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Automated High Precision Colorimeter

Automated High Precision Colorimeter
Automated High Precision Colorimeter

Automatic High Precision Colorimeter
The Koehler K13153 is a spectrophotometric colorimeter that is designed to meet the color analysis requirements of petroleum fuels, oils, waxes, and petrochemicals. It provides objective, unbiased color data according to a full range of established industry scales, although the user can easily customize the K13153 to display only those scales of interest. Measurements can also be displayed in terms of spectral data and CIE values.

The accuracy, repeatability and reproducibility of data provided by the K13153 allow for tighter color specifications and greater color consistency, giving companies the confidence needed to make important decisions regarding high value consignments and refining operations. When measuring Saybolt or Pt-Co Color of clear, water-white products, the long sample path length enables the K13153 to obtain precise color measurements, without multiplying errors.

The Koehler K13153 is an easy to use, automatic instrument. There is no need to build up calibration curves as they are already established in the instrument. The menu system guides operators through the selection of operating parameters. Thereafter, measurements are initiated by just a single key press and take less than 25 seconds to complete. The K13153 is supplied with a Windows software program, allowing data sets to be automatically downloaded to a PC computer where they can be processed or stored. It also permits remote control of the instrument.

The K13153 is a rugged colorimeter with a fabricated steel housing which is designed to function equally as a QC instrument within the laboratory or on 24 hour operation in a production environment. A diagnostic test routine and status report allows users to conduct periodic checks on the instrument or identify faults. For regular conformance testing the K13153 is also supplied with a certified glass filter of specified Saybolt value.


Conforms to the specifications of :ASTM D156, D1209, D1500, D6045, E308; ISO 2049; NF M 07-003, NF M 60-104; JIS K 2580
Measuring Principal: 16 Interference filters
Spectral Response: 420 - 710 nm
Bandwidth: 20 nm
Repeatability - chromaticity (x y): ± 0.0002 - transmittance: ± 0.25% - Saybolt values: ± 1
Measurement Time: less than 25 seconds
Calibration: Single key press; fully automated
Light Source: 5 Volt, 10 Watt tungsten halogen lamp (lens ended)
Illuminant: CIE Illuminant A, C, D65
Observer: 2°, 10°
Path Length: 0.004"-6" (0.1-153mm)
Interface: Parallel printer port, RS 232 port
Input voltage: Universal, via external power supply
Approvals: CE
Display: 2 x 40-charcter, back lit LCD
Keypad: 21-key membrane keypad; washable polyester with audible feedback
Instructions: 7 languages: English, French, German, Spanish, Italian, Portuguese, Dutch
Heater Unit: Factory fitted option, 95°C max
Instrument Housing: Fabricated sheet steel with tough, textured paint finish

Color Ranges

Saybolt Color (ASTM D156, ISO 2049, NF M 07-003)
ASTM (Mineral Oil) Color (ASTM D1500, NFM 60-104)
Hazen / Pt-Co / APHA
Lovibond RYBN
Gardner Color
CIE L*a*b* color space
L*C*h color space
Hunter L a b color space
X Y Z Tristimulus values
xyY chromaticity coordinates
?E colour difference

Included Accessories

Optical Glass Cell for all Path Lengths Specified
Calibrated glass conformance filter
Data Acquisition Software
Service Pack
Spare lamp
Operation Manual


wxdxh,in.(cm) : 20 1/4 x 7 3/4 x 6 3/4 (51.5x19.5x17.0)
Net Weight: 17.1 lbs (7.75kg)