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Oil Quality Sensor 2

The Oil Quality Sensor 2 (OQS 2) puts you in control with real-time monitoring of oil degradation, oil condition and water ingress. Expensive oil changes are now based on oil condition, not on a historical time schedule.


  • Ordering Code: OQS2-01-A-V
  • Material: Stainless Steel: AISI304
  • Weight: 0.4 lb (180 g)
  • Connection: 32mm AF Hex Collar
  • Torque: 25Nm
  • Connection Thread: 1/2’’ BSPP male
  • Connector: 6 pin Bulgin 4000 series
  • Power Supply: 9-30 V DC
  • Consumption: 0.4W Average
  • Digital Output: RS485, CANbus
  • Protocols Supported: Modbus, CanOpen and J1939
  • Analog Output: 4-20mA
  • Frequency: Every 2 seconds
  • Output: Oil Condition, Oil Temperature (°F or °C)
  • Sensitivity / Accuracy: 0.01%, +/-0.5%
  • Elements: All wear and contamination
  • Configuration: Any mineral, semi-synthetic or synthetic oil, including fuels (diesel & bio-diesel)
  • Fluid Pressure: up to 70 bar (1015 psi)
  • Operating Temperature: -40°F to 248°F (-40°C to +120°C)
  • Calibrated Temperature: -4°F to 248°F (-20°C to +120°C)
  • Fluid Temperature: -40°F to 248°F (-40°C to +120°C)
  • Storage Temperature: -67°F to 302°F (-55°C to +150°C)
  • Water & Dust: IP68 when connected
  • Shock & Vibration: BS EN 60068-2-30 (Test Db – Cyc.Hum.)
    BS EN 60068-2-6 (Test Fc – Sine Vib.)
    BS EN 60068-2-27 (Test Ea – Mech.Shock)
  • EMC: EN 61000-6-4:2007 (Generic Emissions Standard for Industrial Environments)
    EN 61000-6-2:2005 (Generic Immunity Standard for Industrial Environments)
  • Conformity: CE Marked, RoHS Compliant


The sensor is a live, highly flexible and cost effective condition based monitoring solution, designed to be permanently mounted within any lubrication system on any type of machine. Over 60 times more sensitive to oil contamination than any other dielectric constant measuring sensor, it provides real-time monitoring of oil condition, water ingress and oxidation levels.

  • Reduced maintenance costs
  • Extended oil change intervals
  • Scheduled downtime intervals for increased productivity
  • Reduced waste oil cost
  • Improved equipment reliability
  • Low cost investment tool
  • Reduced carbon foot print
  • Reduces total cost of ownership

Oil Quality Display (OQD)

The Oil Quality Display is a simple but powerful device which allows you to read the quality and temperature of the oil from a Oil Quality Sensor without a PC. This enables you to set up the display box on site and then be able to see the oil quality and temperature readings as required. Use an Android app to connect your Smartphone with the OQD smart via Bluetooth. Due to a polycarbonate housing and a IP67 rating (when connected), this product can be placed in all industrial environments without any doubts of damaging it or installing the OQD in a dry place.  The new ‘Rate of Change’ feature allows you to easily monitor the degradation of oil over a programmable period of time.

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