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Form 536 (08.13) ©SOR Inc.

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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

No.1

SPDT

Blue (C)

Black (NO)

Red (NC)

Green (GND)

Differential Pressure

1 2 3 4 5 6 7 8

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