumetric Data 8. Use the [F1]-[F4] and [→] keys to select the desired Volumetric
Units for the flow rate display. The available volumetric and
totalizer units are shown in Figure A-1 on page A-1.
9. Use the
[F1]-[F4] keys to select the Volumetric Time (units for the
volumetric flow rate display).
10.Use the
[F1]-[F4] keys to select the Vol Decimal Digits (the desired
number of digits to the right of the decimal point) in the
volumetric flow rate display.
Entering Totalizer Data 11. Use the [F1]-[F4] and [→] keys to select the Totalizer Units.
12.Use the
desired number of digits to the right of the decimal point) in the
totalized flow display .
[F1]-[F4] keys to select the Total Decimal Digits (the
Mass Flow (static)? 13.If the Static Density? prompt in the ADVAN option (SETUP submenu)
is set to
Otherwise, proceed as follows:
a. Use the
English Mass Flow Units Metric Mass Flow Units
LB- Pounds KG - Kilograms
NO, the GC868 returns to the initial User Program screen.
[F1]-[F4] keys to select the Mass Flow units, listed in
Table 1-2 below.
Table 1-2: Available Mass Flow Units
KLB - Thousands of Pounds
MMLB - Millions of Pounds
TONS - Tons Tonnes - Metric Tons
b. Use the
c. Use the
[F1]-[F4] keys to select the Mass Flow Time units.
[F1]-[F4] keys to select the MDOT DECIMAL DIGITS
(the number of digits to the right of the decimal point) for
displaying mass flow.
d. Use the
[F1]-[F4] keys to select the Mass (Totalizer) units, li sted
in Table 1-2 above.
e. Use the
[F1]-[F4] to specify the Mass Decimal Digits (the
number of digits to the right of the decimal point) for
displaying totalized mass flow. The meter returns to the initial
User (or Channel) Program screen.
Programming Site Data 1-11
April 2008
Procedure Options After completing the above steps, the meter returns to the User
PROGRAM
prompt. Continue as follows:
• To continue programming the meter, refer to the menu maps in
Appendix A and navigate to the desired menu. Then, proceed to
the appropriate section of the manual for instructions.
• To leave the User Program and retain the previous settings,
press
[EXIT] and then press [F1] = NO at the SAVE prompt. Any
programming changes will be discarded and you will be
returned to the data display.
• To leave the User Program and return to measurement mode,
press
[EXIT] and then press [F2] = YES at the SAVE prompt. Your
programming changes will be entered into the meter’s memory,
and you will be returned to the data display.
1-12 Programming Site Data
Entering Pipe Data The PIPE submenu permits entry of the transducer and pipe
specifications. To program this menu, complete the following steps:
April 2008
1. At the User Program screen, press
[F3] to program the PIPE
submenu.
2. Enter the Transducer Number (normally engraved on the head of
the transducer). Press
[ENT]. If there is no engraved number,
complete the steps below. Otherwise, proceed to step 3.
IMPORTANT: Special transducers, which have no engraved
number on the head, are rarely used. Examine the
transducer head carefully for a number.
Special Transducers a. Assign a number between 91 and 99 to the Special Transducer
and press
199.)
b. Press
Note: While three choices are available (Rayleigh, Shear wave or
wetted transducers), the GC868 is designed for use with Shear
wave clamp-on transducers. Consult the factory before
selecting Rayleigh or wetted transducers.
[ENT]. (The meter will only accept values from 1 to
[F2] to select Shear wave as the Transducer Type.
c. Use the [→] and
[F1]-[F4] keys to select the Frequency of the
special transducer. The meter can not transmit an excitation
voltage at the transducer’s natural frequency without this data.
d. Press
[F1]-[F4] to select the Wedge Material. The available
options include
temperature),
VHT (very high temperature), MT (medium
HT (high temperature) and OTHER. Refer to the
data sheet supplied with your transducer to determine the
appropriate setting.
e. Use the numeric keys to enter the Wedge Angle (the angle of
the ultrasonic transmission) supplied by the factory in degrees
and press
[ENT].
