FMC Technologies Proline Promass 83 E - Function Group REFERENCE PARAMETER

Issue/Rev. 0.2 (12/12) MN0M023 • Page 127
Device Functions Proline Promass 83 9 Block BASIC FUNCTION
9.2.3 Function group REFERENCE PARAMETER
BASIC FUNCTION G

HART GAA

PROCESS PARAMETER GIA

CONFIGURATION 640

EPD PARAMETER 642

REFERENCE PARAMETER 646
Function description
BASIC FUNCTION o PROCESS PARAMETER o REFERENCE PARAMETER
CORRECTED VOLUME
CALCULATION
(6460)
This function is used to set the reference density for calculating the corrected volume
flow.
Options:
FIXED REFERENCE DENSITY
CALCULATED REFERENCE DENSITY
EXTERN (with this option, the reference density can be read in via the current input)
Factory setting:
CALCULATED REFERENCE DENSITY
FIXED REF. DENSITY
(6461)
! Note!
This function is not available unless the FIXED REFERENCE DENSITY setting was
selected in the CORRECTED VOLUME CALCULATION function (6460).
In this function, a fixed value for the reference density can be entered, with which the
corrected volume flow or corrected volume is calculated.
User input:
5-digit floating-point number
Factory setting:
1 kg/Nl
EXPANSION
COEFFICIENT
(6462)
! Note!
This function is not available unless the CALCULATED REFERENCE DENSITY setting
was selected in the CORRECTED VOLUME CALCULATION function (6460).
For temperature-compensated calculations of the reference density an expansion
coefficient specific to the fluid is required and can be entered in this function
(see VALUE REFERENCE TEMPERATURE (6464) function on page 128).
User input:
5-digit floating-point number
Factory setting:
0.5000 e
–3
[1/K]
EXPANSION
COEFFICIENT SQUARE
(6463)
Use this function to enter a square expansion coefficient, if the temperature
compensation follows a nonlinear behavior (see VALUE REFERENCE TEMPERATURE
(6464) function on page 128).
User input:
5-digit floating-point number
Factory setting:
0 e
–6
[1/K
2
]