Oil cleanliness sensor

1、Oil cleanliness sensor Product Introduction

Oil cleanliness sensor uses the principle of light-blocking (light-obstruction method) to monitor the number and size of particulate impurities in the oil in real time.Oil cleanliness sensor WJ-4 is a sensor designed to monitor the size, quantity distribution, and corresponding contamination level of particles within an oil sample. It offers numerous advantages, including rapid detection speed, strong anti-interference capabilities, high precision, and excellent repeatability; its high-precision sensor ensures both high resolution and accuracy.

2、Oil cleanliness sensor Application Areas

Hydraulic power units, gearboxes, diesel engines, turbines, air compressors, and similar equipment.

3、Oil cleanliness sensor Applicable Oils

Industrial Lubricants: Hydraulic oil, gear oil, turbine oil, transformer oil.

Engine Oils: Diesel engine oil, aviation engine oil.

Light Fuels: Gasoline, kerosene, aviation fuel.

4、Oil cleanliness sensor Measurement Principle

Oil cleanliness sensor employs the Light Extinction method (also referred to as the Extinction or Light Blockage method)—as prescribed by ISO 4402 and ISO 11171—to assess fluid contamination levels.

A parallel light beam passes perpendicularly through a sample flow cell with a cross-sectional area of A, striking a photoelectric receiver. When the fluid stream contains no particles, the circuit outputs a voltage of E. When a particle with a projected area of a passes through the flow cell, it obstructs the parallel beam, causing the transmitted light to attenuate; at this moment, the circuit outputs a negative pulse with an amplitude of E。: E。=-(a/A)×E。

If the particle is spherical—or is characterized by an equivalent diameter d—and E equals 10 V, then E。=-7.854×d/A; that is, the projected area of the particle and the amplitude of the pulse voltage exhibit a linear relationship.

5、Oil cleanliness sensor Technical Parameters