Casestudie Breakdown prediction Contell PILOT - Transumo

free text. Moreover it is possible to define an activation delay in minutes. Within that
time no new alarm will go off.
This stored information can be useful to evaluate the condition of a monitored cooling
device. Many alarms due to open doors, for instance, indicate user misbehavior. By
contrast, many alarms due to repair work or maintenance indicate unreliability of the
monitored device. Because of the mentioned problem of unknown influences in
section 2.4, this kind of documentation is very important to get at least some
information of a freezers condition. A significant high number of repair and
maintenance activities lead to the assumption that the monitored device has to be
replaced.
Unfortunately, this documentation possibility is rarely used in real practice. Because
of the high quantity of false alarms, the employees get tired of documentation and
just leave the input fields blank when resetting an alarm.
3.3 XiltriX’s Additional Features
Up to now, the introduction of XiltriX was focused on basic functionality that should
be mandatory for every kind of sensor based temperature monitoring system. In the
following, some additional features will be focused on, that were implemented to
solve some of the existing problems. 23
3.3.1 Different Types of Attachable Digital Switches
One of these features is the opportunity to attach digital switches to XiltriX. These
switches can be coupled to a certain monitored device but do not have to. In general,
there are three configuration possibilities for every digital switch:
1. A door switch
2. A start/stop switch
3. A high/low switch
First of all, it can be configured as a door switch. Coupled to a certain monitored
device, it signalizes every single door opening and closing to XiltriX. Beside the
regularly stored measuring points, an additional value is written to the database in
case of a switching. If a door switch is not coupled to a certain device, it can be used,
for instance, to monitor the room door. If someone opens that door, this information
23 See section 2.4 for details
31