Rhopoint IQ • 20/60/85° Glossmeter • DOI meter • Haze meter • Goniophot

PREMIUM FINISH The Rhopoint IQ The Rhopoint IQ Gloss, Haze & DOI Meter quantifies surface quality problems that are invisible to a standard glossmeter and profiles how light is reflected from a surface. • 20/60/85° Gloss • RSPEC • Reflectance haze • Reflected image quality (RIQ) • Distinctness of Image (DOI) • Goniophotometric curves Glossmeters are usually used to measure the “shininess” of a surface but are not sensitive to common effects which reduce appearance quality. IQ GLOSS measurements are fully compatible with existing Novo-Gloss and Micro-TRI-gloss results. Dualgloss 20/60° or Trigloss...

What does the Rhopoint IQ measure? Gloss is measured by shining a known amount of light at a surface and quantifying the reflectance A measurement proportional to the amount of light reflected from a surface. The peak gloss measured over a very narrow angle. Geometry: The correct measurement geometry should be used according to the sample finish – matt: 85°, mid gloss: 60°, high gloss: 20° 3. Distinctness of Image (DOI) A measure of how clearly a reflected image will appear in a reflective surface. Orange peel dramatically reduces appearance quality without affecting gloss readings. These two...

4. Reflected Image Quality (RIQ) RIQ is used to quantify effects such as orange peel and surface waviness. This new parameter gives higher resolution results compared to Distinctness of Image (DOI) measurement and better mimics human perception of surface texture, especially on high quality finishes such as automotive. Symptoms of poor RIQ: Orange peel, brush marks, waviness or other structures visible on the surface. Reflected images are distorted. Causes: Application problems, incorrect coating flow, coating viscosity too high/low, sag or flow of coating before curing, incorrect particle size/distribution,...

Gloss is an aspect of the visual perception of objects that is as important as colour when considering the psychological impact of products on a consumer. It has been defined as ‘The attribute of surfaces that causes them to have a shiny or lustrous, metallic appearance.’ The gloss of a surface can be greatly influenced by a number of factors, for example the smoothness achieved during polishing, the amount and type of coating applied or the quality of the substrate. Gloss can also be a measure of the quality of the surface, for instance a drop in the gloss of a coated surface may indicate problems...

How is gloss measured? Gloss is measured by shining a known amount of light at a surface and quantifying the reflectance. Universal Measurement Angle: 60° All gloss levels can be measured using the standard measurement angle of 60°. This is used as the reference angle with the complimentary angles of 85° and 20° often used for low and high gloss levels respectively. Low Gloss: 85° For improved resolution of low gloss a grazing angle of 85° is used to measure the surface. This angle is recommended for surfaces which measure less than 10GU when measured at 60°. This angle also has a larger measurement...

Why measure haze? Haze can be described as near specular reflection. It is caused by a microscopic surface structure which slightly changes the direction of a reflected light causing a bloom adjacent to the specular (gloss) angle. The surface has less reflective contrast and a shallow milky effect. In the coatings industry, this microscopic surface texture is often due to poorly dispersed raw materials, incompatible raw materials or oxidisation and weathering. For polished metal surfaces, haze is often associated with polishing marks or chemical residue. Reflection haze Haze is light that has...

Causes of Haze Coating & Raw Materials • Dispersion • Pigment properties • Particle size • Binder compatibility • nfluence and migration I of additives • Resin types and quality HIGH HAZE Curing • Drying conditions • Cure temperature Post Coating • Polishing marks • Cleanliness • Ageing and oxidisation Haze: Often visible as milky finish on high gloss surfaces Gloss and haze measurement with array technology The Rhopoint IQ uses a 512 element linear diode array which profiles reflected light in a large arc from 14° to 27°. The instrument processes this high resolution data, selecting individual...

Incident light Gloss and Haze component Diffused light Yellow pigment in paint film The Rhopoint IQ compensates for reflection from within the coating for highly reflective pigments, metallic coatings and speciality pigments, allowing the haze of any painted surface to be measured. Diffuse corrected measurement with array technology* Reflection haze is caused by micro texture on a surface which causes a small amount of light to be reflected adjacent to the gloss angle. For white surfaces, bright colours and metallics, a certain amount of diffuse light, reflected from within the material, is also...

Features Trigloss + IQ MENU Measurement Simultaneous measurement of all parameters, date and time stamped. Graphs Graphical reporting for quick trend analysis. Statistics Displays full statistics for the readings in the current batch. Stored data View and inspect data saved on the instrument. Stored Data Goniophotometric Curves Different types of surface textures produce identifiably shaped reflectance profiles. This goniophotometric data can be downloaded to PC for further analysis and comparison via the USB cable or BT data widget. Parameters Pass / fail parameters can be defined for instant...

Data Transfer Options Software-free data transfer USB connection to PC instantly recognises the device as a drive location which facilitates the quick transfer of .csv files using Windows Explorer or similar. Batch BatTime 001 001 001 001 001 001 001 001 001 001 002 002 002 002 002 002 002 002 002 002 002 Pass GLOSS GLOSS GLOSS HAZE LOG DOI RSPEC Cdiode CALIBRATED CERTIFIED SERIAL / Fail 20 60 85 HAZE NO N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A Direct data input via BT wireless Instantly transmit measured readings directly to programs such as MS Excel...