The High Pressure optical liquid level switch uses the principle of total reflection in a prism. Reflection or penetration, is the basis of the level alarm output. When the sensor is surrounded by air, the angle of incidence is greater than the critical angle and thus total reflection occurs.
Totally reflected light will be transmitted to the receiver. Conversely, when the sensor is surrounded by liquid, due to the refractive index of the liquid and the sensor tip material, almost all light will penetrate the front of the sensor.
Using this principle, the optical liquid level switch design is based on light. The receiver can detect and determine a light reflected or penetrated state, and determines the circuit output.
● Pharmaceutical systems
● Air conditioning systems
● Industrial compressors
● Food and beverage systems
● Hydraulic reservoirs
● Machine tools
● Liquid holding tanks
● Processing and packaging equipment
● Heavy duty automotive
The technical and after-sale supports are of great importance to reduce the downtime. EPT Sensor has an efficient service teams that provide to evaluate the pressure transducers, to identify reasons for failure and to analyze the processing environments to advise the most suitable type of sensors. EPT sensors are guaranteed in 2 years with maintenance service.