SOR 805QS Pressure Switch-Transmitter - Manual (Page 4)

4/8 Form 1547 (10.13) ©SOR Inc.
Electrical Termination - 805QS-V
Drawing 0190323
NOTE: An external ground screw is included for additional earth ground connection.
72” flying leads are provided for con-
nection to a terminal strip within a
cabinet or a splice within an outlet box:
Red (+) 8-30 VDC + Power Connection
Black (–) Power Supply Ground
Orange Switch Contacts;
Yellow Normally-Open Solid-State Relay
Blue 1-5 VDC Output
Green Earth Ground
White Calibration
(Requires SOR Calibration Kit)
Brown Not Used (trimmed at factory)
Bare Drain Wire - Connected to
Earth Ground (trimmed at factory)
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Switch Operation
The 805QS switch output is a solid state, normally open relay that is rated to 30V,
120mA. This switch can be configured three different ways depending on your
application requirements as noted below. Specific switch action can be requested
at the time of order or can be selected via the optional SOR Calibration Kit at any
time. In all three configurations, the fail-safe state for the 805QS switch output will
be open (i.e., if power is removed from the 805QS, the switch contacts will open
automatically). Please note that the 805QS has a ± 2% URL accuracy tolerance
around each switch setpoint. For best results, SOR recommends the use of some
form of switch latching logic in conjunction with the 805QS.
NOTE: Make certain you are using SOR Calibration Manager software version 3.0.0.6 or greater.
Pressure “Window” Monitoring – This is the default configuration for the 805QS
switch output. In this mode the switch output is closed when the process pressure is
within a user selectable range and open when the pressure is outside of these bound-
aries. This is designed for applications where there is a known acceptable operating
pressure range. For example, the “window” could be set for an acceptable operating
range of 50PSI to 150PSI. The 805QS switch output will be closed when the pressure
being monitored is between 50 and 150 PSI. If the pressure goes below 50PSI or
above 150PSI, the 805QS switch output will open. (See
)