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DSA30B – Drop Shape Analyzer

The versatile manual instrument for changing contact angle tasks

In its Basic version, the DSA30 Drop Shape Analyzer specializes in the accurate wetting measurement by means of the static contact angle. With fast and simple exchange of solid samples and dosing liquids, the instrument assists you in ensuring the effectiveness of cleaning procedures or the quality of coating and wetting processes. Optional accessories for wetting measurements at higher temperatures and manifold upgrade options enhance the spectrum of the instrument.

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  • Analyzing the wettability of plastics, glass, ceramics, wood, paper, or metal
  • Analyzing the effectiveness of hydrophobic coatings and other coatings
  • Analyzing surface cleanliness
  • Wetting analysis at controlled temperature

MEASURING METHODS

  • Contact angle of a drop on a solid surface
  • Contact angle using a gas bubble beneath a solid surface in a liquid
  • Surface tension using the curvature of a perfectly symmetrical drop on a circular sample pedestal
  • Roll-off behavior and advancing/receding contact angle of a drop on a tilted surface

MEASURING RESULTS

  • Static contact angle
  • Contact angle using a bubble in a liquid
  • Temperature

INSTRUMENT DIMENSIONS

Footprint 610 mm × 250 mm (W × D)
Height 610 mm
Weight (without accessories) 10 kg

TEMPERATURE MEASUREMENT

Range of temperature measurement -50 to 400 °C
Resolution 0.1 °C
Precision 0.1 °C
Accuracy 1/3 DIN B (±0.1 °C at 0 °C to ±0.8 °C at 400 °C)
Location of temperature measurement sample stage
chamber
cuvette
External sensor 2 connectors (PT100)

POWER SUPPLY

Voltage 88 to 264 VAC
Power consumption 100 W
Frequency 50 to 60 Hz

SAMPLE DIMENSIONS

Maximum sample size 320 mm × ∞ × 275 mm (W × D × H) (without axes)
Maximum measuring surface –

ENVIRONMENT

Operating temperature 10 to 40 °C
Humidity without condensation

TEMPERATURE CONTROL

Equipment temperature-controlled sample stage
chambers
cuvette
Type of temperature control liquid
electrical
Peltier
Range of temperature control -30 (with Tempering Chamber – TC40) to 400 °C (with Tempering Chamber – TC21)
Maximum sample space 132 mm × 132 mm × 27 mm (W × D × H) (with Tempering Chamber – TC11)
Resolution 0.1 K
Flow-through thermostat with liquid
Inert gas yes

INTERFACES

PC USB 3.0

HOUSING AND PERIPHERALS

Compartment –
Needle protection shield no
Camera und optics housing –
Control keyboard PC keyboard for ADVANCE software operation available (KB20)
Levelling yes

SOFTWARE

Software type ADVANCE
Available software modules contact angle
surface free energy of solids
interfacial and surface tension of liquids
Adhesion Analysis
Remote Control API

SURFACE FREE ENERGY OF SOLIDS

Available optional
Results surface free energy (SFE)
Models equation of state
Zisman
Fowkes
Wu
Owens-Wendt-Rabel-Kaelble
Schultz-1
extended Fowkes
acid-base theory

CAPTIVE BUBBLE

Available included
Results contact angle (CA)
Range 0 to 180° (software-based)
Resolution 0.01° (software-based)
Accuracy 0.1° (instrument-based)
Models conic section
polynom
circle
Young-Laplace
height-width
Type advancing
receding
static
dynamic
tilting
(additional accessories may be required)

SESSILE DROP

Available included
Results contact angle (CA)
Range 0 to 180° (software-based)
Resolution 0.01° (software-based)
Accuracy 0.1° (instrument-based)
Models conic section
polynom
circle
Young-Laplace
height-width
Type advancing
receding
static
dynamic
tilting
(additional accessories may be required)

PENDANT DROP/RISING DROP

Available optional
Results interfacial tension (IFT)/surface tension (SFT)
Range 0.01 to 2000 mN/m (software-based)
Resolution 0.01 mN/m (software-based)
Models Young-Laplace
Types (Pendant drop/Rising drop) static, dynamic

CAMERA SYSTEM (STANDARD)

Type Camera CF04
Connection USB 3.0
Resolution 1920 × 1200 px
Frame rate 2300 fps
Dark noise 7 electrons
Dynamic range 73 dB

ILLUMINATION

Type high power monochromatic LED
Wave length, dominant 470 nm
Field of light Ø 42 mm

OPTICS (STANDARD)

Focus manual
Zoom 6.5× zoom, manual
View angle ±3°
Field of view CF04: 3.2 mm × 3.2 mm to 18.5 mm × 18.5 mm
Resolution of optics CF04: 2.5 to 16.2 μm

CAMERA SYSTEM (OPTIONAL)

Type High Speed Camera CF06
Connection USB 3.0
Resolution 640 × 480 px
Frame rate 3400 fps
Dark noise 10.5 electrons
Dynamic range 56.6 dB

DOSING SYSTEM

Dosing manual
Drop deposition manual
Cartridge/syringe (volume) glass (500 μL), disposable (1 mL)
Resolution –
Speed –

STAGES

Control x-axis: no (manual or software-controlled optional available)
y-axis: no (manual or software-controlled optional available)
z-axis: manual
Range –
Length x-axis: –
y-axis: –
z-axis: 45 mm
Resolution x-axis: –
y-axis: –
z-axis: 16 mm/turn
Accuracy x-axis: –
y-axis: –
z-axis: –

OPTICS (OPTIONAL)

Focus manual
Zoom 6.5× zoom, manual
View angle ±3°
Field of view CF06: 1.4 mm × 1 mm to 8.1 mm × 6 mm
Resolution of optics CF06: 2.1 to 13.3 μm

DOUBLE PRESSURE DOSING SYSTEM (OPTIONAL)

Drop deposition software-controlled
Cartridge, volume disposable (1 mL)
Resolution 0.1 μL
Speed fixed

TILTING (OPTIONAL)

Types internal tilting table
Control software-controlled
Range 0 to 90°
Resolution 0.01°
Accuracy 0.3°

DOUBLE PRESSURE DOSING SYSTEM

Drop deposition –
Cartridge, volume –
Resolution –
Speed –

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