Rhopoint IQ ( Goniophotometer ) 20°/60°

The Rhopoint IQ quantifies surface quality problems that cannot be identified by a standard glossmeter and profiles how light is reflected from a surface. This extremely advanced instrument measures: 20/60° GLOSS • HAZE• REFLECTED IMAGE QUALITY (RIQ) • DISTINCTNESS OF IMAGE (DOI) • RSPEC In operation, these terms are defined as Gloss: A measurement equivalent to the amount of light reflected from a surface measured at 20° which is high gloss and 60° which is mid gloss. Haze: Haze is an optical effect that is caused by residue on a surface or microscopic textures. RIQ : Used to quantify effects such as surface waviness and orange peel. This newer parameter gives higher resolution results in comparison to the Distinctness of Image (DOI) measurement and better mirrors the human perception of surface textures, particularly on high-quality finishes such as paint finishes on an automotive. DOI: A measure of how patently a reflected image will appear on a reflective surface. RSPEC: The peak gloss value over a very narrow-angle.

Features:

• Full color easy to read screen, adjustable brightness 6 button touch sensitive interface
• Single button push to measure all parameters
• Pocket-sized instrument with an integrated tile holder
• Fully automatic calibration with tile detection and verification for error-free calibration
• Onboard Statistics (max, min, mean, S.D.) and graphs
• Results batching with user definable names
• Rhopoint Data Widget – A windows app that allows results to be instantly transmitted to any PC package such as Excel, Word, SPC programs etc.
• Bluetooth Compatibility – transmit data to any smartphone, tablet or PC
• USB results download to PC without the need to install software

THE RHOPOINT IQ QUANTIFIES SURFACE QUALITY PROBLEMS THAT ARE INVISIBLE TO A STANDARD GLOSSMETER The Rhopoint IQ measures reflected image quality; it is the only hand held instrument that profiles how light is reflected from a surface. Glossmeters are usually used to measure the “shininess” of a surface but are not sensitive to common effects which reduce appearance quality.

THE RHOPOINT IQ QUANTIFIES SURFACE QUALITY PROBLEMS THAT ARE INVISIBLE TO A STANDARD GLOSSMETER The Rhopoint IQ measures reflected image quality; it is the only hand held instrument that profiles how light is reflected from a surface. Glossmeters are usually used to measure the “shininess” of a surface but are not sensitive to common effects which reduce appearance quality.

Orange peel substantially reduces appearance quality without influencing gloss readings. These two test panels measure identically with a standard glossmeter. The Rhopoint IQ with RIQ/DOI measurement can compute the differences.

Haze is a common issue associated with polished and coated materials. Surfaces with haze will have a “milky” finish and a “shallow” reflected image. This important characteristic is specifically measured with Rhopoint IQ.

A measurement proportionate to the amount of light reflected from a surface. Geometry: The correct measurement geometry should be determined by the sample finish – matt= 85°, mid gloss= 60° and high gloss= 20°.

The peak gloss that is measured over an exceptionally narrow-angle. Usage: This is very sensitive to a surfaces texture and can be used to identify subtle differences on smooth surfaces.

An optical effect due to a residue or microscopic texture on a surface. Visible Symptoms: A milky finish is evident on the surface with a loss of reflected contrast. Patterns and halos can be seen around reflections of high-intensity light sources. Causes: Additive migrations, Ageing, Fine scratches, Oxidisation, Poor cleanliness/surface, Polishing marks, Poor dispersion, Raw material incompatibility, Residue, Stoving/drying/curing conditions and Vehicle quality.

The instrument compensates for reflection from within the coating for metallic coatings, highly reflective pigments and speciality pigments. This allows the haze of any painted surface to be measured.

Reflected imagine quality is used to quantify effects like surface waviness and orange peel. This new parameter achieves higher resolutions results compared to Distinctness of Image (DOI) measurement and improved mimics of human perception of surface texture, specifically on high-quality finishes such as automotive. Symptoms of Poor RIQ: Orange peel, waviness, brush marks or other structures visible on the surface. Reflected images are distorted. Causes: Some causes can be application problems, coating viscosity too high/low, cure temperature, incorrect coating flow, incorrect cure times, incorrect particle size/distribution, inter coat compatibility, improper flash/recoat time, sag or flow of coating before curing and overspray.

A measure of how clearly a reflected image appears on a reflective surface.

 

 

Measurement

A quick measurement of every parameter. Full onboard statistics with reporting and graphical trend analysis.

Concurrent measurement of all parameters, results are time and date stamped.

Displays full statistics for the number of readings in the current batch.

Graphical reporting for quick trend analysis.

Pass/fail parameters can be defined for instant recoginition of non-conformances

Different types of surface textures produce noticeably shaped reflectance profile. This goniophotometric data can be downloaded onto a PC for more in-depth analysis and comparison via the USB cable or Bluetooth Data Widget.

User definite batch names and sizes for faster and more efficient reporting.

USB connection to PC immediately recognises the device as a drive location which facilitates the fastransfer of files using Windows Explorer or similar.

Instantly transmits measured readings directly to programs on your PC or tablet such as MS Excel, to simplify the reporting process. 

Achieves 20,000+ readings every charge. The instrument is rechargeable via USB/PC or mains.

20/60°* and 20/60/85°* versions availiable

20°		Improved accuracy and resolution on high gloss & metallic samples (>70GU when measured at 60°)
60°		Universal angle – all gloss levels
85°		Improved resolution for matt finishes (

Resolution 0.1GU • Repeatability ±0.2GU • Reproducibility ±0.5GU (0-100)

Resolution 0.1GU • Repeatability ±0.2%• Reproducibility ±0.5% (100-2000)

Measurement range: 20º: 0-2000GU 60º: 0-1000GU 85º: 0-199GU

Standards: ISO 2813, ISO 7668 ASTM D523, ASTM D2457 DIN 67530 JIS 8741, JIS K 5600-4-7 *Verified performance on 20° angle for 20/60/85°

Peak Specular Reflectance: 20° ±0.09905° Measurement range: 0-2000GU

Near Specular Reflectance measured at 17.2-19°, 21-22.8° Switchable between Haze Units (HU) and Log Haze Units (LogHU) Resolution 0.1HU • Repeatability ±0.5HU • Reproducibility ±1.5HU. STANDARDS, ASTM E430, ISO 13803

Resolution 0.1 • Repeatability ±0.2 • Reproducibility ±0.5 Measurement range: 0-100