OPERATION
6
59
H250 M40
www.krohne.com
03/2020 - 4000640706 - MA H250-M40 R06 en
ALARM LOW
Error indication via the current loop is activated (failure signal "low" acc. to NE43).
Note:
Note:
Note:
Note:
1) This function is not available in HART
®
multi-drop mode.
2) This function is supported from ER 2.2.x.
3.11 F.S. & UNIT
3.11 F.S. & UNIT
3.11 F.S. & UNIT
3.11 F.S. & UNIT
By changing the unit, the respective final value is scaled accordingly. Depending on
calibration, either units for volume or mass flow measurement are available for selection.
3.11.1 MEAS'D VALUE
For units for volume flow or mass flow, refer to
Overview of the units ESK4-T
on page 44.
3.11.2 COUNTER
For units for volume counter or mass counter and pulse output, refer to
Overview of the
units ESK4-T
on page 44.
3.12 USER DEFINED
3.12 USER DEFINED
3.12 USER DEFINED
3.12 USER DEFINED
User-defined unit with conversion to calibrated unit.
3.13 L.FL.CUTOFF
3.13 L.FL.CUTOFF
3.13 L.FL.CUTOFF
3.13 L.FL.CUTOFF
L.FL.CUTOFF stands for low flow cutoff.
To ensure a stable zero point of the current output, the current output can be set to a
stable value of "4.00mA"
3
in a selectable range.
3.13.1
CONTROL OFF
LFC function is not active.
CONTROL ON
L.FL.CUTOFF function is active.
3.13.2 ON VALUE
Switch-on value
1
:
Value range 1
…
19% (of full scale range)
The flow is greater than the switch-on value. The current output corresponds to this.
If the flow rate falls, the current output follows until the switch-on value
1
.
If the flow value continues to fall, the current output is switched to "4.00mA"
3
.
Note:
Note:
Note:
Note:
The switch-on value to be set must be smaller than the previously selected switch-off
value.
3.13.3 OFF VALUE
Switch-off value
2
:
Value range 2
…
20% (of full scale range)
The flow rate is 0. The current output is "4.00mA"
3
.
If the flow rate increases, the current output remains at "4.00mA" until it has reached the
switch-off value
2
.
Note:
Note:
Note:
Note:
The switch-off value to be set must be greater than the previously selected switch-on
value.
3.14 DESCRIPTOR
3.14 DESCRIPTOR
3.14 DESCRIPTOR
3.14 DESCRIPTOR
12 digits
Free text input for header in LCD
3.15 ENTRY CODE
3.15 ENTRY CODE
3.15 ENTRY CODE
3.15 ENTRY CODE
Entry code for the local operating menu.
The entry code is not active by default.
3.15.1 OFF
The use of an entry code is not activated.
3.15.2 ON
If "YES" is selected, the last code that was entered has to be typed in.
Factory code:
→
→
→
^
^
^
↑
↑
↑
If, after confirmation with "YES", the
→
key is pressed additionally, then a new, individual,
nine digits code can be typed in.
The display shows the required key combination.
3.16 DEFAULT VAL.
3.16 DEFAULT VAL.
3.16 DEFAULT VAL.
3.16 DEFAULT VAL.
Resetting parameters to factory default.
There is always a safety prompt ("YES / NO"), to avoid accidental resetting.
Table 6-14: Menu description - 3 INSTALLATION
Selection / Input
Explanation