SOR Omni Weatherproof Pressure Switch - Manual

Form 463 (05.13) ©SOR Inc. 1/4
This instruction covers installation, process connection, electrical
connection and calibration of the SOR
® Omni pressure switches.
Static“O”Ring Type (prefaced by 5, 6, 9 or 1)
OMNI Pressure Switch
General Instructions
Registered Quality System to ISO 9001
NOTE: If you suspect that a product is defective, contact the factory or the SOR Representative
in your area for a return authorization number (RMA). This product should only be installed by
trained and competent personnel.
Design and specifications are subject to change without notice.
For latest revision, go to sorinc.com
cal
s.
The Static“O”Ring type pressure switch with optional wetted
parts is suitable for a wide variety of process applications.
This type is not recommended for high-pressure fluid power
applications where high shock pressure and high cycle rates
are expected. Use the SOR Pivot Seal type (prefaced by 2 or 3)
for fluid power applications.
The pressure sensing element of the Static“O”Ring type
pressure switch is a force-balanced, piston-actuated assembly
sealed by a flexible diaphragm and o-ring. Media pressure
on the area of the piston counteracts the force of the range
spring, adjustable by the adjusting screw, which moves the
piston shaft only a few thousandths of an inch to directly
actuate the electrical snap-action switching element. This
principle of operation virtually eliminates friction and resultant wear.
Pivot Seal Type (prefaced by 2 or 3)
The Pivot Seal type pressure switch is generally suitable for fluid power hydraulic
applications where high shock pressures and high cycle rates are expected and where
only normally industrial clean hydraulic fluid is used. Use Static“O”Ring type for other
process applications.
The pressure sensing element of the Pivot Seal type pressure switch is a force-balanced,
piston-actuated assembly sealed by an o-ring. The piston reciprocates a maximum of
.020 inches. This results in minimal o-ring wear. Media pressure on the area of the piston
counteracts the force of a range spring, adjustable by the adjusting screw, which moves the
piston shaft and the force transmitter to directly actuate the electrical snap-action switching
element. This principle of operation greatly reduces the friction and resultant wear normally
associated with piston-type pressure switches.