Nova-Tech Digi-Sense Termperature Controller RS (Standard Models) - Manual (Page 15)

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2. Select HILO by pressing the MENU key. The following screen will appear
(refer to Figure 15). Set the alarm temperatures by using the arrow keys.
Once the first alarm value is set, press the LEFT arrow key to adjust for
the other alarm variable.
FIGURE 15. HILO SETTINGS SCREEN
ALARM SP °F
HI XXXX.X LO XXXX.X
2. Set the hysteresis by using the arrow keys.
3. After selecting values, press the MENU key to continue.
FIGURE 16. ALARM HYSTERESIS SCREEN
ALARM HYSTERESIS
XXX.X °F
Alarm Hysteresis
1. Alarm Hysteresis determines when the alarm is going to be out of the
alarm condition. Alarm hysteresis prevents actuation of nuisance, or
recurrent, alarms. Hysteresis is either added or subtracted to the alarm
point, depending on whether a HI or LO ALARM has been set.
For example: If hysteresis is set at 1 degree and the HI alarm has been
set to trigger when the temperature reaches 100 degrees FAHRENHEIT,
the alarm will trigger at 100 degrees. As soon as the temperature drops
below 99 degrees the alarm condition will terminate.