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SOR 815DT Smart User Manual

Page 6

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Form 1588 (09.14) ©SOR Inc.

In this configuration, the switch output will be closed for pressures less than the
selected setpoint. The switch output would then be open for pressures greater than
the setpoint.

Single Point, Normally-Closed (Open on Rise/Close on Fall)

Pulse Width Modulation - Pulsed Lo

Pulse Width Modulation - Pulsed Hi

The diagram above depicts an adjustable dead band. Dead band is the range through
which an input can be varied without initiating an observable response. Dead band is
usually expressed in percent of span.

EXAMPLE: A 20% total dead band is applied to the setpoint of a monitored parameter.
The relay will turn on and off as indicated in the graph above.

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Dead Band