Liquid level sensors

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

A whole new level of flexibility and accuracy

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

Read brochure

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.

Documents

Documents
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	Multiple	23 Sep, 2025	13.0 MB	.pdf
Installation guide	Liquid Level Sensor AKS 4100/4100U - Coaxial D14	English; Japanese; Russian; Chinese	Multiple	23 Sep, 2025	16.7 MB	.pdf
Data sheet	Liquid level sensor, type AKS 4100 and AKS 4100U	English	Multiple	23 Sep, 2025	2.5 MB	.pdf
Data sheet	Trouble shooting - Liquid level sensors, type AKS 4100 and AKS 4100U	English	Multiple	14 Sep, 2023	3.7 MB	.pdf

Tools and apps

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.

Discover more about the tool

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

Support

Set Up and Configuration of a Danfoss AKS4100U Liquid Level Sensor

Introducing the Danfoss Liquid Level Sensor and its Components

How to Install a Danfoss AKS4100U Liquid Level Sensor