Rhopoint IQ 20/60 User manual

Rhopoint IQ
Operating Instructions
Thank you for purchasing this Rhopoint product.
Please read these instructions carefully before operating this product and retain them for future
reference. The images shown in this manual are for illustrative purposes only.
Manufactured by Rhopoint Instruments in the United Kingdom

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Rhopoint IQ
This instruction manual contains important information about the setup and use of
the Rhopoint IQ. It is essential that the contents be read before powering up and
operating the instrument.
If this instrument is passed to other user’s you must ensure that the instruction manual is supplied with the
instrument. If you have any questions or require additional information about the Rhopoint IQ please contact
the Rhopoint Authorised Distributor for your region.
The technology and components used in the device are based on state-of-the art optic and electronics. As part
of Rhopoint Instruments commitment to continually improving the technologies used in their products, they
reserve the right to change information included in this document without prior notice.
© Copyright 2015 Rhopoint Instruments Ltd. All Rights Reserved.
Rhopoint IQ and Rhopoint™ are registered trademarks of Rhopoint Instruments Ltd. in the UK and other
countries.
Other product and company names mentioned herein may be trademarks of their respective owner.
No portion of the software, documentation or other accompanying materials may be translated, modified,
reproduced, copied or otherwise duplicated (with the exception of a backup copy), or distributed to a third
party, without prior written authorisation from Rhopoint Instruments Ltd.
Rhopoint Instruments Ltd.
Rhopoint House
Enviro 21 Business Park
Queensway Avenue South
St Leonards on Sea
TN38 9AG UK
Tel: [phone]
Email: [email protected]
Website: www.rhopointinstruments.com

3
Rhopoint IQ
Contents
1About the Rhopoint IQ 6
2Accessories 7
3Optional items 7
4Functional Overview 8
5Power 9
6USB Connectivity 9
7Switching the instrument on 10
8Operation 11
9Menu Screen 15
10 Batching Options 16
11 Setup Screen 17
12 Data & Batch Screen 18
13 Calibration Screen 19
14 Measurement Screen 20
15 Pass/Fail Setup Screen 22
16 IQ Screen 23
17 Control Screen 24
17 Bluetooth Communication and Pairing 25
18 Instrument Setup Screen 29
19 Maintenance Screen 31
20 About Screen 31
21 Appearance Theory 33
22 Why is Reflected Appearance Important? 34
23 Disadvantages of standard gloss measurement 35
24 Gloss 36
25 % Reflectance 37
25 Haze 38
26 Measuring Haze with the Rhopoint IQ 39
27 Haze Compensation 39

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Rhopoint IQ
28 Corrected haze measurement on metallic coatings 40
29 Distinctness Of Image (DOI) 41
30 Reflected Image Quality (RIQ) 42
30 RSpec- Peak Specular Reflectance 43
29 Goniophotometric Profile 44
30 Calculating Gloss, Haze, RSpec and DOI from a Goniophotometric
Profile
45

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Rhopoint IQ
Storage and Handling
This instrument contains precision optics and electronics. You should avoid knocking or dropping
the device as the resulting impact could cause serious damage.
In some circumstances the optical components in the instrument could become misted due to
temperature change. It is recommended that the instrument is not used until it has stabilised to
ambient temperature.
Ensure that the instrument is not exposed to moisture, chemicals or to any corrosive vapours.
Do not interfere or place any objects inside the measuring aperture as damage to the measuring
system could occur.
The instrument housing and screen are normally resistant to a variety of solvents however it is not
possible to guarantee resistance to all chemicals therefore the surfaces of the instrument should
only be cleaned using a soft, moist cloth.
Prevent exposure of the instrument to direct sunlight for prolonged periods and to continuous
humidity and condensation.

