Analogue Output; Pressure Switch - Parker Controller Family Manual De Uso

11.

Analogue output

11.1

Pressure switch

The pressure switch is equipped with two standardised output signals
from 0-20 mA and 4-20 mA. It is also possible to adjust the initial and
upper range values.
This is a prerequisite for compatibility with existing systems and systems
with pressure peaks.
When a danger exists of excessively high pressure peaks which could
exceed the indicated overload pressure, use a pressure switch with a
higher device pressure and match the analogue output with your applica-
tion.
Example:
System pressure: 100 bar
Pressure peaks P(max): 600 bar
An output signal from 4-20 mA for 0 to 90 bar is required.
The resulting value for the settings are:
AnA = 4-20
FroM = 0000
to = 90
Analogue output 4-20 mA (refer to menu option
AnA).
0 bar = 4 mA (refer to menu option FroM).
90 bar = 20 mA (refer to menu option to).
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