OQSX-G2 Haz - Zone 2 Certified

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OQSX-G2 Haz - Zone 2 Certified

Zone 2 certified to ATEX, IECEx, UKEX, and Class 1 Division 2 US/C standards allowing real time oil condition analysis for hazardous area industrial and commercial applications.
OQSx-G2 HAZ is a high-performance real-time oil condition analysis sensor for use in most explosion hazardous areas.
It 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 (10ppm) – 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 HAZ works with any oil type with any equipment operating in any application. It is certified ATEX Zone 2/intrinsically safe/ Class 1 Div 2

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


Product Number

Ex Gen II Oil Quality Sensor








Stainless Steel AISI304

118mm x 46mm (L x W)


32mm AF Hex Collar

25N m

Available Threads



1/2” BSPP

Dowty Type

1/2” NPT


7/8” UNF

‘O’ Ring


Dowty Type




+10-28.8 V DC

0.4w Average

Data Ouput / Input

Digital Output

Protocols Supported

RS485, CANBus

Modbus, CANOpen and J1939

Oil Quality Detection Parameters

Output Sensitivity Elements
Tan Delta Number (TDN) Oil Temperature (°C or °F) 0.1%, + All wear and contamination

Oil Type


Any mineral, semi-synthetic or synthetic

oil, including fuels (diesel & bio-diesel)


Calibrated Temperature

Operating Temperature

Fluid Temperature

Fluid Pressure

Storage Temperature

-20°C (-4°F) to +120°C (+248°F)

-40°C (-40°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 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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