4 Operation
MANUAL TME400-VCF · EN08 · July, 01
st
2021
4.3.
Equations in the TME400
The TME400 enables calculation of different values from the measured data and in
the data entered in the TME400. For a better understanding, some variables and for-
mula in this chapter are presented in advance; other equations and definitions of pa-
rameters are found in the chapter 4.3.3. Coordinates in context.
4.3.1.
Variable description
Operating volume flow at
measurement conditions
Frequency of the volume
transmitter
Operating volume at
measurement conditions
Meter factor
(only for output contacts)
Standard volume flow at normalized
condition
Standard volume at normalized
condition
Meter factor
(only for output contacts)
Measured pressure (absolute)
Pressure in standard state
(=1.01325 bar absolute)
Measuring temperature in Kelvin
Temperature in standard state
(= 273.15 K)
Real gas factor in standard state
(calculation for Z and Z
n
takes place
according to GERG-88 in
accordance with G9)