Viscosity & Density Sensor

1、Viscosity & Density Sensor Product Introduction

Viscosity & Density Sensor is used for real-time, online monitoring of lubricating oil health. Continuous monitoring of oil condition improves condition-based maintenance efficiency, optimizes oil change intervals, and reduces reliance on offline analysis.

Viscosity & Density Sensor integrates electrochemical impedance spectroscopy (EIS) to detect oil impedance spectra, ultrasonic viscosity monitoring to detect oil viscosity and density, and micro-water monitoring to detect trace amounts of water and water activity. It can also monitor dissolved water and free water, thus obtaining the oil's health status. Based on our years of experience in online oil monitoring, it analyzes the oil health index. It assesses the wear and tear of lubricating oil additives, monitors oil aging, and determines oil contamination levels.

Viscosity & Density Sensor helps users improve equipment asset health management, assisting in maintenance decisions based on real-time monitoring results and preventing abnormal wear and corrosion caused by oil aging and contamination.

2、Viscosity & Density Sensor Features

Wide range of applications, suitable for all lubricating oils

Simultaneous measurement of multiple parameters promptly detects lubricating oil contamination and aging, helping users optimize oil change intervals.

Big data oil analysis algorithms help customers solve diagnostic challenges; includes built-in health index analysis.

24/7 uninterrupted monitoring provides timely feedback on oil status.

Strong compatibility, compatible with CAN-J1939 and RS485-Modbus RTU.

Suitable for monitoring under high-speed flow conditions; viscosity interference resistance is stronger than similar sensors; robust and durable.

3、Viscosity & Density Sensor Application areas

Lubricating oil is the "blood" of critical equipment. Lubricating oil failure directly leads to abnormal wear of mechanical structures and critical functional components, a major cause of large equipment failures and serious accidents.

Viscosity & Density Sensor can continuously monitor the aging and contamination levels of the oil in the hydraulic system 24 hours a day, providing real-time feedback on the oil's operating status. This helps users avoid or mitigate equipment failures caused by lubricating oil failure.

Viscosity & Density Sensor can be widely used in industries such as power, mining, cement, shipbuilding, military, industrial manufacturing, papermaking, petrochemicals, transportation, metallurgy, aviation, oil fields, and ports, for applications such as wind turbine gearboxes, aircraft/helicopter gearboxes, hydraulic transmission systems, machining centers, steam turbines, gearboxes, and gasoline/diesel engines.

4、Viscosity & Density Sensor Technical parameters

Dielectric Constant

Dielectric Constant: 1~10;

Dielectric Constant Accuracy: ±0.01 (Absolute Accuracy);

Water Activity

Measurement Range: 0…1aw

Measurement Accuracy: 0…0.6; ±0.02aw

0.6…0.9; ±0.03aw

0.9…1; ±0.04aw

Response Time (Typical): <1 minute

Dissolved Water Content

Measurement Range: 0…10000ppm, 0~1% (Applicable to mineral transformer oil)

Measurement Accuracy: ±10%

Free Water Content:

Measurement Range (Absolute Accuracy): 0~5% (±0.1%), 5%~phase reversal point (±2%), 0~100%

Temperature Stability: 0.01%water/℃

Resolution: 100ppm Viscosity Parameters:

Dynamic Viscosity: 1~10000 CP; Accuracy: 2%

Kinematic Viscosity: 1~12000 CST; Accuracy: 2%

Density Parameters:

Measurement Range: 600 kg/m³~1300 kg/m³

Accuracy: 2%

Temperature

Measurement 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 4~20mA, 0~20mA, resistive load <500Ω

Other
Mechanical interface: M36*1.5

Pressure range up to 30bar

Probe material 316 stainless steel

Protection rating IP67

Power supply DC 9V-36V

Supply current <5mA + load current

Transmitter weight <300g

Total package weight <370g

Cable specification M12 5-core

Cable length 2 meters

Complies with standards CE certification EN 61326-1 EN 61326-2-3 ICES-003 Class B