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Panametrics DigitalFlow GF868 Service Manual
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Flow
910-194S Rev. F
Jul 2021
DigitalFlow™ GF868
Ultrasonic Flowmeter
for Flare Gas
Service Manual (1 and 2-C
hannel)
2
Table of Contents
Default Chapter
7
Table of Contents
7
Chapter 1. Calibration
9
Introduction
9
Menu Map
9
Calibrating the Analog Outputs
10
Accessing the Calibration Menu
11
Calibrating the Low End of the Output Range
12
Calibrating the High End of the Output Range
12
Testing the Analog Output Linearity
13
Calibrating the Analog Inputs
14
Accessing the Calibration Menu
15
Alow Option = [F1]
16
Ahigh Option = [F2]
16
Ma Option = [F3]
16
Ma Option = [F4]
16
Calibrating the RTD Inputs
17
Accessing the Calibration Menu
17
Probe Option = [F1]
17
Numer Option = [F2]
18
Testing the Alarm Relays
19
Accessing the Calibration Menu
20
Testing the Totalizer/Frequency Outputs
21
Accessing the Calibration Menu
22
Entering Frequency
22
Entering Pulse Number
22
Chapter 2. Error Codes and Screen Messages
25
Introduction
25
E0: no Error
26
E1: Low Signal
26
E2: Sound Speed Error
26
E3: Velocity Range
26
E4: Signal Quality
26
E5: Amplitude Error
27
E6: Cycle Skip, Accel
27
E7: Analog out Error
27
E8: Temp in
27
E9: Press in
27
E10: Special Input
28
E11: Not Used
28
E12: Not Used
28
E13: over Range
28
E14: Totals Overflow
28
E15: Equation Limit
28
Screen Messages
29
Chapter 3. Diagnostics
31
Introduction
31
Displaying Diagnostic Parameters
31
Diagnostic Record
33
Flowcell Problems
33
Gas Problems
34
Pipe Problems
34
Transducer Problems
35
Chapter 4. Parts Replacement
37
Introduction
37
Fuse Replacement
38
Removing the Printed Circuit Board
39
Replacing the EPROM
40
Installing an Option Card
41
Replacing the LCD Display
42
Installing the Printed Circuit Board
42
Spare Parts
44
Appendix A. Service Record
47
Introduction
47
Data Entry
47
Appendix B. Optional Enclosures
49
Introduction
49
Rack Mount Enclosure
49
Rack Mount Fuse Replacement
50
Rack Mount Option Card Installation
51
Rack Mount EPROM Replacement
51
Rack Mount LCD Display Replacement
53
Rack Mount Printed Circuit Board Replacement
54
Circuit Board Removal
54
B.7.2 Circuit Board Installation
55
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Panametrics DigitalFlow GF868 Specifications
General
Brand
Panametrics
Model
DigitalFlow GF868
Category
Measuring Instruments
Language
English
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