Liquid level sensors

  • Overview
  • Documents
  • Tools and apps
  • Support

New levels of flexibility and accuracy

The AKS 4100 liquid level sensor takes you to a whole new level of flexibility and accuracy. With TDR guided radar technology, the sensor is fully adapted to industrial refrigeration – reliable and with high accuracy.

All sensors are easy to install and fully flexible. No on-site calibration is needed, and you can easily adjust the probe length on site.

Features and benefits

Easy commissioning regardless of liquid level or refrigerant type – including ammonia and CO2

Available with cable or coaxial (sleeve) tube

High accuracy

Photo of the Danfoss AKS 4100 liquid level sensors either underwater or in some kind of sky/dream sequence. I am not really sure and we should probably change it.

A whole new level of flexibility and accuracy

Learn more about all the benefits of our liquid level sensors in our brochure.


Type Name Language Valid for Updated Download File type
Brochure A whole new level of flexibility and accuracy - The AKS 4100 - Liquid Level Sensor English Multiple 26 Mar, 2015 561.2 KB .pdf
Installation guide AKS 4100 / AKS 4100U Liquid Level Sensor - Cable version English; Japanese; Russian; Chinese (CN) Multiple 06 Jul, 2022 12.9 MB .pdf
Installation guide Liquid Level Sensor AKS 4100/4100U - Coaxial D14 English; Japanese; Russian; Chinese (CN) Multiple 06 Jul, 2022 16.6 MB .pdf
Data sheet Liquid level sensor, type AKS 4100 and AKS 4100U English Multiple 31 Jan, 2023 3.9 MB .pdf
Data sheet Trouble shooting - Liquid level sensors, AKS 4100/4100U English Multiple 02 Jan, 2017 2.4 MB .pdf

Tools and apps

Photo Industrial refrigeration application products in a system but often used represent the industrial refrigeration application tool by Danfoss

Industrial refrigeration application tool

Want to know more about industrial refrigeration with ammonia? The IR application tool is an interactive PowerPoint slideshow that takes you through all details of a two-stage ammonia plant. By clicking on a specific area of the plant, you will be provided with detailed cut-away drawings and information on the specific valves required. You will also find useful links to technical literature, product animations and videos.