Product specifications

3
CONTAMINANT ANALYZERS VCA
Contaminant analyzers measure the
weight of solid particulate matter as
well as the concentration of free water
in a fluid. Contaminant analyzers use
milligrams per liter (mg/l) to measure
solid contaminants, and further use parts
per million (ppm) to quantify free water
contamination. Contaminant analyzers
make use of light refraction technologies.
Focused light refracts differently when
striking solid particles compared to
free water droplets. A contaminant
analyzer projects a laser beam across
the full internal diameter of a pipe.
Water droplets tend to scatter/refract
light at low angles and produce a very
distinctive signature. Directly opposite
the laser is a specialized water detection
sensor to capture and measure this low
angle refracted light and recognizable
signatures.
In addition, located at 90 degrees to
the laser beam is a solid contamination
detection sensor. Solid particles tend
to scatter light at right angles to a
light source. Solid contaminants also
produce a recognizable signature that
can be quantified and measured by the
specialized solid contamination sensor.
COMPARISON OF CONTAMINANT SENSING TECHNOLOGIES
Light Obscuration
Technology
Light Scattering
Technology
Common Name Particle Counters Contaminant Analyzer
Brand Names icount VCA (Velcon Contaminant Analyser)
Contaminant
detection
Solids Solids and water
Contaminant
differentiation
No Yes
Installation Online (feeds from sample port)
Of ine (bottle sampler)
Inline (part of the pipe) full  ow
Cost Low-Medium-High Medium to High
Compliant
Standards
ISO 4406 (1999), ISO 11171 (2009) ASTM D2276, ASTM D5452
Detection range >4 micron > 1 micron
PIPE CROSS SECTION OF VCA
Water
Contaminant
Sensor
Light
Source
Solids
Contaminant
Sensor