JCQM6700 Multi-Parameter Hydraulic Fluid Quality Sensor

Real-time monitoring of eight parameters in lubricating oil, including viscosity (kinematic viscosity, dynamic viscosity), density, wear particle concentration, dielectric constant, water activity, water content in ppm, free water content, and temperature

Product Features

Wide range of applications; suitable for all types of lubricating oils

Simultaneous measurement of multiple parameters to promptly detect oil contamination and degradation, helping users optimize oil change intervals

Big data oil analysis algorithms to assist customers in solving diagnostic challenges, with built-in health index analysis

24/7 uninterrupted monitoring for timely feedback on oil condition

High compatibility; supports CAN-J1939 and RS485-Modbus RTU

Suitable for monitoring under high-flow conditions; superior interference resistance compared to similar sensors; rugged and durable

Integrated design for easy installation

Product Overview

The JCQM6700 Multi-Parameter Oil Quality Sensor is designed for real-time, online monitoring of lubricant health. By continuously monitoring oil condition, it enhances condition-based maintenance efficiency, optimizes oil change intervals, and reduces reliance on offline analysis.

The JCQM6700 integrates Electrochemical Impedance Spectroscopy (EIS) technology to measure oil impedance spectra, ultrasonic viscosity monitoring technology to measure oil viscosity and density, and trace moisture monitoring technology to detect trace moisture and water activity in the oil. It can also monitor dissolved water and free water, thereby determining the oil’s health status. Based on Jiecheng IoT’s years of experience in online oil monitoring, it analyzes the oil health index. It evaluates the depletion of lubricant additives, monitors the degree of oil aging, and assesses the contamination status of the oil.

The JCQM6700 helps users improve the health management of equipment assets. Based on real-time monitoring results, it assists in maintenance decisions, preventing abnormal wear and corrosion of equipment caused by oil aging and contamination.

Application Areas

Lubricating oil is the “lifeblood” of major equipment. Lubricant failure directly leads to abnormal wear of mechanical structures and critical functional components, serving as the primary cause of large-scale equipment failures and catastrophic accidents. The JCQM6700 provides 24/7 uninterrupted monitoring of oil aging and contamination levels within the oil circuit, providing real-time feedback on the oil’s operational status. It helps users prevent or mitigate equipment failures caused by lubricant failure.

The JCQM6700 is widely applicable across industries such as power generation, mining, cement, shipping, defense, industrial manufacturing, papermaking, petrochemicals, transportation, metallurgy, aviation, oil fields, and ports. Specific applications include wind turbine gearboxes, aircraft/helicopter gearboxes, hydraulic transmission systems, machining centers, steam turbines, gearboxes, and gasoline/diesel engines.

Technical Specifications

Dielectric Constant

Dielectric constant: 1–10;

Dielectric constant accuracy: ±0.01 (absolute accuracy);

Water Activity

Measurement range: 0 … 1 aw

Measurement accuracy: 0 … 0.6      ± 0.02 aw

0.6 … 0.9     ± 0.03 aw

0.9 … 1      ± 0.04 aw

Response Time (Typical) < 1 minute

Dissolved Water Content

Measurement Range: 0…10,000 ppm, 0–1% (applicable to mineral-based transformer oil)

Measurement Accuracy: ± 10%

Free Water Content:

Range (Absolute Accuracy): 0–5% (±0.1%), 5%–inversion point (±2%), 0–100%

Temperature Stability: 0.01% water/°C

Resolution: 100 ppm

Viscosity Parameters:

Kinematic Viscosity: 1–10,000 cP    Accuracy: 2%

Kinematics Viscosity: 1–12,000 CST   Accuracy: 2%

Density Parameters:

Measuring Range: 600 kg/m³–1,300 kg/m³

Accuracy: 2%

Temperature

Measuring Range: –40 ... 120 °C

Accuracy (at +25 °C): ±0.2 °C

Operating Temperature: –40 ... +85 °C

Storage Temperature: –40 ... +85 °C

Permissible Oil Temperature: –40 ... +120 °C

Health Index: 0–100

Output

Digital Signal: RS485 MODBUS-RTU (RS232 optional)

Analog Signal: 4–20 mA, 0–20 mA (resistive load <500 Ω)

Other

Mechanical Interface: M36×1.5

Pressure Range: Up to 30 bar

Probe Material: 316 Stainless Steel

Protection Rating: IP67

Power Supply: DC 9 V–36 V

Supply Current: < 5 mA + load current

Transmitter Weight: < 300 g

Total Package Weight: < 370 g

Cable Specification: M12, 5-pin

Cable Length: 2 m

Compliance Standards: CE Certified EN 61326-1, EN 61326-2-3, ICES-003 Class B