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Rhopoint IQ
About the Rhopoint IQ
The Rhopoint IQ is an advanced measuring instrument used to quantify the quality of surface appearance.
Unlike a standard glossmeter, the IQ has the unique capability of measuring and detecting quality problems
caused by microscopic texture in the surface that cause haze and orange-peel effects which lead to poor
Distinctness of Image (DOI),
These factors can seriously affect the visual impact and reflective quality of many coated, painted and
polished surfaces. By measuring the quality of the reflected image, it accurately profiles how light is reflected
from a surface.
The instrument uses a standard optical configuration at 60° and 85° to measure the gloss of matt and semi-
gloss finishes.
However, at 20° the IQ uses a diode array to measure the distribution of the reflected light at +/- 7.25° from
the specular angle of reflection in steps of 0.02832°.
This technology allows the instrument to calculate Gloss, Haze, DOI, RIQ and RSpec providing the user with a
complete analysis of the reflective quality of the surface.
Definitions of each of the parameters measured by the IQ can be found in the section “Appearance Theory”
detailed later in this manual.

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Rhopoint IQ
Accessories
The instrument is supplied as a standard package complete with all accessories required to calibrate and
recharge the unit including:-
• Rhopoint IQ 20/60 or 20/60/85 Glossmeter / Goniophotometer.
• NIST traceable high gloss calibration tile including UKAS certificate.
• Cleaning cloth for calibration tile.
• NIST traceable instrument certificate.
• USB mains charger with four selectable mains input connectors (UK/Europe/US/Australia).
• USB PC cable.
• Quick Start operating instructions.
• Protective instrument carry case.
• Location template.
• Product warranty card.
Optional Items
NIST traceable mirror gloss calibration tile including certificate

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Rhopoint IQ
Functional Overview
Label No. Function
1On / Off Button
2High Resolution Graphic Display
3Up/Down/Left/Right Buttons
4Operate / Enter Button
5Calibration Tile (magnetised)
6Mains / USB Charger Input Connector
1
2
3
4
5
6
The instrument is controlled by pressing the relevant touch sensitive button.
Functionality is dependent on whether the instrument is in menu or operate mode as detailed in the operation
sections that follow

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Rhopoint IQ
Power
The Rhopoint IQ is powered by an integrated high capacity lithium ion cell.
Fully charged the instrument will operate continuously for >17 Hours or >20,000 readings.
A mains powered USB charger is provided with the unit. This will fully charge the unit when connected to the
unit’s USB input (6) in up to 9 hours.
Alternatively, the instrument can be powered and charged using the USB cable attached to any compatible
USB host (e.g. laptop etc.), Please note that charging from a USB host such as a laptop may take longer due
to the lower current available.
USB Connectivity
Three functions are available when the Rhopoint IQ is connected to a computer using the USB cable supplied.
Access Files – Allows access to measurement and configuration files on the instrument. The instrument
appears as a USB drive named IQ-METER. When selected the display on the instrument shows a USB memory
key as shown below.
USB Remote Control - Allows control of the IQ remotely by sending ASCII commands from a computer or PLC.
In this mode the instrument displays “REMOTE CONTROL ACTIVE” on the main measurement screen.
Battery Charge Only – Allows USB charging of the instrument – all instrument functions are available
however do not operate the instrument whilst it is connected via USB and/or charging.

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Rhopoint IQ
Switching the Instrument on
To switch the Rhopoint IQ on, press the On / Off button located near the USB socket.
The instrument will display the IQ logo and then the Home screen displaying measurement parameters
according to the instruments default settings or those previously configured.
Similarly, the instrument can be powered off (dependent on configuration – see Instrument Setup) by pressing
the On/Off button for three seconds.

