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Operating Manual / Piston Pressure Switch
3 Structure and function
3.1 Structure
The piston pressure switch fundamentally consists
of the following components:
(1) Housing
(2) Microswitch
(3) Adjusting element
(4) Compression spring
(5) Spring plate
(6) Piston
(7) Nozzle
3.2 Function
The pressure switch functions on the basis of
the piston-spring principle. The microswitch (2)
is actuated if the pressure lies below the
configured value. The piston (6) acts against
the spring plate (5) when pressure builds up.
This braces itself against the continuously-
adjustable compression spring (4). The piston
(6) transfers the force onto the spring plate (5)
when the configured pressure is reached on
the nozzle (7), enabling the microswitch (2)
and
triggering
an
pressure to be monitored is determined by the
preload tension of the spring (4). Adjustment is
achieved by turning the adjusting element (3).
Anticlockwise rotation reduces the switching
pressure, while turning in a clockwise direction
increases
the
adjusting element (3) is fixed with the securing
screw and fixing cover.
prevents the compression spring (4) from
seizing due to excessive turning.
3.3 Adjusting elements
Three adjusting elements can be selected for
setting the pressure.
The adjusting screw cover
The adjusting knurl with scale
The lockable adjusting knurl with scale
(except for DS-1** series)
6
electrical
signal.
The
switching
pressure.
The
A mechanical stop
BA-KDS/GB/2010-REV1
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