TA Instruments DHR Series User manual

Revision G Issued November 2013
Getting Started Guide
DHR Series and AR Series
Small Angle Light-Scattering (SALS)
Accessory

Page 2 DHR/AR Series SALS Accessory Getting Started Guide
Notice
The material contained in this manual, and in the online help for the software used to support this instru-
ment, is believed adequate for the intended use of the instrument. If the instrument or procedures are used
for purposes other than those specified herein, confirmation of their suitability must be obtained from TA
Instruments. Otherwise, TA Instruments does not guarantee any results and assumes no obligation or liabil-
ity. TA Instruments also reserves the right to revise this document and to make changes without notice.
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erty covering subject matter in this document. Except as expressly provided in written license agreement
from TA Instruments, the furnishing of this document does not give you any license to these patents, trade-
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licenses are granted to the purchaser other than as specified above.
©2013 by
TA Instruments — Waters LLC
159 Lukens Drive
New Castle, DE 19720

DHR/AR Series SALS Accessory Getting Started Guide Page 3
Introduction
Important: TA Instruments Manual Supplement
Please click the TA Manual Supplement link to access the following important information
supplemental to this Getting Started Guide:
• TA Instruments Trademarks
• TA Instruments Patents
• Other Trademarks
• TA Instruments End-User License Agreement
• TA Instruments Offices

Page 4 DHR/AR Series SALS Accessory Getting Started Guide
Notes, Cautions, and Warnings
This manual uses NOTES, CAUTIONS, and WARNINGS to emphasize important and critical
instructions. In the body of the manual these may be found in the shaded box on the outside of the page.
NOTE: A NOTE highlights important information about equipment or procedures.
CAUTION: A CAUTION emphasizes a procedure that may damage equipment or cause loss of data
if not followed correctly.
MISE EN GARDE: UNE MISE EN GARDE met l'accent sur une procédure susceptible d'endom-
mager l'équipement ou de causer la perte des données si elle n'est pas correctement suivie.
Regulatory Compliance
Safety Standards
For Canada
CAN/CSA-C22.2 No. 61010-1 Safety requirements for electrical equipment for measurement, control, and
laboratory use, Part 1: General Requirements.
CAN/CSA-C22.2 No. 61010-2-010 Particular requirements for laboratory equipment for the heating of
materials.
For European Economic Area
(In accordance with Council Directive 2006/95/EC of 12 December 2006 on the harmonization of the laws
of Member States relating to electrical equipment designed for use within certain voltage limits.)
EN 61010-1:2001 Safety requirements for electrical equipment for measurement, control, and laboratory
use, Part 1: General Requirements + Amendments.
EN 61010-2-010:2003 Particular requirements for laboratory equipment for the heating of materials +
Amendments.
For United States
UL61010-1:2004 Electrical Equipment for Laboratory Use; Part 1: General Requirements.
UL61010A-2-010:2002 Particular requirements for laboratory equipment for the heating of materials +
Amendments.
A WARNING indicates a procedure that may be hazardous to the operator or
to the environment if not followed correctly.
Un AVERTISSEMENT indique une procédure qui peut être dangereuse pour
l'opérateur ou l'environnement si elle n'est pas correctement suivie.

DHR/AR Series SALS Accessory Getting Started Guide Page 5
Electromagnetic Compatibility Standards
For Australia and New Zealand
AS/NZS CISPR11:2004 Limits and methods of measurement of electronic disturbance characteristics of
industrial, scientific and medical (ISM) radio frequency equipment.
For Canada
ICES-001 Issue 4 June 2006 Interference-Causing Equipment Standard: Industrial, Scientific, and Medical
Radio Frequency Generators.
For the European Economic Area
(In accordance with Council Directive 2004/108/EC of 15 December 2004 on the approximation of the
laws of the Member States relating to electromagnetic compatibility.)
EN61326-1:2006 Electrical equipment for measurement, control, and laboratory use-EMC requirements-
Part 1: General Requirements. Emissions: Meets Class A requirements per CISPR 11. Immunity: Per
Table 1 - Basic immunity test requirements.
For the United States
CFR Title 47 Telecommunication Chapter I Federal Communications Commission, Part 15 Radio
frequency devices (FCC regulation pertaining to radio frequency emissions).

