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Real time oil condition analysis sensor with integrated intelligent equipment maintenance optimisation analytics for all industrial and commercial applications.
OQSx-G2 delivers the ultimate high-quality real-time oil condition analysis. This enables multiple tangible operating benefits that include reduced maintenance costs, improved reliability, reduced oil wastage, and extended equipment life.
Our unique FSH™ core technology analyses oil condition holistically, detecting, measuring and tracking all and any contamination or wear with 0.01% sensitivity (100ppm) – other sensor systems typically look at specific parameters and ignore others. This unmatched real-time complete oil analysis capability is achieved through continuous analysis of the electro-chemical properties of the oil at a molecular level.
OQSx-G2 analysis data provides unrivalled high-confidence insight into real-time equipment health and maintenance status. Reliable forecasting and planning of maintenance based upon actual equipment need and thus extended optimised maintenance intervals and reduced cost becomes possible; with the assurance and safety of continuous over-watch that detects any unexpected anomalies and or contamination.
OQSx-G2 works with any oil type and is easily fitted to any equipment operating in any environment or application.

Oil Interpreting Guide

Tan Delta technology continuously analyses oil in real time at a molecular level, accurately tracking condition changes as equipment operation causes oil to wear. Rate of change projection enables reliable optimal maintenance forecasting and safe interval increases – thus reduced costs. Contamination or equipment issues cause trend spikes which are instantly detected, enabling immediate evaluation and action as necessary to avoid unnecessary break downs and life-shortening equipment wear.

Product Specifications

Name Product Number
Gen 2 – Oil Quality Sensor OQSxG2-1-XX-XX-5


  Material Dimensions Weight Connection Torque
  Stainless Steel AISI304 102mm x 36mm (L x W) 180g 32mm AF Hex Collar   25N m

Available Threads



1/2” BSPP

Dowty Type

1/2” NPT


7/8” UNF

‘O’ Ring


Dowty Type


6-Pin Bulgin PXP4013/06P/PC


Supply Consumption
+9-30 V DC 0.4w Average

Data Ouput / Input

Digital Output Protocols Supported Analog Output
RS485, CANBus Modbus, CANOpen and J1939 4-20mA

Oil Quality Detection Parameters

Frequency Output Accuracy Elements
Every 2 seconds Tan Delta Number (TDN) Oil Temperature (°C or °F) 0.01%, All wear and contamination


Operating Temperature Calibrated Temperature Fluid Temperature Fluid Pressure Storage Temperature
-40°C (-40°F) to +120°C (+248°F) -20°C (-4°F) to +120°C (+248°F) -40°C (-40°F) to +120°C (+248°F) up to 70 bar (1015 psi) -55°C (-67°F) to +150°C (+302°F)

Standards & Certification

Water & Dust Shock & Vibration EMC Conformity
IP68 when connected BS EN 60068-2-30 (Test Db – Cyc.Hum.) EN 61000-6-4:2007 (Generic Emissions Standard for Industrial Environments) CE Marked
BS EN 60068-2-6 (Test Fc – Sine Vib.) EN 61000-6-2:2005 (Generic Immunity Standard for Industrial Environments) RoHS Compliant
BS EN 60068-2-27 (Test Ea – Mech. Shock)
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