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Rhopoint IQ
Operation
With the unit switched on and initialised the IQ will display the Home screen as shown below.
In this mode, measurements can be made by simply pressing the Operate button on the instrument’s keypad.
Before each measurement the IQ automatically detects whether a calibration standard is fitted. With the Auto
Calibration option set to ON in the settings menu (detailed later in the Instrument Settings section of this
manual) a dialogue box will appear when the operate button is pressed as shown below
Two options are available: either to “Calibrate” the instrument on the calibration standard before making the
measurement or to “Measure” without performing a calibration. Press the Left/ Right and Enter buttons on
the keypad to select the required option.
If “Calibrate” is selected the instrument will perform a calibration on the calibration standard and display
a confirmation dialogue box when completed. Selecting the “Confirm” option will save the calibration
information to the instrument’s memory, which will also be confirmed by the calibration tile Gloss and IQ
readings appearing on the instruments display. Alternatively, if “Cancel” is selected the display will return to
the Home screen.
Trigloss + IQ
30/05/23 14:35
MENU n=2CURVE STAT
60°20°85°
88.374.6 99.3
BATCH.002
RIQ
1.696.0 72.6
Hz(E) Rspec
Navigation
options
Batch name
Measurement ready
Battery meter
Gloss geometry
Gloss reading
IQ readings
IQ values
Date and time
Trigloss + IQ
30/05/23 14:35
MENU n=2CURVE STAT
60°20°85°
88.374.6 99.3
BATCH.002
RIQ
1.696.0 72.6
Hz(E) Rspec
Tile Detected
Assigned Values
20°:99.9 60°:99.7 85°:99.6
CALIBRATE MEASURE

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Rhopoint IQ
If “Measure” is selected, the instrument will perform a measurement and after 3 - 4 seconds display the
results.
In the Home screen press the Up button to access the Reflectance curve screen.
The goniophotometric profile and data for the last 20° measurement is displayed.
Measurements can be taken whilst in this screen and the display will update.
Press the Right button to zoom in, the Y axis will auto-scale to fit the reflectance curve data.
Press the Left button to return to the Home screen.
In the Home screen press the Right button to display the gloss statistics screen for the current batch for all
three angles.
Measurements can be taken whilst in this screen and the statistics will be updated each time.
Trigloss + IQ
30/05/23 14:37
MENU n=3CURVE STAT
60°20°85°
88.274.6 99.3
BATCH.002
RIQ
1.696.0 73.0
Hz(E) Rspec
IQ Reflectance 20°
Gloss
74.6
RIQ
96.1
Hz(E)
1.6
Rspec
72.6
75
60
45
30
15
0
17 18 19 20 21 22 23
Statistics 1
STAT n=12
GRAPH
60°20°85°
88.374.6 99.3
Max
Min
Mean
SD
74.6 88.3 99.4
74.3 88.3 99.3
74.5 88.3 99.4
0.1 0.0 0.0

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Rhopoint IQ
Press the Down button to display IQ Statistics.
Press the Right button in the statistics screen to display the graph screen; this screen displays a trend
graph of IQ measurement data. Press the Down button to sequentially display IQ data either all together or
individually.
Press the Up button to display the trend graph for gloss data.
Measurements can be taken whilst in this screen and the graph will be updated after each reading.
Press the Left button to return to the statistics screen.
Press the Right button to return to the Home screen.
Statistics 2
STAT n=12
GRAPH
Hz(E)RIQ Rspec
1.696.1 72.6
Max
Min
Mean
SD
96.1 1.6 72.7
96.0 1.6 72.5
96.0 1.6 72.6
0.0 0.0 0.0
Graph 2 - All
RIQ
Hz(E)
Rspec
100
80
60
40
20
0
1 4 7 10 13
STAT GLOSS RIQ n=10
Graph 1
85°
100
94
88
82
76
0
1 4 7 10 13
STAT GRAPH n=12
60°
20°

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Rhopoint IQ
In the Home screen press the Left button to display the Stored Data screen.
When Memory is set to ON (as detailed later in the Menu Screen section of this manual) measurements can be
recalled and displayed from any batch stored in the IQ memory.
Press the Left / Right buttons to review the measurement data.
Press the Up / Down buttons to select each batch.
At the end of each batch the mean results are displayed.
Press the Enter / Operate button to return to the Home screen.
Stored Data
30/05/23 14:35
Batch Mean
60°20°85°
88.374.5 99.3
BATCH.001
RIQ
1.696.0 72.6
Hz(E) Rspec

