KROHNE CORIMASS G-MFM 4085 EN - Manual (Page 53)

53
If the current output is used to indicate the direction of flow the output is as follows :
Flow Current
pos.
20 mA
neg. 0 or 4 mA depending on range.
Where the current range has a warning state, the output will jump to this current level when the
meter detects an abnormal condition. When the condition clears, the current output returns to
normal automatically.
To program the density example above:
Begin from measuring mode
If during operation the density measured falls outside the set maximum and minimum limits, the
output is said to be saturated. This may cause problems with external instrumentation.
Saturation may be indicated to the customer using either the process alarm (section 5.7) or the
status warnings (section 5.12.).
If the output function is set to OFF or to DIRECTION then sub-menus Fct. 3.3.3 and Fct. 3.3.4
are not available.
Key Display
line 1
line 2
→
Fct. (1).0 OPERATOR
2x
↑
Fct. (3).0 INSTALL
→↑↑
Fct. 3.(3).0. CUR.OUTP.I
→
Fct. 3.3.(1). FUNCTION I
→
(TEMPERATUR)
↑
(VOLUME.FLOW)
: (OFF)
: (MASS FLOW)
↑
(DENSITY)
↵
Fct. 3.3.(1). FUNCTION 1
↑
Fct. 3.3.(2). MIN.DENSITY
→
Input of min. value.
↵
Fct. 3.3.(2). MIN.DENSITY
→
Fct. 3.3.(3). MAX.DENSITY
→
Input of max. value.
↵
Fct. 3.3.(3). MAX.DENSITY
↑
Fct. 3.3.(4). RANGE I
→
(0-20/22mA)
↑
(2/4-20mA)
↑
(3.5/4-20mA)
↑
(0-20mA)
↑
(4-20mA)
↵
Fct. 3.3.(4). RANGE I
4x
↵