RMG TME400, Operating Manual

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4 Operation
MANUAL TME400-VCF · EN08 · July, 01 st 2021
70
4.3.3.5.
Analysis
Coordi-
nate
Name Description
E01 Conversion factor
Conversion factor; see above
E02 Compression factor Compressibility (from AGA8, etc.); see above.
E05 Calculation method
The TME400 enables calculation of gas parameters, particularly the
compression factor according to various methods. These methods
must be adjusted in coordinate E05 with the corresponding number.
Available for selection:
0 Constant compression factor (default)
1 Gerg88S
2 AGA8 GROSS method 1
3 AGA8 GROSS method 2
4 AGA NX19-mod. (relative density)
5 AGA NX19-mod. (standard density)
6 GOST30319-2
The application of these calculations have been verified in the range
of:
Temperature: -25°C to +60°C
Pressure:
0 bar to 40 bar (absolute)
The calculation method also carries out checks on the approved in-
put variables (e.g. temperature, pressure, standard calorific value,
etc.). If the limits are exceeded, the calculation is performed with the
default value of the compression factor. In this case, the device dis-
plays an error. The volumes are then summarized in the error total-
izer.
Compression factor constant
The simplest option is to set to the compressibility to constant. This
is correct if you always work with the same measuring gas and know
the compression factor. Enter this compression factor in E02. The
compression factor is set to "1" for an ideal gas (e.g. gases at low
pressure).
Complete gas analyses are not necessary for any other gas models,
but knowledge of additional gas parameters is necessary. Depend-
ing on the model, this must be entered in coordinates E07 to E12:
E07 Standard calorific value Ho n kWh/m 3
E08 Standard density Rho n kg/m 3
E09 Relative density DV
E10 Percentage of carbon dioxide CO
2
mol-%
E11 Percentage of nitrogen N
2
mol-%
E12 Percentage of hydrogen H
2
mol-%