Resistive
Resistive sensors are mainly used to measure the concentration of liquids. Among other things, in the purity detection in water injection systems for gasoline engines.
Resistive sensor technology utilizes the effect of changing ohmic resistance. This method is primarily used at AST for measuring the concentration or purity of liquids. In this context, the liquid’s conductivity is determined by means of two or more stainless steel pins inserted into the liquid.

Battery Coolant Fluid Sensor
Sensor for property monitoring of Electrical Vehicle Battery Coolant Liquid (direct cooling topologies)
Water Injection Sensors
Sensors for measuring the liquid level and the degree of purity for water injection systems