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Rhopoint IQ 20/60 Gloss Haze DOI Meter

20/60 gloss meter for matt to mirror finishes
Haze and DOI measurement to ASTM E430
To ensure accurate and reliable results, the Rhopoint IQ 20/60 Gloss Haze DOI Meter is supplied with standards calibrated and certified according to ISO 17025 UKAS
Why should I buy an IQ and not a standard gloss meter?

£3,650

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Industries & Applications

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.

The Rhopoint IQ can measure

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 20/60/85° versions are for maximum accuracy and resolution in all gloss applications.

What does the Rhopoint IQ measure?

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, overspray, improper flash/ recoat time, inter-coat compatibility, incorrect cure times and cure temperature.

Why measure gloss?

Gloss is an aspect of the visual perception of objects, which is as important as colour when considering the psychological impact of products on a consumer.

Gloss 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.

Manufacturers design their products to have maximum appeal: from highly reflective car body panels, to glossy magazine covers, or matt finish automotive interior trim.

This is especially noticeable where parts may be produced by different manufacturers or factories, but will be placed adjacent to one another, to create the finished product.

It is important therefore that gloss levels are achieved consistently on every product or across different batches of products.

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 with its cure, leading to other failures such as poor adhesion or lack of protection for the coated surface.

It is for these reasons that many manufacturing industries monitor the gloss of their products, from cars, printing and furniture to food, pharmaceuticals and consumer electronics.

How is gloss measured?

Gloss is measured by shining a known amount of light at a surface and quantifying the reflectance.

The angle of the light and the method by which the reflectance is measuredare determined by the surface material and which aspect of the surfaceappearance is to be measured.

Which angle should I use for my application?

ISO 2813 and ASTM D523 (the most commonly used standards) describe three measurement angles to measure gloss across all surfaces.

Gloss is measured in gloss units (GU) and is traceable to reference standards held at NIST (USA).

Rhopoint Novo-Gloss range of glossmeters

Single 60°, Single 45° and Trio 20/60/85° versions for maximum accuracy and resolution in all gloss applications.

Model	20° Gloss HIGH GLOSS	45° Gloss SPECIALTY ANGLE	60° Gloss ALL GLOSS FINISHES	85° Gloss LOW GLOSS FINISHES
Novo-Gloss 60	-	-		-
Novo-Gloss 45	-		-	-
Novo-Gloss Trio		-

To quantify haze, distinctness of image, reflected image quality and other surface texturing please consider the Rhopoint IQ.

What is haze and why measure it?

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.

Haze

Haze is light that has been reflected by small surface structures adjacent to the main specular component.

Reflectance haze – An optical effect caused by microscopic texture or residue on a surface.

Reflection Haze

Reflection haze is an optical phenomenon usually associated with high gloss surfaces.

It is a common surface fault that reduces appearance quality. A hazy surface has a visibly shallower reflection with a milky finish and halos appear around reflections of strong light sources.

A high gloss finish with haze exhibits a milky finish with low reflective contrast, reflected highlights and lowlights are less pronounced.

On surfaces with haze, halos are visible around the reflections of strong light sources.

Causes of Haze

Coating & Raw Materials

Dispersion
Pigment properties
Particle size
Binder compatibility
Influence and migration of additives
Resin types and quality

Curing

Drying conditions
Cure temperature

Post Coating

Polishing marks
Cleanliness
Ageing and oxidisation

Gloss and Haze Measurement with Array Technology

The 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 elements within the array that equate to the angular tolerences outlined in international measurement standards.

In a single 20° measurement, the following calculations are made:

Curved Surface Adjustment

A major advantage of the IQ is that it automatically compensates for curved or textured sample surfaces by virtually adjusting the measurement position. Conventional gloss- hazemeters have fixed optics which can make measurement unreliable as any sample curvature will reflect light away from the centre of the measurement sensor causing errors.

The IQ automatically adjusts the sensor position by detecting the peak of the reflected light. The laws of reflection state that the incident angle is equal to the reflection angle thus the peak equates exactly to the 20° gloss angle.

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 present in this region.

This diffuse light exaggerates the haze signal for these surfaces causing higher than expected readings.

* Only enabled when the instruments is set to haze measuring mode of ASTM E430

Corrected Haze Measurement on Metallic Coatings

For non metallic surfaces, the diffuse component is Lambertian: it is equal in amplitude at all angles in relation to the sample surface. Conventional gloss-hazemeters measure diffuse reflection using a luminosity sensor positioned away from the gloss angle. Luminosity is subtracted from the haze signal allowing metallic surfaces to be measured independently of their colour.

An advantage of the IQ is that unlike a conventional instrument, compensation is calculated using a region adjacent to the haze angle. This technique gives compatible readings on solid colours but also compensates for directional reflection from metallic coatings and speciality pigments.

The Rhopoint IQ quantifies surface quality problems that are invisible to a standard glossmeter.

Reflected Image Quality (RIQ)

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, overspray, improper flash/re-coat time, inter coat compatibility, incorrect cure times or cure temperature.

Reflectance Haze Compensation

The instrument 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.

Distinctness Of Image (DOI)

A measure of how clearly a reflected image will appear in a reflective surface.

Reflectance Haze

An optical effect caused by microscopic texture or residue on a surface.

Visible Symptoms: A milky finish is apparent on the surface with a loss of reflected contrast. Halos and patterns can be seen around reflections of high intensity light sources.

