JCKZ-4 Oil Clarity Sensor

JCKZ-4 Oil Contamination Sensor

Real-time monitoring of dust particle count in lubricating oil

GJB420B-06, GJB420A-96, NAS1638, ISO4406

Product Features

Operates on the principle of the light-blocking method (optical blockage method);

Incorporates particle contamination grade standards such as GJB420B-06, GJB420A-96, NAS1638, and ISO4406:1999 (GB/T14039-2002), providing real-time particle counts and contamination grades for the tested samples.

Can be calibrated according to ISO 4402 or ISO 11171;

Equipped with a standard RS485 serial interface, allowing connection to a computer for control and storage of test results;

Supports storage of test results on an external USB flash drive (optional feature);

Real-time data enables real-time monitoring of wear trends in hydraulic systems.

Product Overview

The JCKZ-4 Particle Counter employs the light extinction method (also known as the extinction method or light blockage method) specified in ISO 4402/ISO 11171 for oil contamination testing. It offers advantages such as fast testing speed, strong anti-interference capability, high accuracy, and excellent repeatability.

The principle of the light extinction method is illustrated in Figure 2-1. A parallel light beam passes perpendicularly through a sample flow chamber with a cross-sectional area of A and strikes a photodetector. When there are no particles in the fluid flow, the circuit outputs a voltage of E. When a particle with a projected area of a passes through the sample flow chamber, it blocks the parallel light beam, causing the transmitted light to attenuate. At this point, the circuit outputs a negative pulse with an amplitude of E:

E = (a/A) × E                 If the particle is spherical, or described by an equivalent diameter d, and E equals 10V, then

E = 7.854 × d²/A         That is, there is a linear relationship between the particle’s projected area and the pulse voltage amplitude.

Applications

The JCKZ-4 Particle Counter is designed based on the light-blocking (optical blockage) principle and is used for real-time online monitoring of particle contamination in hydraulic system oil circuits. It is widely applicable for detecting solid particle contamination in hydraulic oil, lubricating oil, transformer oil (insulating oil), turbine oil, gear oil, engine oil, jet fuel, water-based hydraulic fluid, and other fluids used in the aviation, aerospace, power generation, petroleum, chemical, transportation, port, metallurgy, machinery, and automotive manufacturing industries, as well as for detecting particulate impurities in organic liquids and polymer solutions.

Technical Specifications

Light Source: Semiconductor laser;

Detection Range: 1–100 μm or 4–70 μm (C);

Sensitivity: 1 μm (ISO 4402) or 4 μm (C) (ISO 11171, GB/T 18854-2002);

Measurement Channels: Built-in standards including GJB420A-96, GJB420B-06, NAS1638, ISO4406, etc.;

Particle Size: 1 µm, 2 µm, 5 µm, 10 µm, 15 µm, 25 µm, 50 µm, 100 µm; 4 µm(c), 4.6 µm(c), 6 µm(c), 10 µm(c), 14 µm(c), 21 µm(c), 38 µm(c), 70 µm(c),

Test accuracy: ±0.5 contamination grades;

Operating pressure: 0–10 MPa; 0–40 MPa (with pressure reducing valve);

Test flow rate: 50–300 mL/min;

Oil temperature: <80°C;

Ambient temperature: -30°C to 60°C;

Storage temperature: -55°C to 85°C

Power supply: 9–30 VDC, 1000 mA;

Instrument Dimensions: 100 mm × 75 mm × 71 mm (L × W × H);

Humidity: Operates at 20%–85% relative humidity, non-condensing; Storage humidity: 98%;

Connection Type: Standard high-pressure hose; Optional low-pressure ferrule hose with 4 mm inner diameter and 6 mm outer diameter.