Advanced Sensors WIO-300P Water Cut Analyzer

Advanced Sensors WIO-300P Water Cut Analyzer

The EX rated WiO-300P series is a Water Cut analyzer that measures the amount of water in oil to high levels of accuracy. Water Cut is also referred to as Water in Oil, BS&W, OWD, or WFM. The smart sensor technology uses a capacitive method to measure the percentage of water contained within the sample, with a large measurement range from a few 100ppms to 100% water.*

The WiO-300P sensor is an insertion model that can be provided as a fixed-length flanged unit or supplied with a kit providing retraction under pressure. Pressure class up to 1500#.


  • High level of accuracy +/-0.05% up to 5% water cut.
  • Large measurement range 200ppm to 100% water in oil.*
  • Optional static mixer.
  • Optional spool section.
  • Temperature compensation.
  • 4-20mA and Hart communications.
  • Isokinetic sampling.
  • (*Range will depend on operating conditions; in general, 0-65% for most applications and up to 100% for example sweet water).


  • Smart sensor, no need for a separate controller.
  • Option to combine the Water Cut with Advanced Sensors Oil in Water Analysers.
  • Low power consumption.
  • Easy to install.
  • ATEX or FM/UL Explosion Proof.

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Measurement Performance

  • Measurement principle: Capacitance
  • Range and accuracy*:
    +/-0.01% up to 1% water cut
    +/-0.05% up to 5% water cut
    +/-0.1% from 5% to 10% water cut
    +/-0.2% from 10% to 25% water cut
    +/-0.5% from 25% to 65% or 100% (sweet water) water cut
  • Resolution: 0.003%
  • Response time: 1 sec
  • Temperature Compensation: Yes

Operating Conditions

  • Process temperature: 0-120°C standard version, 0-240°C high-temperature version
  • Process pressure: Up to 100barg depends on flange rating
  • Operational ambient temperature: -40 to +65°C


  • Power: 24VDC

WIO-300K Water Cut Analyzer Certification

  • Ingress Protection: IP66/67 Nema 4X&7
  • Certification:
    – IECEx: Ex db IIC T4 Gb, Ta= -20 to +60°C
    – CSA/UL Class I Zone 1 AEx db IIC T6 Gb, Ex db IIC T4 Gb || Class I Division 1 Gr. ABCD T4/T5, Ta= -20 to +60°C
    – ATEX: Ex II 2 G || Ex db IIC T4 Gb || Ta= -20 to +60°C
  • Pressure Certifications: PED (EU Zone) limited to size/pressure that falls within SEP

Weight & Dimensions (for shipping)

  • Length: Depends on the configuration
  • Length with static mixer: Application dependent
  • Insertion Port (WIO-300P): 2 or 3 inch
  • Weight and full dimensions: Depends on the configuration. Please contact Advanced Sensors about your application


  • 4-20mA: Yes
  • Hart: Yes

WIO-300K Water Cut Analyzer Additional Information

  • Hot insertion/extraction: ANSI 150, ANSI 300, ANSI 600
  • Wetted parts: SS316L, Duplex, Super Duplex, Hastelloy
  • Enclosure material: SS316L or Aluminium

*Range will depend on operating conditions; in general, 0-65% for most applications and up to 100% for example sweet water. Please contact Advanced Sensors to discuss your application needs.

Download Datasheet: Advanced Sensors WIO-300K Water Cut Analyzer


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