OVERVIEW:
H20PS(M)
series pressure switch is a more advanced
miniature pressure switch in the world. It is
one of the electrical switches that control the
circuit open or close on pressure of the
controlled medium increase or decrease. It is
used widely in refrigeration system, oil pump,
air pump and the other industrial equipment
which require to adjust the medium pressure to
protect system.
WORKING PRINCIPLE:
The working
principle of H20PS series pressure switch is:
When the pressure of the controlled medium rises
to a predetermined £¦#118alue, the snap disk will
snap act to drive a set of electrical contacts
by means of a transfer pin. When the pressure of
the controlled medium drops below another
predetermined £¦#118alue, the snap disk will snap
to the original state, to make the contact
terminal close (or open). In this way the switch
function is realized. There is a slight
difference between the working principle of
H20PSM series pressure switch and of H20PS
series pressure switch: When the pressure of the
controlled medium decrease, the switch can no
reset automatically. And just only as the push
button is pressed, the circuit will reset to the
original state.