DHR/AR Series SALS Accessory Getting Started Guide Page 6
Safety
Do not attempt to service this accessory, as it contains no user-serviceable components.
Required Equipment
While operating this accessory, you must wear eye protection that either meets or exceeds ANSI Z87.1
standards. Additionally, wear protective clothing that has been approved for protection against the
materials under test and the test temperatures.
Electrical Safety
You must unplug the instrument before doing any maintenance or repair work; voltages as high as
120/240 volts AC are present in this system.
Radiation Danger
Instrument Symbols
The following label is displayed on the accessory for your protection:
WARNING: High voltages are present in this instrument. Maintenance and
repair of internal parts must be performed only by TA Instruments or other
qualified service personnel.
AVERTISSEMENT: Présence de tensions élevées dans cet instrument. La
maintenance et la réparation des pièces internes doivent être effectuées
uniquement par TA Instruments ou tout autre personnel d'entretien qualifié.
WARNING: The SALS Accessory uses a Class 2 laser product. Do not stare
into beam.
AVERTISSEMENT: L'accessoire SALS utilise un produit laser de classe 2. Ne
regardez pas fixement le faisceau.
Symbol Explanation
This symbol on the front of the SALS Accessory warns that laser light is present
during operation of this instrument.
The SALS Accessory uses a Class 2 laser product. Do not stare into the beam.
Ce symbole affiché à l'avant de l'accessoire SALS avertit de la présence d'un
rayonnement laser pendant l'utilisation de cet instrument.
L'accessoire SALS utilise un produit laser de classe 2. Ne regardez pas fixement
le faisceau.

DHR/AR Series SALS Accessory Getting Started Guide Page 7
Please heed the warning labels and take the necessary precautions when dealing with those parts of the
instrument. This manual is intended to be used in conjunction with the DHR Getting Started Guide and the
AR-G2/AR 2000ex/AR 1500ex Rheometer Getting Started Guide. For full details on the operation of the
rheometer and safety information, please refer to that manual. Both manuals contain cautions and warnings
that must be followed for your own safety.

DHR/AR Series SALS Accessory Getting Started Guide Page 8
Table of Contents
Introduction ......................................................................................................................................... 3
Important: TA Instruments Manual Supplement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Notes, Cautions, and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Regulatory Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Safety Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Electromagnetic Compatibility Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Required Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Electrical Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Radiation Danger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Instrument Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Chapter 1:
Introducing the SALS Accessory ................................................................................. 10
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Scattering Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
The Direction of Incident Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Adjusting the Plane of Focus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Polarization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Intensity Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Intensity Corrections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Chapter 2:
Installing the SALS Accessory ..................................................................................... 16
Installing the SALS Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Mounting the Upper and Lower Fixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Attaching the Upper Geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Connecting the Camera and Installing the Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Aligning the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Chapter 3:
Calibrating the SALS Accessory .................................................................................. 21
Preparing the SALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Level 1 Experiments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Level 2 Experiments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Level 3 Experiments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Calibrating the Scattering Angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Calculation of the Scattering Angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Mie Scattering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Using the Laven Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Preparing and Loading the Calibration Sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Using ImageJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Calculating the Optics Correction Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

DHR/AR Series SALS Accessory Getting Started Guide Page 9
Chapter 4: Using the SALS Accessory ............................................................................................ 32
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Loading the Sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Setting the Focal Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Locking Exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Selecting the Image Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Exporting Images . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Index ................................................................................................................................................... 34

