Technical Specifications

375
Alarm Hysteresis
Advanced Setup
Figure 176 Alarm Low Time Error Message
If the Alarm High time is less than one second, or greater than 600 seconds, an error
message appears (Figure 176).
Figure 177 Alarm High Time Error Message
If the Alarm Low Threshold + Hysteresis is greater than Alarm High Threshold, an error
message appears (Figure 178).
Figure 178 Alarm Low/High Threshold Error Message
Alarm Hysteresis
ValVue 12400 also allows you to adjust the hysteresis value for alarms.
To change the Alarm Hysteresis:
 Enter the new Alarm Hysteresis value.
If you enter an Alarm Hysteresis value less than 0.49% or greater than 50%, an you error
message appears (Figure 179).
Figure 179 Alarm Hysteresis Error Message