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Related Manuals for Rhopoint NOVO-GLOSS IQ
Summary of Contents for Rhopoint NOVO-GLOSS IQ
- Page 1 NOVO-GLOSS IQ GONIOPHOTOMETER Instrument Manual www.64817.com TEL:0756-2236929...
- Page 2 R H O P O I N T I N S T R U M E N T S L T D Novo-Gloss IQ Operation Manual...
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Page 3: Table Of Contents
Why is specular appearance important? ........2 Disadvantages of standard gloss measurement....... 3 Specular reflection and surface texture ........4 Measuring Standard Gloss with the Novo-Gloss IQ....6 Haze ..................6 Distinctness of Image (DOI) ............. 8 RSpec- Peak Specular Reflectance ......... 9 Goniophotometric Profile............ -
Page 4: Novo-Gloss Iq Specular Goniophotometer
These values are used to assess the visual impact and reflective quality of many coated, painted and polished surfaces. Goniophotometric output from the Novo-Gloss IQ analysed in MS Excel. This example shows three papers with different gloss levels. 1 1 1 1... -
Page 5: Why Is Specular Appearance Important
The instrument provides goniophotometric profiles, gloss, haze and distinctness of image values which can be used to assess the visual qualities of a surface. As well as assessing the visual impact of a surface, the Novo-Gloss IQ can also be used to identify problems with coating formulation and application. -
Page 6: Disadvantages Of Standard Gloss Measurement
The Novo-Gloss IQ, with its array of light sensors mimics the effect of reflected light in the human eye. More detailed information from this instrument allows the user to measure and control surface defects that are undetectable with a standard glossmeter. -
Page 7: Specular Reflection And Surface Texture
Specular reflection and surface texture The reflection from a paint film contains includes a mixture of specular and diffuse light. There are several factors that influence the gloss and appearance quality of a coating; • The chemical composition of the coating/topcoat/varnish vehicle, the refractive index of this component largely determines how light is reflected from the surface. - Page 8 By measuring Gloss, Haze and DOI, the Novo-Gloss IQ quantifies the visual impact of a product and the nature and frequency of textures on its surface. Most painted and coated objects have some degree of surface texture which impacts their visual appearance. These textures can be described by their size and the visual effect they have on the paint surface or the quality of a reflected image.
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Page 9: Measuring Standard Gloss With The Novo-Gloss Iq
Measuring Standard Gloss with the Novo-Gloss IQ The Novo-Gloss IQ calculates gloss using the parts of the goniophotometric profile that corresponds to the angles described in ISO 2813 and ASTM 523. Gloss results measured with the IQ have been verified using BAM traceable gloss tiles and conform to this standard throughout the measurement range. - Page 10 Measuring Haze with the Novo-Gloss IQ The Novo-Gloss IQ automatically compensates for sample surface flatness and texturing allowing haze measurements to be taken on most product surfaces. Gloss Haze values are calculated using the angular tolerances described in ASTM E430.
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Page 11: Distinctness Of Image (Doi)
All these effects can be measured with the Novo-Gloss IQ. DOI has been measured instrumentally and subjectively in the automotive industry for many years. -
Page 12: Rspec- Peak Specular Reflectance
The Novo-Gloss IQ measures the DOI of a surface by quantifying the way a reflected measurement beam is spread and distorted around the specular angle. -
Page 13: Goniophotometric Profile
Visual inspection however, shows the first panel to have a very high degree of orange peel. When measured with the Novo-Gloss IQ, the instrument measures gloss identically to a standard glossmeter (87.2 GU-89.0 GU). It also quantifies the... - Page 14 Calculating Gloss, Haze, RSpec and DOI from a Goniophotometric profile For the above example at 20⁰, Novo-Gloss IQ calculates the Gloss value by summing the gloss values +/- 0.9⁰ from the specular angle. These tolerances are specified in ASTM D523/ISO 2813.
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Page 15: Accessories
Accessories The Novo-Gloss IQ is supplied with the following kit • Novo-Gloss IQ 20/60⁰ goniophotometer • BAM traceable high gloss calibration tile with certificate • BAM traceable mirror reflectance calibration tile with certificate • USB-PC data cable • Software disk •... -
Page 16: Power
Power Novo-Gloss IQ is powered with 4 x AA batteries, dry cell or rechargeable may be used. To install or replace the batteries remove the battery panel by unscrewing the two screws. Insert the new cells in the battery cartridge and place in the battery compartment, replace the lid and replace the screws. -
Page 17: Control Panel
Control Panel The Novo-Gloss IQ is controlled using a menu navigation switch, with four way direction buttons and a central READ button. The four directional buttons are used to navigate the menus; the center button takes a measurement. Press the center button to power up the instrument. -
Page 18: Navigating The Menus
Navigating the Menus Accessing the Main Menu To access the main menu simply PRESS and HOLD the center button The main menu screen, the right window contains navigation information, press the corresponding button to access the indicated function. As indicated on the Navigation Screen the following buttons access the following functions •... -
Page 19: Using Short Cuts
Using Short Cuts The four most important menus can be entered at any time during the operation of the instrument without the need to enter the main menu. For quick access to these functions simply press and hold the corresponding button. -
Page 20: Measurement Screen
Measurement Screen The read screen is the default position for the instrument. To return to this screen from any of the MENU screens simply WAIT for 3 seconds. The left screen details the specular appearance indices for the last reading, on the right the goniophotometric profile is displayed. -
Page 21: Calibration
Fingerprints and dust can be removed with the supplied optic cleaning cloth. Scratched or damaged tiles Scratched or damaged tiles are not suitable for calibration. The instrument and tile must be returned to an approved Rhopoint service center for tile replacement and recalibration. - Page 22 Selecting the correct calibration tile For polished metals it is often preferable to measure in percentage reflectance rather than gloss units. To measure in percentage reflectance, use the mirror standard rather than the black glass standard for calibration. Before use the internal calibration values will need to be adjusted and the instrument recalibrated.
- Page 23 The instrument takes a few seconds to calibrate each angle, when it is completed the measurement screen will be displayed.
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Page 24: Taking A Measurement
Taking a measurement The instrument measurement screen To take a measurement, simply press the center button. The instrument will take a few seconds to make each measurement. To offer improved linearity over standard glossmeters, the instrument modulates the light source to provide the optimum amount of light for the detection array. This means that the instrument takes a little longer to measure matt surfaces in comparison to high gloss surfaces. -
Page 25: Instrument Set Up Options
Instrument set up options Set up menu 1 The set up menus can be accessed via the main menu or via a shortcut; • To enter the main menu PRESS and HOLD the center button. Press the down button to access the set up menu. Alternatively, to use the set up menu shortcut •... -
Page 26: Set Up Menu 2
Set up menu 2 Set up menu 2 must be accessed from Set up menu 1 see Switch the Goniophotometric curve on/off To increase the download speed from instrument to PC the full Goniophotometric data can be toggled off. The gloss, haze, DOI and Rspec values are still downloaded with this option switched OFF. -
Page 27: Data Menu
Data Menu The data menus can be accessed via the main menu or via a shortcut; • To enter the main menu PRESS and HOLD the center button. Press the right button to access the set up menu. Alternatively, • PRESS and HOLD the right button from any screen. Delete the last reading from statistics memory •... -
Page 28: Index
8, 9 selection, 24 BAM, 6, 13 Metallic Pigments, 5 Calibration, 21 natural haze calibration tile switching on/off, 26 Novo-Gloss IQ inspection and cleaning, 21 selection, 22 control panel, 16 Coating problems menu navigation, 17 identification, 2 menu shortcuts, 18...
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