
100
Using ProLink
®
Software with Micro Motion
®
Transmitters
Configure Menu: Transmitter Variables
continued
Density units
Figure 9-6. RFT9739 for Gas
6. If desired, enter text for the flow total unit of measure in the Tot Text
text box. If the transmitter has a display, this text appears in the flow
total screen.
For example, enter
SCF
.
7. Choose OK.
9.3 Density units
The transmitter can measure and indicate density in any of the standard
density units listed in
Table 9-4
, page 95.
After establishing the standard density unit, continue using it to configure
density outputs, but use grams per cubic centimeter (g/cc) to configure
slug flow limits and density calibration factors.
• To configure slug flow limits, see
Section 8.5
(page 81).
• To perform a density calibration, see
Section 14.4
(page 138).
API gravity
For an RFT9739 with software version 2.1 or higher, API gravity may be
selected as the density unit. If degrees API is selected, scale the density
output(s) to represent the range of densities for the Generalized
Petroleum Products measured during the application.
If degrees API is selected as the density unit, the RFT9739 calculates
standard volume at 1 atmosphere pressure (1 bar) for Generalized
Petroleum Products according to API-2540. The RFT9739 calculates
volume flow and volume total at 60
°
F or 15
°
C, depending on the
temperature unit:
• If degrees Fahrenheit or degrees Rankine is selected as the
temperature unit, the RFT9739 calculates volume at 60
°
F.
• If degrees Celsius or degrees Kelvin is selected as the temperature
unit, the RFT9739 calculates volume at 15
°
C.
Commentaires sur ces manuels