• If you selected OTHER in step d, use the numeric keys to enter
the Wed ge Soundspeed in ft/sec or m/sec supplied by GE and
[ENT]. The meter proceeds to step 5.
press
Wedge Temperature 3. Use the numeric keys to enter the Wedge Temperature supplied by
the factory in deg F and press
[ENT].
Programming Site Data 1-13
April 2008
Pipe Material 4. Press [F1]-[F4] to select the Pipe Material. Press [→] to access
additional options, as listed in Table 1 -3 below.
Table 1-3: Pipe Materials
Category Specific Material
Steel Carbon Steel or Stainless Steel
Iron Ductile Iron or Cast Iron
Cu - Copper None
Al - Aluminum None
Brass None
CuNi - Copper/Nickel 70% Cu 30% Ni or 90% Cu 10% Ni
Glass Pyrex, Flint, or Crown
Plastic Nylon, Polyester, Polypropylene, PVC
(CPVC), Acrylic
Other* Any material
• Depending on the pipe material choice, another prompt may
ask you to select the Specific Material.
• If you have selected “Other,” enter the pipe material Sound
Speed. Press
Pipe OD 5. Enter the known Pipe OD or circumference and use the [F1]-[F4]
keys to select the appropriate units. Press
only accept values from 1/8 to 648 in.)
The required pipe data may be obtained 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 (see
the GE document Sound Speeds and Pipe Size Data, #914-004). For a
list of the available English and Metric units and their definitions for
PIPE OD prompt, refer to Table 1-4 on page 1-15.
the
[ENT].
[ENT]. (The meter will
1-14 Programming Site Data
April 2008
Pipe OD (cont.)
Table 1-4: Available Pipe OD Units
English Metric
inch = pipe OD in inches mm = pipe OD in millimeters
feet = pipe OD in feet m = pipe OD in meters
in/PI = pipe circumference
in inches
ft/PI = pipe circumference
in feet
mm/PI = pipe circumference
in millimeters
m/PI = pipe circumference
in meters
Pipe Wall 6. Enter the known thickness of the Pipe Wall, in the same units used
for the pipe OD. Press
from 0 to 4 in.)
If the pipe wall thickness is not known and cannot be conveniently
measured, look up the value in a table of standard pipe size data or
use the Model GC868’s on-line Help Menu.
[ENT]. (The meter will only accept values
Fluid Type 7. Press [F1] = natural gas, [F2] = air, [F3] = steam, or [F4] = any other
gas to select the Fluid Type. If
of sound (in feet per second) in the gas to be measured. Press
[ENT]. (The meter will only accept values from 125 to 9000 ft/sec.)
OTHER was selected, enter the speed
Reynolds Correction 8. The Reynolds Correction factor is a number based on the
kinematic viscosity and flow rate of the gas. At the prompt, press
[F1] to turn Reynolds Correction off, or [F2] to turn it on.
• If you select Reynolds Correction, the GC868 asks for the
Kinematic Viscosity of the gas (available in the brochure Sound
Speeds and Pipe Size Data, 914-004). Use the numeric keys to
enter the correct value and press
Calibration Factor 9. Enter a value for the flow Calibration Factor and press [ENT]. The
default value is 1.00. (The meter will only accept values from
0.5000 to 2.0000.) If you are using wetted transducers, you have
completed programming in the
Number of Traverses 10. Press [F1]-[F4] to select the desired number of traverses (times the
ultrasonic signal traverses the pipe, from 1 to 9).
Note: Most clamp-on gas applications require a single traverse
(1(Z)).
[ENT].
PIPE menu.
Programming Site Data 1-15
April 2008
Transducer Spacing 11. The Transducer Spacing prompt displays the spacing of the
transducers, as calculated from the information you have entered.
Record this number in Appendix B, Data Records, and use it to
properly space the transducers.
Note: If necessary, you can overwrite the spacing shown at the
previous prompt (using the numeric keys) to match the actual
physical spacing of the transducers. GE does not recommend
overwriting the spacing. If you must, do not change the
spacing by more than ±10% from the value shown.
