default setting: 0.00
4.2.3.1.5 DEv ( Deviation band )
This option will only appear if the alarm action is set for deviation, and it signifies the
amount, as a percentage of the engineering range that the input variable may vary
before the alarm condition is activated. This is illustrated in the example below.
The deviation alarm creates two alarm trigger points; one above and one below the
setpoint. The trigger points are equally distant from the setpoint. This is known as the
deviation band and is a percentage engineering range.
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