AKS 4100 / AKS 4100U

The AKS 4100/4100U liquid level sensor is designed specifically to measure liquid levels in a wide range of refrigeration applications.
The AKS 4100/4100U liquid level sensor is based on a proven technology called Time Domain Reflectometry (TDR) or Guided Microwave.
AKS 4100/4100U can be used to measure the liquid level of many different refrigerants in vessels, accumulators, receivers, standpipes, etc. The electrical output is a 2-wired, loop powered 4 – 20 mA output signal, which is proportional to the refrigerant liquid level.
AKS 4100/4100U in a cable version is suitable for HCFC, Non flammable HFC and R717 (Ammonia), and differing lengths from 800 mm / 31.5 in. and up to 5000 mm / 197 in.
The coaxial version of AKS 4100/4100U is designed for use with R744 (CO₂ ), HCFC, Non flammable HFC and R717 (Ammonia).
The AKS 4100/4100U coaxial version should always be used for marine applications for all refrigerant types. The AKS 4100/4100U cable version should NOT be used for CO₂ or marine applications.
Dust, foam, vapour, agitated surfaces, boiling surfaces, changes in density or in the dielectric constant , εr, for the liquid have no influence on the AKS 4100/4100U performance.
Oil accumulated in the bottom of a standpipe will not disturb the liquid level signal and it is not necessary to remove AKS 4100/4100U for cleaning after oil has been drained out of the standpipe.