Procedure Options After completing the above steps, the meter returns to the User
Program prompt. Continue as follows:
• To continue programming the meter, refer to the menu maps in
Appendix A and navigate to the desired menu. Then, proceed to
the appropriate section of the manual for instructions.
• To leave the User Program and retain the previous settings,
press
[EXIT] and then press [F1] = NO at the SAVE prompt. Any
programming changes will be discarded and you will be
returned to the data display.
• To leave the User Program and return to measurement mode,
press
[EXIT] and then press [F2] = YES at the SAVE prompt. Your
programming changes will be entered into the meter’s memory,
and you will be returned to the data display.
1-16 Programming Site Data
April 2008
Setting Up Inputs/ Outputs
Set up the GC868’s inputs and outputs via the four options in the I/O
submenu. While following the programming instructions, refer to
Figure A-2 on page A-2 of Appendix A, Menu Maps.
• ERROR - program the meter’s response during an error condition
• OPTN - set up the Slot 0 analog outputs and any option cards
• ZERO - set the meter’s zero point cutoff value
• T,P - set up the temperature and pressure inputs
Enter the
screen. Then press
Note: In this section, a slot’s number will appear on the option bar
Proceed to the appropriate section to program the option selection
made at the above prompt. Remember to record all programmed data
in Appendix B, Data Records.
Selecting Error Handling This menu option permits programming of the mann er in which the
Model GC868’s totalizers respond during an error condition. See
Chapter 2, Error Codes and Screen Messages, of the Service Manual
for a discussion of the built-in error codes.
I/O submenu by pressing [F4] at the initial User Program
[F1]-[F4] to select the desired I/O option.
only if an option card is installed in that slot. The generic
designations
expansion slots and the function key used to select it.
Slot x and Fx are used to indicate any one of the
1. At the I/O prompt, press [F1] = Error.
2. Press
[F1] if you want the GC868 to Hold the last “good” reading
and continues to totalize, based on that reading, or press
No Up,
if you want the meter to stop totalizing.
[F2],
Programming Site Data 1-17
April 2008
Setting Up Analog Outputs The Model GC868 has two built-in analog outputs, which are
assigned to
the six expansion slots. See Chapter 1, Installation, of the Startup
Guide for a complete description of the available option cards.
This menu option is used to set up and/or scale the analog inputs and
outputs. To accomplish this, complete the following steps:
Slot 0. Also, a variety of option cards may be installed in
I/O
Use the [←] and [→] and the
[F1]-[F4] keys to select the
desired slot number. (Only
those slots which contain an
I/O
last selection appears here
SLOT0 SLOT1 SLOT2 SLOT3
option card will appear on
the option bar.)
Note: If the number of a slot with an installed option card does not
appear, the card may not have been initialized or it may be
defective. Call the factory for assistance.
Complete the following steps to set up the
1. Use the
[F1]-[F4] keys to set up outputs A, B, C or D, respectively.
Slot x analog outputs:
Note: The set up of output A is used as an example. Identical
procedures would be used to set up the other outputs.
2. Press
[F1] = OFF to disable output A and return to the previous
prompt, or press
[F2] = 0-20 m or [F3] = 4-20 m to specify the
desired range for output A.
3. Use the [←] and [→] and
[F1]-[F4] keys to specify the desired
Output Measurement parameter (see Figure A-2 on page A-2).
4. Enter the Zero value for the low end of the chosen output range.
[ENT].
Press
5. Enter the Full value for the high end of the chosen output range.
[ENT].
Press
6. Press
[F1]-[F4] to select the desired Error Response option, as
described in Table 1-5 on the next page.
1-18 Programming Site Data
April 2008
Setting Up Analog Outputs
(cont.)
Option Display Response
HOLD Holds the last “good” reading.
LOW Forces the outputs to the low set point.
HIGH Forces the outputs to the high set point.
OTHER Allows user to enter 4-20 mA error level in mA.
7. Use the [F1]-[F4] keys to set up another output or press [EXIT] to
select another slot for setup.
