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Function, Parameter name
Input Range
Description
Hold – last measured value
Hold – last measured value: 4 – 20 mA (retains the last measured value in the event of
an error)
22 mA: 4 – 20 mA (in case of error 22 mA fault current)
Set value:
“DEVICE SETTINGS” window / “Outputs” tab – „Current output -> Error
indication” parameter.
Assignment of 4 mA (P16)
Value corresponding to 4 mA
output current
Select: Enter a value from 0 mm** to
a value lower than that entered for
“Assignment of 20 mA” parameter.
This function defines the lower limit of the analogue measuring range (Assignment of 4 mA).
The value of this parameter always has to be lower than the value selected for “Assignment
of 20 mA” (P17)
Set value:
“DEVICE SETTINGS” window / “Outputs” tab – „Current output -> Assignment of
4 mA” parameter.
As per order
Assignment of 20 mA (P17)
Value corresponding to 20
mA output current
Select: Enter value higher than the
value selected for „Assignment of
4 mA” up to tank height or the
maximum volume table (VMT)
value***
This function defines the upper limit of the analogue measuring range (Assignment
of 20 mA).
The value of this parameter must always be:
– Lower or equal to the value selected under “Tank height” (P05) or the maximum volume
table (VMT) value,
– Higher than the value selected under “Assignment of 4 mA” (P16), otherwise an error
message will appear during parameter check.
Set value:
“DEVICE SETTINGS” window / “Outputs” tab – „Current output -> Assignment of
20 mA” parameter.
As per order
Error delay (P13)
Select: No delay, 10 sec., 20 sec., 30
sec.,
1 min., 2 min., 5 min. or 15 min.
This menu is only available when “22 mA” has been selected under “Error indication”.
With this parameter, a time delay can be defined for transition of the current output to 22 mA
after an error has been noted.
During the delay, the measuring and the analogue outputs are hold on. When the error
disappears, the delay also serves to return to the measuring mode.
No delay
* complete VM table (VMT) before selecting “volume” or “ullage volume”.
** or other unit selected in “Length Unit”, „Volume Unit” depending in the item selected in “Current generator mode” Item.
*** depends on value selected in “Current generator mode”.
Special device identification
information
Parameter path:
“DEVICE SETTINGS” window (Advanced mode) / “Special” tab