Testing Machines Inc
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.