11 Menu description
11.8 Menu 6: Density table 1/density calculation
11.8 Menu 6: Density table 1/density calculation
o
Entry of up to 10 temperature values and density values of a density table in ascending order
o
Enables temperature compensation and mass calculation of the flow values
o
The density table can be requested from the supplier of the liquid.
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Changes only possible with password
o Ä
Menu item
Description
6.01 Density table 1
Point 1
...
6.10 Density table 1
Point 10
Example with a density value:
o
Point 1
: Temperature value and associated density value
o
Point 2
: Density value
0
Example with three density values:
o
Point 1
: Temperature value and associated density value
o
Point 2
: Further temperature value in ascending order and associated density value
o
Point 3
: Further temperature value in ascending order and associated density value
o
Point 4
: Density value
0
Note:
The number of density table values is limited by the input of the density value
0
. A density value for
the minimum and maximum temperature respectively is added automatically to the density table. The
value for the minimum temperature (-40 °C) is determined internally by extending the linearizations
between the first two points. The value for the maximum temperature (200 °C) is determined internally
by extending the linearizations between the last two points.
If only one density value is entered, display with a mass unit without connection of a temperature
sensor is also possible. Prerequisite is that the process temperature is constant and is known and that
the density at this temperature has been entered.
6.20 Density
calculation
For consumption measurement of heavy fuel oil engines, the density calculation for fuel oils should al-
ways be used. The density calculation is always implemented at liquid temperatures below 70 °C for
diesel, and from 70 °C for heavy fuel oil. For this purpose, density must be entered at 15 °C for both li-
quids. The density calculation is implemented in accordance with PTB and DIN 51757 Process B for
fuel oils.
36
OIE 12en-GB Edition 2020-03
Operating instructions