56
NOTE:
Some numerical values have fixed permissible limits. For example, Menu 3.1.2., L.F. CUT
OFF only allows values in the range 0 to 10%. If, for example, the operator tries to enter a
value of 15%, the converter responds as follows :
6.6
Setting the current output (Fct. 1.3. and 3.3)
The current output can be programmed to the following measurement values :
–
Mass
Flow
–
Density
–
Temperature
–
Volume Flow Rate
–
Flow
Direction
For the current output of the MFC 081, five ranges are available :
0 to 20 mA
4 to 20 mA
0 to 20 mA warning state: 22 mA
4 to 20 mA warning state: 2 mA
4 to 20 mA warning state; 3.5 mA
All output ranges will overrange to 20.5 mA. The 4 - 20 mA ranges will under range to 3.8 mA.
All functions except flow direction have a minimum and a maximum value. When the current
output is set to one of these quantities, then the output range (4 to 20 or 0 to 20 mA) will
correspond to the appropriate minimum and maximum (see Fig. 34).
For example, to use the current output for density with the following parameters :
MIN DENSITY = 0.5g/cm
3
MAX DENSITY = 2.0g/cm
3
RANGE 4 to 20 mA
Density
Current
0.50 g/cm
3
4 mA
(minimum)
1.25 g/cm
3
12 mA
2.00 g/cm
3
20 mA
(maximum)
Key
Display
line 1
line 2
15.0
PERCENT
↵
10.0
MAX.VALUE
Press
↵
again to correct the number:
↵
(0)10.0
PERCENT
Re-edit the number or press
↵
again to
accept this value.