Causes: Poor dispersion, raw material incompatibility, additive migration, vehicle quality, stoving/drying/ curing conditions, polishing marks, fine scratches, ageing, oxidisation or poor cleanliness/surface residue.

Haze is a common problem associated with coatings and polished materials. Surfaces with haze have a milky finish with a shallow reflected image. This important characteristic is directly measured with the Rhopoint IQ.

Measurement features

Fast measurement of all parameters and instantly transmit measured readings.

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.

Statistical analysis via Novo-Gloss Multi Gauge software

The included software provides an easy means to measure, import and compare data and export the measurements into several other file formats, e.g. PDF, Excel® or CSV.

Applications

The DOI, Haze and RSPEC values measured by the Rhopoint IQ allow the user to quantify and control the surface textures that reduce the perceived quality of manufactured products.

The meter is widely used throughout many industries to assess the reflective qualities of products, in particular automotive exteriors and interiors.

Automotive

Printed Cartons

Printing Ink

Powder Coating

Automotive Re-finish

Yacht Manufacturers

Paints and Coatings

Smart Devices, PC & Laptop Covers

Furniture

Aerospace

Plastics Industry

Wood Coatings

Metal Polishers

Polished Stone

The Rhopoint Quick Report App

The Quick Report App from Rhopoint is a quick and easy to use reporting package designed to enhance the functionality & reporting capabilities

From App / Software to PDF report

Configure a template of your sample to be testedand add measurement spots.
Make measurements directly into the app.
Readings are transferred from the measurementdevice to the app via Bluetooth allowing customisedPDF reports to be easily generated.The app will work on Android, IOS and a PC using webbrowser or application installation.

app.rhopointinstruments.com

Specifications

Measurement

20° Gloss
Range	0 - 100 GU	100 - 2000 GU
Repeatability	0.2 GU	0.2%
Reproducibility	0.5 GU	0.5% *
Resolution	0.1 GU
Measurement Area	6mm x 6.4mm
Standards	ISO 2813 \| ASTM D523 \| ISO 7668 \| ASTM D2457 \| DIN 67530 \| JIS Z 8741

60° Gloss
Range	0 - 10 GU	10 - 100 GU	100 - 1000 GU
Repeatability	0.1 GU	0.2 GU	0.2%
Reproducibility	0.2 GU	0.5 GU	0.5% *
Resolution	0.1 GU
Measurement Area	6mm x 12mm
Standards	ISO 2813 \| ASTM D523 \| ISO 7668 \| ASTM D2457 \| DIN 67530 \| JIS Z 8741

85° Gloss
Range	0 - 100 GU	100 - 199 GU
Repeatability	0.2 GU	0.2%
Reproducibility	0.5 GU	0.5% *
Resolution	0.1 GU
Measurement Area	4.4mm x 44mm
Standards	ISO 2813 \| ASTM D523 \| ISO 7668 \| ASTM D2457 \| DIN 67530 \| JIS Z 8741

_{* A mirror gloss calibration standard is required to achieve this reproducibility}

Haze
Range	0 - 500 Log HU
Repeatability	1 Log HU
Reproducibility	10 Log HU
Resolution	0.1 Log HU
Measurement Area	6mm x 6.4mm
Standards	ASTM E430 \| ASTM D4039 \| ISO 13803

	RSpec	DOI	RIQ
Range	0 - 2000 GU	0 - 100 GU	0 - 100 GU
Repeatability	0.2%	0.2 Log HU	0.2 Log HU
Reproducibility	0.5%	0.5 Log HU	0.5 Log HU
Resolution	0.1
Measurement Area	6mm x 6.4mm
Standards	Rhopoint	ASTM E430	Rhopoint

Instrument

Instrument Information
Battery Type	Rechargeable lithium ion
Operation Time	17+ hours
Readings per Charge	20,000+
Memory	8MB, 2,000 readings
Operating Temperature	15°C - 40°C (60°F - 104°F)
Operating Humidty	Up to 85% (non condensing)
Commodity Code	9027 5000

Dimension & Weights
Dimensions	140mm (H) x 50mm (W) x 65mm (D)
Instrument Weight	390g
Packed Weight	1.75kg
Packed Dimensions	360mm (H) x 290mm (W) x 140mm (D)

Included Accessories
Certificates:	Instrument calibration certificate ISO 17025 UKAS tile calibration certificate
Cables:	USB data & mains cable Wrist strap
USB Containing:	Instruction manual
Calibration Tile	High gloss calibration tile with cleaning cloth
Wrist Strap and Quick Start Guide

Order Codes
Rhopoint IQ 20/60	A6000-013.2
Rhopoint IQ 20/60/85	A6000-011.2
Protective Travel Case:	M1000-016

Additional Calibration Standards
Mid gloss 20°	B6000-055/ISO
Mid gloss 60°	B6000-051/ISO
Mid gloss 85°	B6000-056/ISO
High gloss (all angles)	B6000-050/ISO

Free extended warranty

Free extended 2 year warranty: Requires registration at www.rhopointinstruments.com/help-services/forms-feedback/instrument-registration/ within 28 days of purchase. Without registration, 1 year standard warranty applies.

Free light source warranty

Guaranteed for the life of the instrument.

Calibration and service

Fast and economic service via our global network of accredited calibration and service centres. Please visit www.rhopointinstruments.com/help-services/calibration-servicing/ for detailed information.

To ensure accurate and reliable results, Rhopoint Novo-Gloss Instruments are supplied with standards calibrated and certified according to ISO 17025 UKAS.