KAM LRW Biofuels


LRW™ spool model with included static mixer and manual draw off port

The KAM LRW Low Range Watercut for Measuring Water in Beef Tallow

Excess water in biofuel feedstock has been proven to reduce yield from the transesterification process and is of particular concern in regards to beef tallow. Recommended maximum levels are as low as 0.06%. Therefore, an accurate method of in-line measurement for tallow feedstocks is needed for the biodiesel refining process. The KAM® LRW™ Low Range Watercut meter successfully measures water in beef tallow up to 5% with a high degree of accuracy. The unit offers multiple installation options depending on line size, but all models include all requisite electronics on the probe itself. The LRW™ also offers AnyDensity™ density compensation to maintain the highest accuracy possible in applications where a live density input is available. It also compensates for the affect of temperature.

The patented and proven microwave technology used in the LRW™ provides industry-leading accuracy. And, high-quality components made and assembled entirely in the USA provide reliable and consistent performance for long-term use. Plus, the unit can easily be calibrated in line.

LRW™ fixed insertion 1.25" NPT model

With insertable and spool/flow through models, the LRW™ also offers installation flexibility that no other unit can match.  Fixed insertion models for line sizes 3" and higher install perpendicular to the line through a 1.25" port. No spool or additional vertical run required. Spools can be custom fabricated for lines from 1-2” or for units replacing other models. Spools can also incorporate static mixing elements to ensure a homogeneous flow and manual draw-off valves key for calibration and verification. For large diameter lines over 8", insertable/retractable units are available that can be installed without having to drain the line.

requires density input

Download LRW Connect Software:

Version 1221 - Models SN# 0151 and up



  • The patented and proven microwave resonance technology used in the KAM LRW™ Low Range Watercut meter allows for industry leading accuracy in a package specifically designed for custody transfer and other low range applications.
  • AnyDensity™ technology allows the instrument to compensate for any change in density across the entire API gravity range (Density input required).


  • Patented microwave resonance technology
  • AnyDensity™ density compensation
  • Automatic temperature correction
  • 100 ppm minimum detection
  • Spool and insertable models available for maximum installation flexibility
  • Designed for the particular concerns of petroleum industry applications
  • All parts and assembly made in the USA


  • Flow through spool model: 1” or 2” flanged flow through spool
  • Fixed insertion model: 3″ and up pipelines
  • Insertable/retractable model: 3″ and up pipelines


Media: Beef tallow
Material: Wetted parts–316 stainless steel**, hastelloy, and PEEK (Other materials available)
Enclosure–Copper-free aluminum
Fluid temperature: 32ºF to 176ºF (0ºC to +80ºC)
Ambient temperature: -4°F to 131°F (-20°C to 55°C)
Power requirements: 24 VDC
Power consumption: 12 watts
Available ranges: 0-5%
Accuracy: 0.0 to 0.3% water: +/- 0.060
0.3 to 0.5% water: +/- 0.150
0.5 to 1.0% water: +/- 0.250
1.0 to 3.0% water: +/- 0.360
3.0 to 5.0% water: +/- 0.450
Repeatability: ± 0.01%
Resolution: ± 0.01%
Min. detection: 100 ppm
Outputs: 4–20 mA
Alarm or relay
Temp. correction: Automatic
Pressure ratings: ANSI 150, 300, 600, 900
Density correction: AnyDensity™ compensates for changes in density across entire API gravity range*
Temperature correction: Automatic
Flow conditions:  Well mixed in accordance with KAM recommendations
Hazardous approvals: PTB 08 ATEX 1026
II 2 G Ex db IIB T6 Gb
IECEx PTB 19.0048
Ex db IIB T6 Gb

*requires density input

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



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