FPS - Fluid Property Sensor

Modern mobile equipment calls for a hydraulic fluid ensuring profitable and reliable operation.

Signal Output:
Output Dynamic viscosity, density, dielectric constant via CAN J1939
    The FPS is a novel fluid property sensor that will directly and simultaneously measure the viscosity, density, dielectric constant and temperature of fluids. Relying on patented tuning fork technology, the sensor monitors the direct and dynamic relationship between multiple physical properties to determine
    the quality, condition and contaminant loading of fluids such as engine oil, fuel, transmission and brake fluid, hydraulic, gears oils, refrigerants and solvents.

    The multi-parametric analysis capability improves fluid characterization algorithms. The FPS provides in-line monitoring of fluids for a wide range of OEM and aftermarket installations including fluid reservoirs, process lines and pressurized high flow conduits (e.g., engine oil gallery) for applications that include on and off highway vehicles, HVAC&R, compressors, industrial equipment and turbines. A universal digital CAN J1939 compliant protocol provides easy to connect interface to main Host controller. A simple 4 pin connector allows for cost effective mounting options.

    Important note
    The Parker FPS does not use a “fingerprint” principle. Sensors using a “fingerprint” principle require up-front calibration in the fluid type subject to future analysis. This calibration can take up to 200 hours, during which time the aging of the oil can start and hence the calibrated reference is not accurate. When a different oil is applied, sensors using the “fingerprint” principle require new calibration. Parker's PFS sensor directly measures the important fluid properties without the need for calibration in-advance.

    • Continuously measurement of important fluid properties
    • Early detection of fluid aging
    • No up-front calibration required
    • On board processor with real-time data analysis with 5, 10 or 24 volts supply

Performance Characteristics


350 g

Minimum Fluid Temperature

-4 °F
-20 °C

Maximum Fluid Temperature

302 °F
150 °C

Port Type

M14x 1,5

Product Type

Dielectric and Parker fluid aging detection technology

Maximum Operating Pressure

25 bar

Power Supply Voltage

60Vdc max

For Fluid Type

Petroleum, synthetic oils and water/oil emulsions

Communication Interface

Via CAN J1939

Maximum Kinematic Viscosity

50 cSt

Ingress Protection Rating


FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS DESCRIBED HEREIN OR RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY DAMAGE. This document and other information from Parker-Hannifin Corporation, its subsidiaries and authorized distributors provide product or system options for further investigation by users having technical expertise. The user, through its own analysis and testing, is solely responsible for making the final selection of the system and components and assuring that all performance, endurance, maintenance, safety and warning requirements of the application are met. The user must analyze all aspects of the application, follow applicable industry standards, and follow the information concerning the product in the current product catalog and in any other materials provided from Parker or its subsidiaries or authorized distributors. To the extent that Parker or its subsidiaries or authorized distributors provide component or system options based upon data or specifications provided by the user, the user is responsible for determining that such data and specifications are suitable and sufficient for all applications and reasonably foreseeable uses of the components or systems. Click here to view all product safety information.

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2521 Commercial Drive
Auburn Hills, Michigan,
United States, 48326