SOR Adjustable Dead Band Weatherproof Pressure Switch - Manual

Form 466 (05.13) ©SOR Inc. 1/4
These instructions provide information for installation, process
and electrical connections and field calibration of SOR
® Adjustable
Dead Band Pressure Switches.
The pressure sensing elements are a pair of force-balanced, piston-
actuated assemblies sealed by flexible diaphragms and o-rings that
are static. The only wetted parts in this arrangement are the single
pressure port, two sensing assembly diaphragms and o-rings.
Media pressure on the area of the pistons counteracts the force of the
range springs (adjustable by the adjusting nuts), which moves the piston
shafts only a few thousandths of an inch to operate the lever assembly which actuates and
deactuates the electrical switching element.
Adjustable Dead Band
Pressure Switches
General Instructions
Failure to place washers between the housing and the mounting surface
may result in torsional forces on the housing that could cause false trips
or render the pressure switch inoperative.
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.
Installation
Adjustable Dead Band Pressure Switches may be secured to bulkheads, panels or pipe
stanchions with suitable bolts. When mounting the pressure switch to an irregular or
uneven flat surface, install rubber washers on the mounting bolts between the housing and
the mounting surface.
Line mounting by either the process connection or the electrical conduit connection is not
recommended.
Design and specifications are subject to change without notice.
For latest revision, go to www.sorinc.com
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t
the
piston
Failure to mount the housing on a fl at mounting surface may result in
torsional forces on the housing that could cause false trips or render the
pressure switch inoperative.