For instructions on setting up additional inputs and/or outputs
proceed to the appropriate section. Otherwise, press
the main
I/O menu prompt.
Table 1-5: Error Response Options
[EXIT] to return to
Option Card Alarms 1. Use the [←] and [→] and the [F1]-[F4] keys to select the desired
slot number.
2. Use the
respectively.
[F1]-[F3] keys to set up alarm relays A, B, or C,
Note: The set up of alarm A is used as an exa mple. Identical
procedures would be used to set up the other alarms.
3. Press
[F1] = OFF to disable Alarm A and return to the previous
prompt, or press
[F2] = HIGH, [F3] = LOW or [F4] = FAULT to specify
the type for Alarm A.
4. Press
[F1] = NO for standard operation or [F2] = YES for Failsafe
operation.
5. Do one of the following:
• If you selected FAULT, proceed to step 6.
• If you selected HIGH or LOW, complete the steps below.
a. Use the [←] and [→] and
Output Measurement parameter, as shown in Figure A-2 on
page A-2.
b. Enter a value for the trigger point of the alarm and press
6. Press
[F1]-[F3] to set up another alarm or press [EXIT] to select
another slot for set up.
[F1]-[F4] keys to specify the desired
[ENT].
For instructions on setting up additional inputs and/or outputs
proceed to the appropriate section. Otherwise, press
the main
Programming Site Data 1-19
I/O menu prompt.
[EXIT] to return to
April 2008
Setting Up the Totalizer/ Frequency Outputs
Programming a Frequency
Output
1. Use the [←] and [→] and the [F1]-[F4] keys to select the desired
slot number.
2. Press
3. Press
[F1]-[F4] to set up outputs A, B, C or D, respectively.
[F1] = OFF to disable output A and return to the previous
prompt, or press
[F2] = FREQ or [F3] = TTLZR to designate output A
as a frequency or a totalizer output, respectively.
Note: The setup of output A is used as an example. Identical
procedures would be used to set up the other outputs.
• To program a frequency output, go to step 4.
• To program a totalizer output, go to step 5.
4. The FREQ output, [F2], produces a frequency pulse that is
proportional to the output measurement. Complete the steps below
to program the frequency output.
a. Use the [←] and [→] and
Output Measurement parameter.
b. Enter the Base value for the low end of the frequency output
range and press
[ENT].
[F1]-[F4] keys to specify the desired
c. Enter the Full value for the high end of the frequency output
range. Press
[ENT].
d. Enter a value between 1 and 10,000 for the Full Scale
Frequency. Press
e. Use the
[F1]-[F4] keys to select the desired Error Option, the
[ENT].
way the display responds during an error condition. Available
options are shown in Table 1-6 below. Then skip to step 6 on
the next page.
Table 1-6: Error Response Options for Frequency Output
Option Display Response
HOLD Holds the last “good” reading.
LOW Forces the outputs to the low setpoint.
HIGH Forces the outputs to the high setpoint.
OTHER Allows user to enter Hertz error level.
1-20 Programming Site Data
April 2008
Programming a Totalizer
Output
5. The TTLZR output, [F3], issues one pulse per selected volume of
flow. The meter produces a pulse each time the programmed
amount of flow passes through the pipe. Complete the steps below
to program the totalizer output.
a. Press
[F1] = +TOTL to totalize the forward flow, [F2] = -TOTL to
totalize the reverse flow,
the forward mass flow or
[F3] = +MASS (if available) to totalize
[F4] = -MASS (if available) to totalize
reverse mass flow.
b. Enter a value from 50 to 500,000 μsec for the Minimum Pulse
ON Time and press [ENT].
Note: A complete pulse consists of equal amounts of
ON and OFF
times. Choose a value that is compatible with the frequency
counter to be used.
c. Enter a value for the number of measurement Units/Pulse and
[ENT].
press
6. Press
[F1]-[F4] to set up another totalizer/frequency output or press
[EXIT] to select another slot for setup.
Programming Site Data 1-21
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