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Opac Opacity Reflectometer 310

 
SHEEN OPAC OPACITY REFLECTOMETER (310)
SH0657

Ideally suited for
quality control
measurement

An easy to use hand-held instrument for the measurement of, opacity or
luminuous reflectance, of a grey scale.

Suitable for the evaluation of a coatings hiding power, or simple shade
sorting tasks of metallised films, anodized aluminium or ceramics.

Using the same optical geometry as most colorimeters and an illuminant in
close conformance to CIE 'C', it correlates well with observed results given
by the human eye.

Features
• Automatic calibration on 2 included calibration standards
• Large backlit LCD display of individual readings
• Rechargeable batteries, with dual voltage mains battery recharger supplied. 

Principle of operation
The instrument measures the diffusely reflected light from the test surface. The controlled  conditions of illumination and
angle of illumination allow surfaces to be characterised according to their lightness or darkness. A completely black surface
will read a (zero),  whilst a perfect white will be 100 units, recognised in colour measurement scale as the 'Y' value.

OPAC Opacity Reflectometer (310) can be used for comparison of contrast ratios (hiding power) of paints. The procedure involves applying the test sample onto black and white card or onto polyester sheets which are then placed over black and white glass plates.

Readings are taken on the coating over the black portion followed by a reading taken over the white portion.

The readings are expressed as a contrast ratio from the formula: 
Black reading
White reading		 X 100                                            


International standards
Conforms to BS3900 D4 - ISO 2814 - ISO 6504/1 - ASTM E97

Technical specification
 Function    Description                  
 Geometry  45/0°
 Illumination  CIE Illuminant C
 Display  Backlit LCD
 Scale  0 - 100 units
 Accuracy  ± 1 unit or 1% (full scale)
 Calibration  Push button, 2 standards
 Measurement  Individual reading display
 Measuring area  9 x 13 mm
 Power  Rechargeable batteries

Ordering information
Product Ref Description
SH0657 Sheen-Opac Opacity Reflectometer (310)
Owing to continuous development, we reserve the right to introduce improvements and modify
specifications without prior notice.

Standard supply
Sheen-Opac product, calibration standards, dual voltage mains recharger and carrying case.

Associated products
Please see our website for Hiding power charts, Polyester sheets, and Film applicators.

 


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