JCQM-6801 Multi-Parameter Oil Sensor

JCQM6801 Multi-Parameter Oil Sensor

Real-time monitoring of multiple parameters in lubricating oil, including pressure, liquid level, dielectric constant, dielectric constant at 40°C, water activity, water content (ppm), free water content, wear particle concentration, temperature, and health index

Integrated design

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

Includes pressure monitoring; provides real-time oil level monitoring; prevents abnormal equipment wear caused by excessive or insufficient oil levels

No need for customers to calibrate free water content; the sensor features an automatic calibration function

Big data oil analysis algorithms help customers solve diagnostic challenges and provide built-in health index analysis

24/7 uninterrupted monitoring for timely feedback on oil condition

High compatibility, supporting CAN-J1939 and RS485-Modbus RTU

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

Integrated design with alarm indicator lights for easy on-site inspection

Product Overview

The JCQM6801 Multi-Parameter Oil Quality Sensor is designed for real-time, online monitoring of lubricating oil condition and oil level. By continuously monitoring the oil’s condition, it enhances the efficiency of condition-based maintenance, optimizes oil change intervals, and reduces reliance on offline analysis.

Oil leakage is a major cause of abnormal equipment wear; the oil level monitoring feature provides timely alerts for abnormal oil levels.

The JCQM6801 integrates electrochemical impedance spectroscopy (EIS) technology to measure the oil’s impedance spectrum, as well as micro-moisture monitoring technology to detect trace moisture and water activity in the oil. It can simultaneously monitor dissolved water, free water, and other parameters to assess the oil’s health status. Based on Jiecheng IoT’s years of experience in online oil monitoring, it analyzes the oil’s health index. It assesses the depletion of lubricant additives, monitors the degree of oil aging, and determines the level of oil contamination.

The JCQM6801 helps users improve the health management of their equipment assets. Based on real-time monitoring results, it supports maintenance decisions and prevents abnormal wear and corrosion caused by oil aging and contamination.

Applications

Lubricating oil is the “lifeblood” of major equipment. Lubricant failure directly leads to abnormal wear of mechanical structures and critical components, and is the primary cause of equipment failures and serious accidents in large-scale machinery. The JCQM6801 continuously monitors the degree of oil aging and contamination in the oil circuit 24 hours a day, providing real-time feedback on the oil’s condition. This helps users prevent or mitigate equipment failures caused by lubricant failure.

The JCQM6801 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

Water Content in Dissolved Water

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

Measurement Accuracy: ±10%

Free Water Content:

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

Temperature Stability: 0.01% water/°C

Resolution: 100 ppm

Pressure and Level

Pressure Range: 0–100 kPa … 0–2 MPa

Overload Pressure: 1.5 times full-scale pressure

Accuracy: ±0.5% F.S. BFSL @ 25°C

Total Error: ±1.0% F.S. (including calibration error and temperature drift)

Level Range: 0–1000 mm (customizable)

Accuracy: ±0.5% F.S. BFSL @ 25°C

Ferritic Abrasive Particle Concentration

Measurement Range: 0–100%

Resolution: 0.01%

Temperature

Measuring range: –40 to 120°C

Accuracy (at +25°C): ±0.2°C

Operating temperature: –40 to +85°C

Storage temperature: –40 to +85°C

Permissible oil temperature: –40 to +120°C

Health Index: 0–100 (Customers can customize the oil’s health rating and set alert thresholds based on their specific needs)

Output

Digital Signal: RS485 MODBUS-RTU (RS232 optional)

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

Other

Mechanical Interface: M42*1.5

Pressure Range: Up to 30 MPa

Material: Hard anodized aluminum (top cable exit), stainless steel (side cable exit) (materials are optional)

Protection Rating: IP67

Power Supply: DC 9V–36V

Supply Current: < 5 mA + load current

Transmitter Weight: < 300 g

Total Package Weight: <570 g

Cable Specifications: M8, 4-core

Cable Length: 2 meters

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

Figure 1. JCQM-6801 Dimensions

Pin Assignments: Brown: VCC, Black: GND, White: 485+, Blue: 485-