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Rhopoint - Concrete Clarity Meter (CCM)

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Rhopoint - Concrete Clarity Meter (CCM) Gloss/DOI/Haze/Appearance Testers Coating / Paint Testing

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The Rhopoint IQ Concrete Clarity Meter 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.

DISTINCTNESS OF IMAGE (DOI)

– A measure of how clearly a reflected image will appear in a reflective surface and is used to quantify effects such as orange peel and surface waviness.

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 Concrete Clarity Meter


Surface with high haze

REFLECTANCE HAZE

Orange peel dramatically reduces appearance quality without affecting gloss readings. The Rhopoint IQ Concrete Clarity Meter with DOI measurement can quantify the differences


Surface with poor DOI

– 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: Resin transfer, lack of refinement, burnish and polishing marks, fine scratches, poor cleanliness/surface residue.

LEVEL NAME DISTINCTNESS 0F IMAGE (DOI) GLOSS IMAGE CLARITY VALUE, % LEVEL
1 Flat
(Ground)
Images of objects being reflected have a flat appearance. 0-9 <10
2 Satin
(Honed)
Images of objects being reflected have a matte appearance. 10-39
3 Polished Images of objects being reflected do not have a sharp and crisp appearance but can be easily identified. 40-69
4 Highly
Polished
Images of objects being reflected have a sharp and crisp appearance as would be seen in a near-mirror like reflection. May require grouting 70-100

DISTINCTNESS OF IMAGE (DOI) GLOSS

DOI is the sharpness of images of objects produced by reflection at a polished surface, sometimes called image clarity

Measurement by Image Clarity Meter (ASTM D5767): The DOI, Image Clarity Value, obtained from this test method, range from 0 to 100 with a value of 100 representing perfect DOI (image clarity).

HAZE

Haze is the cloudiness or milky appearance of images of objects produced by reflection in a polished surface

The minimum number of tests distributed across the polished surface should be three for areas up to 1000 ft² and one additional test for each 1000 ft² or fraction thereof. This applies to both the Image Clarity Value and Haze Index.

The mean (average) values of the test results should be used to evaluate compliance with this chart

*Reproduced with the permission of “Concrete Polishing Council of the American Society of Convcrete Contractors”

Simultaneous measurement of all parameters, results are date/time stamped.

Statistics per measured parameter.

Graphical reporting for quick trend analysis.

Easy Batching

User definable batch names and batch sizes for quicker and more efficient reporting.

Rapid data transfer

Software-free data transfer.
USB connection to PC instantly recognises the device as a drive location which facilitates the quick transfer of files using Windows Explorer or similar.

Direct data input via BT wireless

Instantly transmit measured readings directly to programs such as MS Excel on your PC / tablet to greatly simplify the reporting process.

Statistical analysis via novo-gloss multi gauge software

This software provides an easy means to measure, import and compare data and export the measurments into several other formats.
Using the Rhopoint Concrete Clarity Meter can help to achieve more consistent surface finishes.

Specifications

GLOSS

A measurement proportional to the amount of light reflected from a surface

Geometry: The correct measurement geometry should be used according to the sample finish – mid gloss: 60°, high gloss: 20°.

20° Improved accuracy and resolution on high gloss & metallic samples (>70GU when measured at 60°) Measurement range: 0-2000 GU
60° Universal angle – all gloss levels
Measurement range: 0-1000 GU
Measurement range: 0-100 GU 100-2000GU
Resolution: 0.1 GU  
Repeatability: ±0.2 GU ±0.2%
Reproducibility: ±0.5GU ±0.5%

DOI

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

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 reflective surface to be measured.

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.

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

RSPEC

The peak gloss measured over a very narrow angle. RSPEC
Usage: It is very sensitive to surface texture and can be used to identify subtle differences in smooth surfaces

Peak Specular Reflectance: 20° ±0.09905°

Measurement range: 0-2000 GU

Instrument Specifications

Operation

  • Full colour easy to read screen
  • Adjustable brightness
  • 6 button touch sensitive interface

Construction

  • All aluminium construction – enclosure, optics, standard holder
  • Integrated calibration holder with in-position detector for error free calibration

Statistical Analysis

  • Max, min, mean, SD
  • All measured parameters

Graphical Analysis

  • On board trend analysis
  • Gloss and IQ values

Powers

  • Rechargeable lithium ion
  • 17+ hours operation
  • 20,000+ readings per charge

Recharge Time

  • Mains charger: 4hrs

Memory

  • 8 MB = 999 readings
  • User definable alphanumeric batching

Data Transfer

  • BT wireless
  • PC compatible
  • USB connection, no software installation required
  • 20°: 6mm x 6.4mm
  • 60°: 6mm x 12mm
  • Operating temperature: 15 - 40° C (60 - 104° F)
  • Humidity: up to 85%, non condensing

Dimensions & Weight

  • 65mm x 140mm x 50mm (H x W x D)
  • 790g
  • Packed weight: 1.75kg
  • Packed dimensions: 180mm x 330mm x 280mm (H x W x D)
  • Commodity code: 9027 5000
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