Copyright 2022 Dial Instruments Pte Ltd
Optical Interface Measurement Sensor OX

Optical Interface Measurement Sensor OX


Product Description


Interface of two liquids having different clearness, sludge blanket level


  • Insensitive to contamination
    • Modulated infrared minimizes affection from contamination
  • Insensitive to external light interference
    • Infrared source uses frequency band with only limited interference, and the circuit response only to the modulated light.
  • Long service life
    • The pipe inserted in the tank is made in FEP (fluoric material) that resists chemicals and high temperatures. The material also prevents buildup and contamination.

Principle of Operation

Principle of Operation   The sensor has two detector rods. One of the detectors has a transmitter and the other a receiver at the end, oriented to face each other.

The sensor compares the amplitude of the transmitted and received light to know material presence. For example, when the detectors are in the water, the transmission amplitude decreases only a little, whereas, in sludge, the amplitude of received light is significantly decreased.

The sensor measures the decrease in amplitude and gives an output signal.
Copyright 2022 Dial Instruments Pte Ltd