JCQM-5200 Multi-Parameter Conductivity Sensor

Simultaneously monitors conductivity, dielectric constant, trace moisture, water activity, and temperature

Truly achieves pS-level conductivity detection

Detects quality degradation in lubricants, such as acidification and oxidation

Sensitivity 80 times higher than comparable products

Features a display screen for convenient on-site inspections

Product Features

Wide range of applications, suitable for all types of fire-resistant oils, lubricating oils, hydraulic oils, and more

Simultaneous measurement of multiple frequencies and parameters to promptly detect contamination and aging in fire-resistant oils, helping users optimize oil change intervals

Big data oil analysis algorithms to help customers solve diagnostic challenges

24/7 uninterrupted monitoring for timely feedback on oil condition

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

No moving parts, robust and durable

Compact and lightweight, easy to install

Product Overview

The JCQM-5200 Oil Conductivity Sensor is designed for real-time, online monitoring of the conductivity of fire-resistant oils, lubricating oils, and other fluids. Conductivity serves as an indicator of the oil’s health. Continuous monitoring of oil condition enhances condition-based maintenance efficiency, optimizes oil change intervals, and reduces reliance on offline analysis.

The JCQM-5200 Conductivity Sensor utilizes Electrochemical Impedance Spectroscopy (EIS) technology to measure the impedance spectrum of the oil, thereby determining its health status. The impedance spectrum can detect multiple parameters, enabling the assessment of lubricant additive depletion, monitoring of oil aging, and identification of oil contamination.

The JCQM-5200 helps users improve the health management of equipment assets. Based on real-time monitoring results, it supports maintenance decisions and prevents abnormal wear and corrosion of equipment caused by oil aging and contamination.

Application Areas

Fire-resistant oils, lubricants, and other oils serve as the “lifeblood” of major equipment. Lubricant failure directly leads to abnormal wear of mechanical structures and critical functional components, and is the primary cause of large-scale equipment failures and serious accidents. The JCQM-5200 provides 24/7 uninterrupted monitoring of the aging and contamination levels of oil in the oil circuit, providing real-time feedback on the oil’s condition. It helps users prevent or mitigate equipment failures caused by lubricant failure.

The JCQM-5200 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, electric vehicle motor cooling systems, and gasoline/diesel engines.

Technical Specifications

Online Monitoring System

Media: Fire-resistant oil, hydraulic oil, lubricating oil, kerosene, fuel oil, etc.

Testing Conditions: Static, Dynamic

Test Parameters: Conductivity, Dielectric Constant, Temperature

Conductivity Range: 100–200,000 pS/m

Sensitivity: 1 pS/m

Accuracy: ±5 pS/m

Resistivity Range: 10⁹–10¹³ Ω·cm

Specific Range: 6×10⁹–6×10¹³ Ω·cm

Dielectric Constant

Dielectric Constant: 1–6;

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

Mechanical Interface: G1, customizable bypass mode

Protection Rating: IP68

Flow rate: Independent of flow rate

Viscosity: Independent of viscosity

Ambient temperature: -40°C to 85°C

Oil temperature: -40°C to 105°C

Operating pressure: 10 MPa

Communication protocol: CAN-J1939/RS485-Modbus RTU

Weight: 100 g

Power supply: 10–30 VDC, 0.4 W

Wiring Definitions:

Dimensions: