I have a sensor that is powershell script that returns temperature by parsing web page of some meteostation on a public internet.

It sometimes returns a bad high value like "0" or "255" and all other values in the last days are from -17 to -4

So do enter spike filtering with maximum -4 and minimum 20 and wait. It never filters out the spikes, they are still there and the system has hardly 20 sensors (at 1 minute intervals) on i7 machine, so it cant take long to process them.

Article Comments

Attention: This article is a record of a conversation with the Paessler support team. The information in this conversation is not updated to preserve the historical record. As a result, some of the information or recommendations in this conversation might be out of date.

Using Spike Filters

You can add spike filters in a sensor's channel settings. Each filter is valid for the selected channel only. Spike filters are active immediately after saving. They are applied to historic and live data in both tables and graphs.

  • Enter a number into the Spike Filter Max. Value. Values above this value will be disregarded.
  • Enter a number into the Spike Filter Min. Value field. Values below this value will be disregarded.

As you're using negative values, please try to exchange the two numbers.

See Also

Why do I see huge peaks or spikes in graphs for SNMP sensors?


Dec, 2010 - Permalink