Petrochemical
 
     
 
  • General
  • ASTM D 1500 Color
  • Saybolt Color
  • Crude Oil in Water
  • Interface detection
  • Water in fuel


In-line concentration, color and turbidity analyser for color, ASTM, Saybolt, interface detection, water in fuel, petrochemical and crude oil

 

Kemtrak photometers have many uses throughout a refinery where precise in-line concentration measurements of liquids and gasses are required.

Kemtrak photometers use industrial grade fiber optics (steel jacketing) to pipe light from the analyzer to an industry standard measurement cell. Kemtrak measurement cells are ideally suited for the most hazardous explosive atmospheres as they contain no electricity, moving parts or source of heat.

Efficient process control using in-line photometry can reduce environmental emissions and running costs. From a better understanding of the process, maintenance costs and downtime can also be reduced.

Petrochemical applications include:

ASTM D 1500 Color Scale

  • 0 – 8 ASTM D 1500 Color Scale
  • Manufacturing quality and control
  • Real time continuous measurement
  • Zero maintenance
  • High temperature operation - up to 275°C / 527°F
  • For use in zone 1 hazardous areas (EExD)

The ASTM D 1500 color scale is applicable to a wide range of petroleum products, such as lubricating oils, heating oils, diesel fuel oils and petroleum waxes. The ASTM D 1500 color scale is the principal quality measurement used for the purchase and sale of partially refined oils.

As an oil is refined, there exists a correlation between the color of the distillate and the degree of refinement. During the refining process, crude oil is transformed into a range of products with distinct colors ranging from the dark red-black of crude through to the pale yellow hue of the lighter fractions. The distinct petroleum colors can be accurately measured and the refinement process controlled using the ASTM D 1500 color scale.

The ASTM D 1500 color scale is also used for product and interface detection, and for product contamination monitoring.

Hazen, platinum cobalt, Pt/Co, Apha  drinking water colour ASTM D 1500 Color Application Note

DCP007 Product Brochure

The Kemtrak DCP007 LED process photometer will accurately measure the ASTM D 1500 color scale.

The Kemtrak DCP007 uses a long life LED light source, precision optical filters and robust fiber optics that provides an ASTM D 1500 color analyzer with outstanding performance and reliability.

 

 


Thanks to a proprietary dual wavelength four channel measurement technology, highly colored to trace color detection is no problem. The primary “absorbing” wavelength approximates the perception of the human eye, while a second reference NIR wavelength not influenced by the sample color is used to compensate for turbidity and/or fouling of the optical windows.

Saybolt (ASTM D 156) Color Scale

  • +30 to -16 Saybolt color scale (ASTM D 156)
  • Color of refined petroleum products
  • Real time continuous measurement
  • Zero maintenance
  • High temperature & pressure operation
  • Suitable for use in zone 1 hazardous areas (EExD)

The ASTM D 156 Saybolt color scale is used in the petrochemical and pharmaceutical industries to grade the yellowness of pale liquid products and to monitor product contamination. The Saybolt color scale is applicable to a wide range of petroleum products, such as undyed motor and aviation gasoline, jet propulsion fuels, naphthas and kerosene, in addition to petroleum waxes and pharmaceutical white oils.

The Saybolt color scale traditionally relies upon matching a standard colored disc viewed through an adjustable volume of sample. This one dimensional color scale is prone to operator bias and error due to slight variations in the way different operators will perceive color. In essence, color is simply how our brains respond to different wavelengths of light and such a process can be standardized and automated using a Kemtrak DCP007 LED process photometer.

The Kemtrak DCP007 in-line process photometer can instantly detect minute changes in color that is beyond the sensitivity of the human eye and will furthermore eliminate operator interpretation errors.