DHR/AR Series SALS Accessory Getting Started Guide Page 10
Chapter 1:
Introducing the SALS Accessory
Overview
Small Angle Light Scattering (SALS) Accessory is a powerful tool for studying the properties of static and
sheared dispersions. A beam of laser light is trained on the sample and is scattered by interactions with the
electrons of objects within the sample. If the light is scattered through a small angle, the pattern formed can
be observed using a two-dimensional sensor such as a USB camera. From this pattern, called the scattering
pattern, information about the size, shape, orientation, and spatial distribution of the particles of the
dispersion can be inferred.
Figure 1 SALS Accessory.
The TA Instruments SALS Accessory is a Smart Swap™ system designed for use with the DHR-3, DHR-
3, and AR-G2/AR2000ex Rheometers. A patented, Peltier temperature-controlled lower plate, with sap-
phire window, allows the laser to be trained on the sample. The resultant scattered light is transmitted
through the upper transparent quartz geometry and is observed by a lens and camera assembly. The camera
images are stored with the data points and can be exported for additional treatment and analysis.
Scattering Theory
When electromagnetic radiation such as visible light encounters an object, interference between the radia-
tion and the electrons of the object occurs. The result is a change in the direction of the radiation. The
effect is most noticeable when the size of the object is similar in scale to the wavelength of the radiation, in
which case the effect is called diffraction, or scattering. The pattern produced by the scattered radiation can
be used to gain information on the size, shape, orientation and spatial distribution of the objects responsible
for the scattering. Many of the structures produced by surfactant molecules, for example vesicles and
wormlike micelles, have at least one dimension in the range that will scatter visible light, and the technique
is well suited to their study.

DHR/AR Series SALS Accessory Getting Started Guide Page 11
In scattering theory, light is described by its angular wavenumber, k, defined as 2π/λwhere λis the wave-
length of the light in the scattering medium. Since λ= λ0/ nwhere λ0is the wavelength of the light in a
vacuum, and n is the medium refractive index, k= 2πn/λ0. The dimensions of kare therefore (radians x)
inverse length.
The light wavevector, k, is defined as ktimes a unit vector in the direction of the light. Since the scattering
involved in SALS is almost completely elastic, the wavevector of the incident light, ki, will have the same
magnitude as the scattered light, ks, such that |ki| = |ks| = k.
The scattering vector, q, is defined by q= ks– kii(see the figure below).
Figure 2 Scattering vector, q, and scattering angle,
θ .
It can be shown by simple trigonometry that q= 4πsin(θ/2) /λ, where q = |q| and the scattering angle θis
the angle by which the direction of the light has changed.
The approximate idea of the length scales probed by the light can be obtained from Bragg's law:
λ= 2 L sin
φ
where L is the length scale and the angle φdefined for Bragg's law is half the angle φdefined for SALS (by
convention the symbol θis used rather than φfor Bragg's law, but in this context that would be confusing).
So:
L = λ/ 2 sin
φ = λ/ 2 sin (θ/2)
So L = 2 π/ q
Thus the greater the length scale, the lower the value of q, and hence the smaller the scattering angle. In TA
Instruments SALS system, the range of angles over which measurements can be made is about 6° to 26.8°.
The wavelength of the laser used is 635 nm, and if the sample refractive index is taken to be that of water,
i.e., 1.332, the qrange is 1.38 µm-1 to 6.11 µm-1 and the length scale range is about 1.03 µm to about
4.6 µm.
The scattering angle can therefore be used to gain an idea of the length scale of the structures present in the
sample. The intensity of the light and the scattering pattern give some idea of the spatial distributions of the
particles, and their number density.
The Direction of Incident Light
In principle, the incident light can be in any direction relative to the shear direction, but it is usual to
arrange it along one of the principle axes. In the TA Instruments system the shear gradient direction is
used, so scattering occurs in the plane of the vorticity (neutral) direction - shear direction (see below).
Figure 3 The three directions of a sheared sample.

