Advanced Sensors WIO-300K Water Cut Analyzer

Advanced Sensors WIO-300K Water Cut Analyzer

The EX rated WiO-300K 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.*

Advanced Sensors WIO-300K Water Cut Analyzer
WIO-300K Water Cut Analyzer

The WiO-300K sensor is a spool section for in-line measurements from 3 to 48 inches. The WiO-300K uses a fully flanged design. This model is made for working pressure up to Class 1500#.

WIO-300K Water Cut Analyzer Features

  • High level of accuracy +/-% up to 5% water cut.
  • Large measurement range ppm to 100% water in oil.*
  • Optional static mixer.
  • Spool section.
  • Temperature compensation.
  • 4-20mA and Hart communications.
  • Isokinetic sampling.
  • (* Range will depend on operating conditions; in general, -% for most applications and up to % 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 use and install.
  • Works in Bypass and in-line.
  • ATEX or FM/UL Explosion Proof.


Applications include Tank Dewatering, Oil Skimming, Interface Detector, Antifoam, and Demulsifier chemical feed systems, Waste-water treatment, Desalter control, Automatic tank dewatering, Oil produced from the separator, Oil that is flowing from the well, Crude oil transferred in pipelines and loading tankers.

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WIO-300K Water Cut Analyzer Specifications

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: From 430mm
  • 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