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Rhopoint IQ
Menu Screen
The Menu Screen is used for quick access to often used options. Press the Up / Down buttons to navigate
through the options, press the Enter button to select the option required.
Options in the menu screen are: -
Memory – Set to ON, enables storage and batching of measurement results. The amount of available storage
memory is also displayed.
– Set to OFF – disables result storage.
With Memory ON:
Delete Last Reading – Delete last measurement, no. of measurements and statistics data updated to previous
values.
Start New Batch – Start new batch of readings, Batch name is incremented by 1.
Clear Current Batch – Delete entire batch of measurements for current batch.
Delete All Batches – Delete all batches and measurements stored.
Batch Name – Default name is BATCH, a maximum of 8 user defined batch names can be used as detailed in
the “Batching Options” section.
Calibrate Instrument – Perform a calibration of the instrument as detailed under “Operation”.
Switch Off – Turn off the instrument.
Press the Left button to return to the Home screen.
Press the Right button to access the Setup screen.
Menu
SETUP
Memory : ON (100% free)
Delete Last Reading
Start New Batch
Clear Current Batch
Delete All Batches
Batch Name : BATCH
Calibrate Instrument
Switch Off

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Rhopoint IQ
Batching Options
The batching feature allows the user to group measurements together in batches. Each batch has associated
statistics; the data for each batch can be accessed by connecting the instrument to a PC.
The current batch name is displayed on the Home screen in the bottom left corner, the sample number within
that batch is shown in the top Right of the screen indicated with n= (sample number).
A new batch is started using the Start New Batch option in either the Menu screen or the Data menu, note that
the batch name will increment as will the ‘n’ indicator.
The current batch can be cleared in the either the Menu screen or the Data Menu, the batch name will remain
the same but the ‘n’ indicator will reset to zero.
Auto batch size is user defined using the Auto Batch option in the Data Menu. When the number of readings
in the current batch reach the number set by the user the instrument will automatically increment the batch
name and set the ‘n’ indicator to zero.
View Batching Data
Auto batch size is user defined using the Auto Batch option in the Data Menu. When the number of readings
in the current batch reach the number set by the user the instrument will automatically increment the batch
name and set the ‘n’ indicator to zero.
To access the stored batch information, connect the instrument to a PC using the USB data cable supplied.
A new device name “IQ-METER” can be viewed and accessed via “MY COMPUTER”, in this device open the
DATA folder. This folder contains subfolders which contain the data for each individual saved batch. Each
reading is saved as an individual comma separated value (.csv) that contains Gloss, Haze, DOI/RIQ, RSpec,
time and date of reading, serial number and full goniophotometric data for all 512 diode elements.
Each reading also contains the statistics for the batch up to and including that reading. To
access the STATISTICS for the whole batch, the last reading in the batch should be
examined.

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Rhopoint IQ
User Defined Batch Names
Batch names are user definable. With the instrument connected to a PC, open the folder named “CONFIG”.
Within this folder there is a document named “batches”. This is a .csv file that can be opened in Notepad, Excel
or Wordpad.
User defined names should be saved in this document, each name listed on a separate line. Ensure that the
final line is terminated with a carriage return.
The format of these names should only contain letters, no numbers, spaces or other characters can be used.
Once completed save the file then switch the instrument off and on again to initialize the new batch names.
Setup Screen
The Setup Screen is used to customise the instrument to the user’s preference.
Press the Up / Down buttons to navigate through the options, press the Enter button to select the option
required.
Data and Batch Menu - Batch / Data options (See Data & Batch Menu Screen)
Calibration Menu - Calibration options (See Calibration Menu Screen)
Measurement Menu - Geometry setup (See Measurement Menu Screen)
Control Menu - Bluetooth setup (See Control Menu Screen)
Instrument Setup - Language, Date / Time and Power options (Setup Menu Screen)
Factory Menu - Pin locked menu options for Rhopoint Authorised Service Centres
About Menu – Information about the instrument’s firmware version, serial number and last date of Factory
Calibration
Press the Left button to return to the Home screen.
Setup
BACK
Data & Batch Menu
Calibration Menu
Measurement Menu
Control Menu
Instrument Setip
Factory Menu
About