DHR/AR Series SALS Accessory Getting Started Guide Page 12
Product Description
The laser used in the SALS Accessory is a Class II 0.95 mW diode laser, wavelength 635 nm, circular
beam with diameter of 1.1 mm, beam divergence (typical) 0.7 mrad.
The upper geometry is a 50 mm diameter x 2 mm thick optical quartz disk, refractive index 1.457 at
635 nm. To comply with the criterion for the single-point correction for the parallel plate geometry [M.S.
Carvalho, M. Padmanabhan and C.W. Macosko, J. Rheol. 38 (1994) 1925-1936], the laser is set at 0.76 x
the quartz disk diameter, i.e., 19 mm, from the axis of rotation of the disk.
The image sensor’s effective area is 6.6 mm x 5.3 mm, effective pixels 1280 x 1024, pixel size 5.2 µm
square.
Figure 4 SALS Accessory components.
Figure 4 (above) provides a schematic of the SALS accessory components. A schematic of the optical sys-
tem is shown in Figure 5. The pinhole is set at the focal point for 635 nm parallel light of convex lens 2;
divergent or convergent light will not pass through to the sensor. The image point will, therefore, be at the
focal point for parallel light of the convex (DCX) lens 1 – planoconvex (PCX) lens – quartz disc – sample
system. The depth within the sample of this point will depend on the refractive index of the sample, and the
position of the adjustable planoconvex lens. It should be noted that as a pin hole has a finite size, the sensor
'sees' light from a cylinder rather than a single point.
Upper mounting plate
Polarizing ring
Camera chip
Pinhole
Lenses
Sapphire window
Filter draw
Laser
Quartz plate
Peltier plate
Smart Swap

DHR/AR Series SALS Accessory Getting Started Guide Page 13
Figure 5 Schematic of TA Instruments SALS optics.
The position of the PCX lens is indicated by the inscribed scale. One rotation of the lens holder is equiva-
lent to a travel distance of 1 mm. The zero position is assumed to be where the DCX and PCX lens are in
contact.
A simplified view of the optics is given in Figure 6, in which the deflection through 90° is ignored (this
does not affect principle of the optical system).
Figure 6 Simplified view of the SALS optics.
The maximum scattering angle will also depend on the position of the planoconvex lens and the refractive
index of the sample.
Adjusting the Plane of Focus
The position of the planoconvex lens indicated in Figure 6 can be adjusted to alter the image point within
the sample. It is expected that the plane of focus will be at or close to the sample midheight. The position
of the lens that gives this will depend on the refractive index of the sample.

DHR/AR Series SALS Accessory Getting Started Guide Page 14
Polarization
The diode laser used produces plane polarized light. In the TA Instruments system, the direction of polar-
ization is aligned with the shear direction. An analyzer (i.e., a second polarizer) is placed in the path of the
diffracted light. There are two positions for the analyzer, parallel or perpendicular to the direction of polar-
ization of the incident beam. The degree of polarization produced in the sample by shearing can be investi-
gated by comparing the scattering patterns produced with analyzer in the parallel and perpendicular
positions.
Intensity Adjustment
The intensity of the laser light itself cannot be adjusted, but the intensity of the incident light can be
reduced by placing a neutral density filter between the laser and the sample.
Intensity Corrections
Corrections to the intensity are only required for level 3 experiments (see Chapter 3). The scattered light
falls on a flat sensor consisting of an array of pixels. The absolute intensity of the light, Iabs is obtained
from the intensity reported by the sensor, Isensor through the relationship:
where bit is the bit depth of the chip. The sensor used has a gamma (λ) value of 1.0, so this correction is not
required.
However, a correction does need to be made for the fact that the flux of protons on each individual pixel
will depend on the angle at which it hits, and the distance of the pixel from the scattering center. It can be
shown that the correction for the angle is given by:
Iangcorr = Iabs / cosθ
where Iangcorr is the intensity of the light corrected for the angle at which it hits.
The flux of protons on a fixed area is also inversely proportional to the square of its distance, D, from the
light source, and since D2= d2/ cos2θ, where dis the distance between the source and the plate in the
normal direction (Figure 7), the total corrected intensity, Icorr is given by:
Icorr = Isensor / cos3θ
Figure 7 Paths for scattered (D) and unscattered (d) light.

DHR/AR Series SALS Accessory Getting Started Guide Page 15
Specifications
Table 1: SALS Accessory Specifications
q Vector Range ~1.38µm-1 to 6.11µm-1
Scattering Angle ~6° to 26.8°
Laser 635nm 0.95mW class 2
Peltier Temperature Controlled 5 to 95°C
WARNING: The upper temperature limit is set by the optical adhesive that
retains the sapphire window. Do no exceed this limit.
Avertissement: Le limite de température supérieure est réglée par l'adhésif
optique qui retient la fenêtre de saphir. Ne dépassez pas cette limite.