 

In-line liquid and gas color, concentration (UV-VIS-NIR) and turbidity measurement - Kemtrak industrial process fiber optic photometer

Hazen, platinum cobalt, Pt/Co, Apha  drinking water colour Saybolt ASTM D 156 color information sheet

DCP007 Product Brochure

The Kemtrak DCP007 utilizes a long life LED light source, precision optical filters and robust industrial grade fiber optics to provide a Saybolt color analyzer with outstanding performance and reliability. A proprietary dual wavelength four channel measurement technology ensures precise trace color measurement. A primary “absorbing” wavelength approximates the perception of the human eye, while a secondary reference NIR wavelength not influenced by the sample color is used to compensate for turbidity and/or fouling of the optical windows.

Since optic fibers are used to pipe light to the
measurement point and back, the measurement
cell contains no electronics, moving parts or
sources of heat and is well suited for hazardous
and extreme environments.

Crude Oil in Water

  • 0 – 10% light crude oil in water
  • Real time continuous measurement
  • Oil in produced water
  • Condensate and cooling water
  • For use in zone 1 hazardous areas (EExD)

Crude oil is a yellow-to-black liquid consisting of hydrocarbons of various molecular weights and other liquid organic compounds. Crude oil will not mix with water, however under turbid conditions crude oil will form an oil-in-water emulsion with a turbidity proportional to the oil concentration.

Crude oil in water is accurately measured using a Kemtrak TC007 LED process turbidimeter. A unique benefit of the Kemtrak TC007 turbidimeter is that all electronics, including the long life high
performance LED light source and photo-detectors, are housed within the Kemtrak TC007 analyzer enclosure permitting safe operation in even the most hazardous of environments. Industrial grade optic fibers are used to pipe low power cold light from within the analyzer enclosure to the sampling point and back.

Hazen, platinum cobalt, Pt/Co, Apha  drinking water colour Crude Oil in Water Applicaiton Note

TC007 Product Brochure


Contact a Kemtrak sales representative for more information.

 

 


If two phases have any difference in either turbidity or absorbance between 250nm and 2000nm, then they can be separated by a Kemtrak process photometer. By monitoring either the absorbance or turbidity at strategic points in the process, immediate detection of product-product or product-water interfaces can be achieved. The benefits include:

  • reduced product loss
  • increased product quality
  • faster product changeover
  • reduced waste water contamination

The net benefit is a substantial cost reduction.

 

In-line liquid and gas concentration measurement - Kemtrak DCP007 NIR near-infrared industrial process fiber optic photometer

 


Kemtrak photometers are easy to install and require no maintenance. Use a Kemtrak DCP007 LED process photometer for monitoring changes in color or a Kemtrak DCP007-NIR LED process photometer for detecting variation in the water or organic content between the phases.

Contact a Kemtrak sales representative for more information.

In-line concentration (UV-VIS-NIR), color and turbidity analyser for interface detection, phase separation for reduced product loss, inreased product quality, fast product changeover and reduce waste water contamination


The measurement of water in hydrocarbon solvents and gasses is an important measurement in the petrochemical industry. The use of near-infrared (NIR) spectroscopy for water analysis is common as NIR offers high sensitivity and measurements can be undertaken in-line providing immediate results.

A Kemtrak DCP007-NIR LED process photometer can be used for measuring water in oil, LNG and fuels such as petroleum and aviation gasoline.

Water has two regions of activity in the NIR region between 1000 - 2000nm. At 1400nm the O-H stretch in the water molecule is measured, while at 1900nm water has a unique peak due to a combination of O-H stretch and
H-O-H bending. The water peak at 1900 is about five times as large as the water peak at 1400.

NIR near-infrared in-line industrial process analyser for water measurement in acetone, isopropyl benzene, propanol, tetrahydrofuran, petroleum, aviation gasoline, methanol and alcohol

 

In-line liquid and gas concentration measurement - Kemtrak DCP007 NIR near-infrared industrial process fiber optic photometer

The Kemtrak DCP007-NIR LED process photometer uses a long life high performance NIR LED light source and robust fiber optics to deliver a drift and noise-free measurement with very high precision. Automatic compensation for sample turbidity and/or fouling of the optical windows ensures trouble free operation.

Kemtrak offer a comprehensive range of industrial measurement cells that are well suited for harsh industrial environment and for use in explosive atmospheres.

 
     
 

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