Pipe Wall; Path Length; Axial Length; Fluid Type - GE DigitalFlow GS868 Startup Manual

March 2008

Pipe Wall

Path Length

Axial Length

Fluid Type

Reynolds Correction

Calibration Factor

2-8
4. Use the numeric keys to enter the known thickness of the Pipe
[ENT]
Wall. Press .
If the pipe wall thickness is not available, look up the value in a table
of standard pipe size data or use the Model GS868's on-line Help
Menu (see the Programming Manual for details).
5. Press
[F1] [F2] = feet
= inch or
Path Length (P) of the ultrasonic signal. Press
will only accept values from 1/8 to 900 in.)
Note: The factory has calculated both the transducer signal path
(P)
length and the transducer signal axial length
the exact transducer configuration used for the application.
These values are engraved on the flowcell and/or are included
in the documentation supplied with the meter.
6. Press
[F1] [F2] = feet
= inch or
Axial Length (L) of the ultrasonic signal and press
Note: The factory has calculated both the transducer signal path
(P)
length and the transducer signal axial length
the exact transducer configuration used for the application.
These values are engraved on the flowcell and/or are included
in the documentation supplied with the meter.
7. Press
[F1]
= steam or
a. If
OTHER
was selected, enter the speed of sound (in feet per
second) in the gas to be measured. Press
only accept values from 125 to 9000 ft/sec.)
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
a. 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 desired value and press
9. Enter a value for the flow Calibration Factor and press
default value is 1.00. (The meter will only accept values from
0.5000 to 2.0000.) The meter will exit the
to the initial User (or Channel) Program screen.
to select the units. Then, enter the
to select the units.Then, enter the
[F2]
= any other gas to select the Fluid Type.
[ENT]
, [F2]
or to turn it on
[ENT]
.
PIPE
[ENT]
. (The meter
(L)
, based on
[ENT]
.
(L)
, based on
. (The meter will
.
[ENT]
. The
submenu and return
Initial Setup