Opacity Metre
Opacity Meter/ Intelligent Reflectometer
Opacity Meter is our newest portable product. It is controlled by microcomputer and has many functions such as measuring data, data storage, dealing with data and searching for data etc.
This meter is used to measure the opacity, or luminous reflectance, of a grey scale. Suitable for the evaluation of a coatings hiding power, or simple shade sorting tasks of metallized films, anodized aluminum or ceramics. It can calculate the contrast ratio（opacity） and store it. The operator can call up the data when required. It complies with ISO 2814，ISO 3906 , ISO 6504，BS 3900 and DIN 55984.
Features：
◆ Small and light, easily portable.
◆ No need to warm up and can work immediately after powering on
◆ Calibrate automatically：judge zero point and calibrate with the white board automatically
◆ With USB interface and software for transmitting data.
◆ One 1.5V alkaline Battery can be used for almost 60 hours and 100,000 reading.
◆ Long-term stable light source needs no replacing.
◆ With simple test mode and Statistics-Mode.
◆ Calculate the reflectance value automatically
Main Technical Parameters：
■ Working angle： 0°（irradiate），45°（receive）；CIE Illuminant C
■ Range of Measurement：0-100 units
■ Resolution： 0.1%
■ Accuracy： ±1 unit or 1% （full scale）
■ Power Supply：One 1.5V alkaline battery or rechargeable
■ Window Size:12×17mm(ellipse)
■ Size： 114×32×64mm
■ Weight:180g
■ Testing Environment： 10℃～40℃, relative humidity should not be over 85%.
■ Ordering Information：BGD 583---Opacity Meter
Reflectance Meter
The terms "contrast ratio", "opacity" and "hiding power" are used interchangeably throughout the coatings industry but on this page, in order to simplify matters, only the term opacity will be used. Opacity is defined as the ability of a coating to prevent the transmission of light. A practical example of this is the case where a yellow wall is painted using a red paint. The greater the opacity the red paint, the more efficient it will be at hiding the underlying yellow colour
Opacity is defined by how a wet film of the test coating is applied to a black and white patterned substrate. After the film has dried, a reflectance meter or a spectrophotometer is used to measure the amount of light reflected from the overcoated black areas of the substrate. This is then expressed as a percentage of the amount of light reflected from the overcoated white areas. This value is the opacity of the film.
A paint which is highly opaque will obscure the black and white areas to an equal extent. In this situation, equal amounts of light will be reflected from the overcoated black and white areas and consequently an opacity value of 100% will be obtained.
BGD 581 Reflectance meter is designed and manufactured according to international standard ISO2814, ISO 3906 , ISO 6504,BS 3900 and DIN 55984
Feature：
◆ Small and light, real easy to be carried and used.
◆ Auto zero calibration.
◆ One 1.5V alkaline Battery can be used for almost 60 hours and 10000 readings.
◆ Long-term stable light source needs no replacing.
Main Technical Parameters：
■ Measure range：0～100%
■ Measurement condition： 0/45°
■ Repeatability：1.5%
■ Power supply：One 1.5V alkaline Battery or rechargeable
■ Window Size：12×17mm（ellipse）
■ Dimension：114mm×32mm×64mm
■ Weight： 300g
■ Ordering Information：BGD 581---Reflectance Meter
Hiding Power Test Board
Hiding Power Test Board is a glass board which is printed 16 white squares and 16 black squares. Every square size is 25mm×25mm. It is used to check the hiding power of paints. Operator brush some paint on it surface till can’t see white square and black square completely, then weight the used paint and divide the whole area（200cm2）, use g/cm2 to express this paint hiding power capacity. It is a easy and fast method to test hiding power of paints.
Main Technical Parameters
■ Reflectance of white square：80±2
■ Reflectance of black square：≤1
■ Overall dimension：250mm×100mm
■ Ordering Information：BGD 299--- Hiding Power Test Board