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Rhopoint IQ
Data & Batch Screen
The Data Screen is similar in functionality to that of the menu screen but also allows the selection and setting
of the Auto Batch size.
By selecting Auto Batch to ON the batch size can be selected between 1 - 999 by pressing the Left / Right
buttons to select the relevant digit and the Up / Down buttons to increment / decrement the value. Pressing
the Enter button saves the batch size.
If Batch names have been user defined, as detailed under Batching Options, selection of the Batch Name
required is achieved by repeatedly pressing the Enter button with Batch Name selected.
Press the Left button to return to the Home screen.
Data
BACK
Memory : ON (100% free)
Delete Last Reading
Start New Batch
Clear Current Batch
Delete All Batches
Auto Batch : OFF
Batch Size : N/A
Batch Name : BATCH

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Rhopoint IQ
Calibration Screen
The Calibration Screen is used to setup the instrument calibration to the user’s preference.
Press the Up / Down buttons to navigate through the options, press the Enter button to select the option
required. Options in the Calibration screen are: -
Calibrate instrument - Performs an instant calibration of the instrument; a dialogue box being displayed upon
completion to either “Cancel” or “Confirm”.
Auto Calibration - Set to ON, a dialogue box appears each time a measurement is taken as detailed under
Operation.
- Set to OFF, the dialogue box is disabled; measurements are made.
Calibrate to - Set to Black - a traceable gloss tile is used as the calibration standard
- Set to Mirror - a traceable mirror tile is used as the calibration standard
Tile Value 20, 60, 85 - Set the calibration values for either standard being used for calibration. Pressing the
Enter button selects the value. Press the Left / Right buttons to select the relevant digit
and the Up and Down buttons increment / decrement the value. Press the Enter button
again to save the value.
Error Detection - Set to ON the instrument detects the condition of the calibration standard being used. If
there are fingermarks or debris which cause it to fall outside the value set in Haze Tolerance
an error message is displayed before calibration requesting that the tile be checked for
cleanliness.
- Set to OFF - Values are still checked against the stored reference but no other error
checking is carried out.
Set to CAL - A check is made to see if an appropriate hardware channel is wildly different to what it should be,
indicating that the calibration is being attempted on the wrong tile type.
Set to Hz - A check is carried out on the haze value, if this is higher than expected the tile could be contaminated.
Set to CAL + Hz - A combination of the two above.
Haze Tolerance - Set the tolerance for the standard being used for calibration. An ideal calibration standard
should have zero haze, therefore setting this value anywhere between 0 – 9.9 defines the
acceptable pass band.
Calibration
BACK
Calibrate Instrument
Auto Calibration : OFF
Calibrate to : BLACK
Tile Value 20 : 99.9
Tile Value 60 : 99.7
Tile Value 85 : 99.6
Error Detection : OFF
Haze Tolerance : 0.5

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Rhopoint IQ
Measurement Screen
The Measurement Screen is used to configure the instruments measurement parameters to the user’s
preference. Press the Up / Down buttons to navigate through the options, press the Enter button to select the
option required.
Selectable settings in the Measurement screen are: -
Pass/Fail - Enters the Pass/Fail set up screen.
Auto Measure - Enables or disables automatic measurement mode, used for monitoring surfaces for changes
over a period of time. Press the Enter button to select the required measurement frequency of either 2, 5
or 10 seconds. When auto measure mode is activated, a dialogue box is displayed after the Enter button is
pressed and before the beginning of the measurement sequence, indicating that it is activated. To stop auto
measure simply press the Enter button once again at any time during the sequence.
Range Selects gloss measuring range to:
Auto – Full range
Black – Standard gloss scale
Mirror - Extended scale for highly reflective materials, polished metals, requires calibration
using Mirror standard.
Geometry Selects the angle(s) required for measurement either:
20, 60, 85 individually
20/60 Dual mode
20/60/85 Tri mode
Reflectance Selects the measurement unit to be displayed for each angle:
% - display percentage reflectance, 100% reflectance = 2000GU@20 degrees,
1000GU@60 degrees, 160GU@85 degrees.
GU - display Gloss Units
Press the Left button to return to the Home screen.
Measurement
BACK
Reflectance : %
Auto Measure : 2 Sec
Range : AUTO
Geometry : 20/60/85
IQ