GE PT878GC 用户手册
Programming Site Data
4-51
April 2004
Entering Reynolds Correction (cont.)
b. Press
[ENTER]
to confirm your selection.
Note: If you disable Reynolds Correction, you will not be able to
enter any other values in this window.
2. If you enable Reynolds Correction, you will also need to enter
the Kinematic Viscosity of the gas (available in the brochure
Sound Speeds and Pipe Size Data, 914-004). The next prompt
asks if you wish to enter the Kinematic Viscosity as a single
number, or as a table of values.
Sound Speeds and Pipe Size Data, 914-004). The next prompt
asks if you wish to enter the Kinematic Viscosity as a single
number, or as a table of values.
a. Use the [
W
] and [
X
] keys to scroll to the appropriate
radio button.
b. Press
[ENTER]
to confirm your selection.
3. The following steps depend on whether you select a single
value or a table for Kinematic Viscosity.
If you entered Single:
The prompt asks for a kinematic viscosity value.
a. Press
[ENTER]
to open the text box.
b. Use the numeric keys to enter the known value (from
Sound Speeds and Pipe Size Data).
c. Press
[ENTER]
to confirm your selection.
You have completed entering data for a single Kinematic
Viscosity factor.
Viscosity factor.
If you entered Table:
The menu asks, first for the data source, and then for the entry of
values into the Reynolds Correction table. This procedure allows
the PT878GC to estimate Kinematic Viscosity from other
measurements, such as signal strength.
values into the Reynolds Correction table. This procedure allows
the PT878GC to estimate Kinematic Viscosity from other
measurements, such as signal strength.
a. Press
[ENTER]
to open the Data Source window. The
Select Measurement window (Figure 4-19 on page 4-40)
appears.
appears.