What is this?

This knowledgebase contains questions and answers about PRTG Network Monitor and network monitoring in general.

Learn more

PRTG Network Monitor

Intuitive to Use. Easy to manage.
More than 500,000 users rely on Paessler PRTG every day. Find out how you can reduce cost, increase QoS and ease planning, as well.

Free Download

Top Tags

View all Tags

Monitor for specific Change of a Sensor Value



Want this feature implemented, too? Please upvote by clicking Thumbs up!

(Posts as a reply won't be published in this feature request thread. Read Me!)

User Story

As a PRTG User, I want to get informed when a sensor's value (for example a temperature probe) experiences a sudden change in value without reaching the warning or error thresholds. Basically trigger an alarm based on |dx/dt| > Delta.

Details of User Story

There are certain measurements where a sudden change (over the course of let's say 30-60 seconds) isn't beneficial for the device we monitor. The "long term" minimum or maximum values haven't been reached but there might have been a sudden rise in power demand or a steep increase in temperature (rack door opened). It would furthermore allow the monitoring of constantly increasing processes (pages printed counter) and the alarming if a threshold gets exceeded between one or more measurements (huge print output in a short time). Some things can be achieved using the Unusual sensor detection, but the required granularity isn't possible.

Acceptance criteria

  • Maximum Delta Value
  • Timespan over which this Delta is evaluated
  • Alarm on Rising, Falling or both change directions



add-feature alarm change-trigger

Created on Dec 24, 2019 8:34:27 AM


Nobody has replied yet

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.