SOR Weatherproof Low Range - Manual (Page 3)

Form 536 (08.13) ©SOR Inc. 3/8
Wiring Schematic
Electrical Connection
Ensure that wiring conforms to all applicable local and national electrical codes and install
unit(s) according to relevant national and local safety codes.
SOR Series 20 Differential Pressure Switches have 18”, 18-AWG, color-coded wire leads
which extend switching element contact circuits through a glass-to-metal seal. The
glass-to-metal seal assembly maintains Lo side pressure containment. Use two wrenches,
one on the seal assembly and one on the conduit fitting to avoid movement of the seal
assembly during installation.
2-SPDT
Blue (C)
Black (NO)
Red (NC)
Yellow (C2)
Brown (NO2)
Orange (NC2)
Green (GND)
Differential Pressure
No.2
HI
No.1
LO
SPDT
Blue (C)
Black (NO)
Red (NC)
Green (GND)
Differential Pressure
HI
LO