OWD Watercut Meter


OWD™ insertable model

With 1% of full scale accuracy regardless of range, the rugged OWD™ WaterCut Meter is the ideal instrument for monitoring water-in-oil concentrations in a variety of applications from production to pipeline. The OWD™ offers continuous, real-time, watercut data.

Unlike other watercut meters, the OWD's patented multi-antenna design reads both oil continuous and water continuous modes simultaneously and automatically transitions between the two. Each of the two antennas operates with a microwave frequency ideal for water or oil continuous phase for higher accuracy and repeatability. In essence, it is two instruments operating in parallel with a single microprocessor. The result is measurement over a true 0-100% range with +/-1% accuracy regardless of water content.

The OWD™ also uses internal references to auto calibrate for drift caused by temperature changes of the electronics, and automatically compensates for changes in fluid temperature.

The simplicity of the design and the engineering of the OWD™ WaterCut Meter mean there are no moving parts. The output signal can be sent to Flow Computers, SCADA, PLC’s or to a Central Control Room for logging or display on chart recorders or monitors.

For ranges up to 10% water, the KAM LRW Low Range Watercut meter offers industry-leading accuracy and repeatability with automatic density correction throughout the entire API gravity range.

CLICK HERE for a whitepaper on Water Content Determination in Crude Oil

Download OWD Connect Software:

Version 0820 - Models SN# 912 and up



The patented multi-antenna design of the KAM OWD™ Water Cut Meter consists of one antenna designed for oil-continuous phase, one for water continuous phase, and the emulsion phase is measured based on combined data from the two.


  • Full 0-100% range
  • Automatic temperature correction
  • 1% of full scale accuracy
  • All requisite electronics housed within unit (can also be mounted remotely) and included in unit price


  • Real-time production management, optimization, and automation
  • Marine, truck, and rail loading and unloading
  • Refinery: incoming crude stream, feedstock
  • Crude batching
  • Well head: automatic well test, multiphase separators


Media: Crude oil, refined products and water
Material: Wetted parts–316 stainless steel (Optional NACE MR-01-75 Compliance Available)
Electronics enclosure–Copper-free aluminum*
Fluid temp.: 32ºF to 176ºF (0ºC to +80ºC)
Ambient temp.: -4°F to 131°F (-20°C to +55°C)
Power requirements: 24 VDC/1 amp at 24 watts (110/220 conversion available)
Available ranges: 0-20%, 0-30%, 0-40%, 0-100%
Accuracy: +/- 1% of full range
Repeatability: ± 0.01%
Resolution: ± 0.01%
Min. water detection: 100 ppm
Outputs: 4–20 mA
Alarm relay
HART (Optional)
Mounting: 1/2″, 3/4″, 1″ or 2″ flanged flow through (other sizes available)
2″ MNPT seal housing*
2″, 3″, or 4″ flanged seal housing
Flanged or 1.25″ fixed insertion
Pressure ratings: ANSI 150, 300, 600, 900, 1500
Flow conditions: Well mixed in accordance with KAM recommendations
Hazardous area: PTB 08 ATEX 1026
II 2 G Ex db IIB T6 Gb
IECEx PTB 19.0048
Ex db IIB T6 Gb
Sensor dimensions: Ø1.5″ x 4.5″ (38 mm x 114 mm)
EX Enclosure: Sensor electronics – 4.4″ x 7.1″ x 4.6″ (101.5 mm x 180.3 mm x 117 mm)
Shaft length: Off-the-shelf lengths are 20″, 24″, 30″ and 36″ for insertable models
(508 mm, 609.6 mm, 762 mm, 914.4 mm)
Off-the-shelf lengths are 7″ and 12″ for fixed insertion models
(177.8 mm and 304.8 mm)
Additional sizes available
Pipe size: 1/2″ to 48″ (15 mm to 1200 mm)
Weight: from 20 lbs. (9 kg)

* Seal Housing for 2″ MNPT Models are Carbon Steel.




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KAM OWD Application Data Sheet

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  • Pipeline and installation type (please specify units)






  • Flow Conditions

    Please note: proper mixing in accordance with API Chapter 8.2 is required for accurate OWD performance. In order for KAM to properly quote an OWD, please fill out all flow conditions fields to the best of your ability. Should pipeline mixing be required, the quote will include an appropriate solution to fulfill this requirement (SMS, SMP, or ML).

  • (If yes, a KAM IT Insertion Tool will be required for installation and included in quote)

  • Shaft Calculator

    Determine minimum shaft length for proper insertion in the pipeline using the formula below. See the image below for references.

  • This field is for validation purposes and should be left unchanged.