KRAL BEM 500 Series, Руководство по эксплуатации

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Operating Instructions OIE 12en Edition 2019-02 45
Menu 7: Density table 2
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Examples:
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.
In menu 6 "Density calculation" a density
calculation can be carried out. If "Density
calculation" is selected, the menu items Density
table 1 and Density table 2 will not be displayed,
see "2.09 Select density determination", page 38.
6.01 Density table 1 Point 1
► Enter Value 1 of the density table.
6.02 Density table 1 Point 2
► Enter Value 2 of the density table.
The pages of the Density table 1, Point 3 to 10
are displayed consecutively by repeated pressing
of the key ARROW UP. Enter the corresponding
value of the density table respectively.
6.20 Density calculation
For consumption measurement of heavy fuel oil
engines, the density calculation for fuel oils
should always 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 liquids. The density calculation is
implemented in accordance with PTB and
DIN 51757 Process B for fuel oils.
Menu 7: Density table 2
The entry of two density tables is possible if
different fluids are used. Selection of the used
density table is carried out in menu 2 "General
settings", see "2.09 Select density
determination", page 38.
The values of the density table are entered
analog to menu 6.
Density table Input
with 1 density
value
□
Page 6.01: Temperature
value and associated
density value
□
Page 6.02: Density value
"0"
with 2
density values
□
Page 6.01: Temperature
value and associated
density value
□
Page 6.02: Further
temperature value in
ascending order and
associated density value
□
Page 6.03: Density value
"0"
with 3
density values
□
Page 6.01: Temperature
value and associated
density value
□
Page 6.02: Further
temperature value in
ascending order and
associated density value
□
Page 6.03: Further
temperature value in
ascending order and
associated density value
□
Page 6.04: Density value
"0"
6.01 Density table 1
Point 1
Temp: 10.0 °C
Rho: 840.0 kg/m3
6.02 Density table 1
Point 2
Temp: 50.0 °C
Rho: 829.5 kg/m3
6.20 Density calcul.
Density at 15 °C
LDO: 850.0 kg/m3
HFO: 975.0 kg/m3