Nivus NFP, Инструкция по эксплуатации

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Instruction Manual
NIVUS Full Pipe
page 52 NFP - rev. 04 / 23.05.2018
>Output span<
Possible output span 4-20 mA or 0-20 mA.
>Value at 4mA<
Input of measurement values at 4 mA. Negative values can be en-
tered as well.
Example: A measurement place is partially tending to backwater for-
mation. Negative values shall be recorded as well, the following re-
cording or process conducting system however has only one analog
input left available. In this case the analog output signal is set to have
a “floating” behaviour.
This means that flow = 0 is going to output a mA signal in the middle
of the measurement span.
4 mA = -100 l/s
20 mA = 100 l/s
In this case the signal output is 12 mA if flow = 0. Backwater will
cause the analog signal to decrease, positive flow will cause the sig-
nal to increase.
>Value at 20mA<
Enter the measurement value at 20 mA.
>Error mode<
Options: active/not active.
If this mode has been unlocked by setting to “active” two other points
will be added to Fig. 29-10/1.
>Error input mask<
Tick the box of the elements to check: sen-
sor, sensor status, temperature and battery
(Fig. 29-11/1).
Select the desired function with the >up< or
>down< arrow keys and confirm with EN-
TER. The function checkbox is ticked after
confirmation.
Pressing ENTER once again will de-select
the function. Use ESC to exit.
All errors are written into the error memory
(see “27 Operation Mode (RUN)” / “Error
message“).
>Value at errors<
This parameter is to define the desired ana-
log output condition if an error should occur.
The following functions are available
(Fig. 29-11/2):
- hold old value
- constant 0,0 mA
- constant 3,5 mA
- constant 4,0 mA
- constant 21,0 mA