DHR/AR Series SALS Accessory Getting Started Guide Page 16
Chapter 2:
Installing the SALS Accessory
Installing the SALS Accessory
The steps needed to attach the SALS Accessory to the rheometer involve the following:
1Mounting the upper and lower fixtures
2Attaching the upper geometry
3Connecting camera and installing drivers
4Aligning the system
Mounting the Upper and Lower Fixtures
Follow these steps to mount the fixtures:
1Ensure that the rheometer is turned on. Raise the head to the maximum travel.
2Attach the upper fixture to the mounting ring on the underside of the instrument head using the three
captive screws provided.
NOTE: The camera should project to the right of the instrument when viewed from the front.
3Mount the lower fixture on the rheometer using the Smart Swap connection.
4Remove lens cover from upper assembly.
Attaching the Upper Geometry
The procedure for attaching a geometry to the instrument spindle is as follows:
1Push the geometry up the spindle and hold it while locating the draw rod in the screw thread of the
geometry.
2Screw the draw rod down, turning it clockwise. It should be screwed finger tight but not forced.
To remove the geometry, perform this operation in reverse.

DHR/AR Series SALS Accessory Getting Started Guide Page 17
Connecting the Camera and Installing the Drivers
To get your camera up and running, follow these steps before plugging in the camera USB cable:
1Download the LuCam Software V6.0.3 or higher from the link below:
http://www.lumenera.com/support/downloads/industrial-downloads.php
2Run the downloadable executable LuCamSoftware-v6.0.3.exe and follow the instructions given.
3Once installed, plug in the camera to a spare USB port and follow the instructions to install from the
“recommended” location.

DHR/AR Series SALS Accessory Getting Started Guide Page 18
Aligning the System
The laser in the base and the surface of the Peltier Plate are factory aligned and should not require any
adjustment.
A small amount of adjustment will be necessary to align the upper fixture whenever it is fitted. This is most
easily achieved by using a sample with a known scatter pattern.
The scattering from a random arrangement of spherical particles, with diameters greater than the wave-
length of the incident light, results in series of concentric rings that diminish in intensity as the scattering
angle increases (Mie scattering). Polystyrene micro particles of nominal diameter (3 µm) are suitable for
this purpose, and these can be obtained from Sigma-Aldrich (Fluka), product no. 80304. They are supplied
at a solids content of 2% by weight and should be diluted by a factor of about 200 using purified water to
eliminate multiple scattering.
Follow these steps to adjust the alignment:
1Turn on the rheometer and start TRIOS Software.
2Set the temperature of the Peltier Plate to 25°C.
3Ensure upper geometry and lower plate are clean and free from lint.
4Zero the gap.
5Raise the head.
6Set the focal point to 500 µm by setting the adjustable front lens to 1.35. See the figure below.
Figure 8 SALS front lens.

DHR/AR Series SALS Accessory Getting Started Guide Page 19
7Ensure the polarizer ring (analyzer) on the upper fixture is set to “in parallel.” This is when the ring is
rotated fully up, as shown in the image below.
Figure 9 Polarizer ring.
8Remove any neutral density filter from the drawer in the lower fixture. See Figure 10 below.
Figure 10 Removing the filter.
9Place two or three drops of the alignment solution on the window in the Peltier Plate.
10 Turn on the bearing lock and close the geometry gap to 1000 µm.
11 Turn on the laser from the TRIOS Control panel.
12 Turn on the camera image by using the camera icon on the View ribbon. For ease of use, it is convenient
to have a PC in a dual monitor configuration so that the scatter image can be viewed on a separate screen.
Filter drawer

DHR/AR Series SALS Accessory Getting Started Guide Page 20
13 Adjust the body of the upper fixture in the swivel mount (see below, left) until you obtain a pattern of
concentric rings similar to those shown in the below-right image.
Figure 11 Swivel mount.
NOTE: It may be necessary to adjust the camera settings such as exposure, brightness, and contrast by
accessing the Camera properties on the camera setup screen (right-click on image). The lighting controls
are not used by this system.
14 Once you are happy with the image and the system is aligned, raise the rheometer head. The sample can
then be cleaned from the plates.