Black Box servsensor v4e lite with 20 or 60 vac or vdc dry contacts manual Installation, Page

Chapter 3: Installation

Advanced Mode Functions:

FIgure 3-37. Advanced mode functions, units.

Units: Changes units from C to F or vice versa.

Figure 3-38. Advanced mode functions, rearm.

Rearm: The Rearm parameter is useful for sensors, such as the temperature and humidity sensors, whose values can vary.

This prevents the sensor from flickering between two states. For example, if the Warning High threshold for the temperature sensor is set to 80 degrees, and the sensor temperature varies between 79 and 80, you could be faced with a very large number of e-mails, traps, and events logged. The Rearm parameter prevents this by forcing the temperature to drop by the Rearm value before changing the state back to normal. In this example, if Rearm is set to 2, then the sensor would have to drop from 80 down to 77 before the status would change from Warning High back to normal.

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