68-21 Digital Hazemeter
INTRODUCTION
The Digital Hazemeter measures the haze (light scattering) and the light transmitting properties of plastic sheets, film, glass, and liquid products. Measuring haze involves separating scattered light from directly transmitted light. The percentage of transmitted light which deviates more than 2.5 degrees from the incident beam by forward scattering is considered to be haze.
Its unique optical design allows the evaluation of large or small specimens in a wide variety of industries. The Hazemeter features 0° degree illumination, diffuse viewing geometry for accurate measurement of haze, total luminous transmittance, and diffuse transmittance. The optical system eliminates the need for sphere-pivoting. Measurements can be made quickly as samples can be hand-held or placed at the measurement port. Thickness of the sample is also not a problem since source and receptor modules are spaced 90 mm apart.
The sample is placed in holder at entrance to sphere. Readings are taken with the sphere in each of its two positions - one where the light trap is in the beam and the other where the beam falls entirely on the inner surface of the sphere. Calibration is automatically achieved when the microprocessor switch is activated. Similarly, the haze reading is displayed when the 'press to read' button is depressed.
APPLICATIONS
Adhesives, Automotive, Ceramics, Chemical, Coatings, Cosmetics, Detergents, Dyestuffs, Food,
Glazing products, Printing Inks, Packaging materials, Petroleum, Pharmaceuticals, Plastics, Polishes,
Resins, Varnish, Waxes
STANDARDS
- ASTM D1003 - Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics
- BS 2782 - Methods of testing plastics. Optical and colour properties, weathering. Methods of exposure to laboratory light sources
- ISO - Standards for pivotable sphere hazemeters
FEATURES
- Integrated Digital readout
- Easy to use: direct reading obtained quickly
- Versatile: measure in the laboratory or in the plant
- Immune to ambient light: sample compartment is light tight
- Optical geometry: 0° degrees illumination with diffuse viewing
- Resolution of 0.1% obtainable
- Minimum sample size: 25.4 mm diameter
SPECIFICATIONS
- Sample Size - Wide variety of sample size due to unique design; Illumination beam 90 mm above base plate
- Sample Port - Transmission: 22 mm diameter
- Illuminated Area - Transmission: 15 mm diameter
- Geometry - 0° degree/diffuse (0° degree illuminating, diffuse viewing)
- Traceability - National Standards NPL
- Spectral Response - In conformance with CIE luminosity function illuminant A & C
- Repeatability - 0.1 unit
- Reproducibility - 0.3 unit
- Warm-up Time - ! minute
- Zero Drift - None
- Full Scale Drift - Less than 0.1 unit in 5 minutes after warm-up
- Operating Temperature - 5° to 50° C degrees
- Storage Temperature - -10° to 65° C degrees
INSTRUMENT SIZE
| Depth: | 200 mm ( 9.4 in.) | ||
| Height: | 240 mm ( 8 in.) | ||
| Width: | 530 mm (21 in.) | ||
| Weight | 12 kg (27 lb.) |
CONNECTIONS
Electrical: 110-230 VAC 50-60 HZ
ORDERING INFORMATION
Catalog Number 68-21
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