Instruction manual

XWEB 3000 – rel.1.7–
1592010600 Pag. 85 / 136
3.4.6 PERFORMANCE METER
The value added by this new software tool is remarkable: possibility to check the correctness of
the compressor rack size; possibility to check the proper functioning of each device; statistics data
collection.
Firstly go to “Data” then “Performance meter”. Secondly go to “Class” menu and then choose
“Create class”. Fill in as the following:
Class Name: the name of the class, usually corresponds to the name of the tipology you have
already created.
Typology Filter: let you filter between different typologies.
Set point: let you choose between more than one set point (if available)
Probe: let you choose which probe you want to use to calculate the average temperature.
Sampling (min.): period of time to use for collecting data samples
Avg. Factor: this number will be multiply by the “Sampling” to obtain the average time interval
length. This value is computed to calculate the average value for the interval.
Normal Range (min. and max.): the user can add a temperature interval. When temperature is
out of this range the slide bar will be colored with red.
Defrost offset (min.): elapsed time to count before starting camputing the maximum temperature
reached after a defrost.
The following picture shows how XWEB computes the maximum value of temperature (Max) and
the maximum value after a defrost (Tdef). The former is computing by subtracting the time interval
[A,B]. The latter depends on the parameter “Defrost Offeset”, so the system computes Tdef by
subtracting the time interval [A,C].