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Contact Angle Meter - DMo-series

DMo-series-1

DMo-501: manual droplet deposition

DMo-series-2

DMo-601: automatic droplet deposition

DMo-series-3

DMo-701: automatic droplet deposition and stage with automatic x-axis

DMo-series-4

DMo-601: with optional multi manual dispenser

DMo-series-5

DMo-701: with optional multi automatic dispenser

  • DMo-series-1
  • DMo-series-2
  • DMo-series-3
  • DMo-series-4
  • DMo-series-5
The four models of the DMo-series are high-performance contact angle meters, only differing in their grade of automation. The high-speed camera and computer controlled dispenser allow for precise measurements of static and dynamic contact angles, surface and interfacial tension of liquids as well as analysis of surface free energy of solids.
A wide range of options are available and lower grade models can also be upgraded later.
Find your local contact for details and
product inquiries here  Where To Buy 

 

           

 

Each model combines the following features

  • Fast image capturing system with standard 125 fps at 640x480 resolution USB 3.0 camera, max. 333fps at 640x136 resolution
  • Automatic single dispenser system
  • 150x150mm wide sample stage with a maximum load capacity (temperature chamber + sample) of 1.4kgs
  • Stage travel distance: x-axis: 150mm, y-axis: 75mm, z-axis: fixed
  • Focusing aid with displayed index graph and value and brightness adjustment to achieve perfect focus
  • Movie converter to convert data images to MPEG-1 or AVI movie format
  • Determination of contact angles, droplet volume, residual droplet volume, sessile drop volume, height and radius of sessile drop
  • Measured results are displayed in a spreadsheet for easy reference and comparison, and saved in csv format for easy export to and manipulation in MS Excel
  • User-specified analysis report function, providing measurement results and parameters
  • Droplet calibration standard for standard view, bearing one full circle for calibration and three droplet silhouettes of 5°, 60° and 108° for periodic inspection of measurement accuracy
 

The following table describes the differences between the measuring process of each model

following
 
DMo-model

Positioning of  first measurement 

Generation

of droplet

Deposition of droplet (control/recognition)

Analysis of droplet

Positioning of next measurement Full-scale continuous measurements
501 by rotary knob ▲ / ●
601 by rotary knob ● / ●
701 by command button ● / ●
901 ● / ●
 ▲ manual ● automatic
 
Features Options Applications Specifications Downloads
 
  • Automatic recognition of drop deposition by FAMAS analysis software 
  • Live image display and droplet volume monitoring
  • Movie converter
  • Manual dispenser with a set of 5 glass syringes and 5 SUS needles for precise adjustment of droplet volume and quick refilling and replacement of liquid samples
  • Fine adjustable stage in x- and y-axis for exact positioning
  • Adjustable level of the body and stage
  • Droplet calibration standard for standard view, bearing one full circle for calibration and three droplet silhouettes of 5°, 60° and 108° for periodic inspection of measurement accuracy
 
Features Options Applications Specifications Downloads
 

Hardware

  • Jacket and heater type chambers for temperature measurements from +10 to +380°C (except 901)
  • Heater type dispenser for temperature measurements from ambient to +380°C
  • Tilting stage for measurements of roll-off angles, incl. FAMAS software add-in [Sliding method] (except 901)
  • Add-on module [Dynamic sliding method] for measurement of roll-off speed and roll-off acceleration. Only in combination with tilting stage package (except 901)
  • Multi manual dispenser holder
  • Multi automatic dispenser system
  • Large capacity pump dispenser, incl. a 50ml liquid container
  • Surface free energy kit
  • Pendant drop kit (for standard & wide view)
  • Kit for captive-bubble-measurements
  • Droplet calibration standard (for wide 1 view)
  • Pendant drop calibration standard (for standard view)
  • Pendant drop calibration standard (for wide 1 and wide 2 view)
 
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Features Options Applications Specifications Downloads
 
  • Determination of wettability of surfaces like glass, metal, plastics, ceramics at ambient temperature
  • Surface cleanliness
  • Determination of surface and interfacial tension using the Pendant drop kit (standard and wide view)
  • Analysis of Surface free energy of solids
  • Determination of dynamic contact angles (advancing/receding angles and roll-off angle)
  • Coating property, Repellency, Characterization of droplet hysteresis
  • Initial spreading, absorbing property, effect of surface active agents
  • Adhesive property, characterizing surface modification, digitalization of hydrophilicity/hydrophobicity
 
Features Options Applications Specifications Downloads
 
DMo-901 DMo-701 DMo-601 DMo-501
Camera system

USB 3.0 CCD camera with: 

          

          

125fps at 640x480 pixels
200fps at 640x278 pixels
333fps at 640x136 pixels
Optical system

focus:

field of view: 

manual focus with 3 step manual zoom
6.6x4.9mm, 12.0x9.0mm, 17.3x13.0mm ±5%
Measuring methods

contact angle:

            1

surface/interfacial tension: 

surface free energy of solids:

sessile drop (static), advancing/receding angle (dynamic)
sliding angle (dynamic) 1)
pendant drop (static and dynamic)
sessile drop (static)
Analysis methods

contact angle: 

surface/interfacial tension: 

surface free energy of solids: 

θ/2, tangent, curve fitting (ellipse, circle)
Young-Laplace, ds/de
Owens-Wendt, Kaelble-Uy, Kitazaki-Hata, Wu, acid-base, Zisman
Measuring range

contact angle:

surface/interfacial tension:

0.01 to 180°
0.01 to 100mN/m
Resolution

contact angle:

surface/interfacial tension:

0.01°
0.01mN/m
Accuracy 2)

contact angle:

surface/interfacial tension:

0.2°
0.2mN/m

Maximum sample surface

area and height (WxDxH)

         

150x150x16mm

         

150x150x35mm

Sample stage operation:
X-axis
Y-axis
Z-axis
Rotation axis

         

150mm (automatic)
75mm (automatic)
---
360° (automatic)

         

150mm (automatic)
75mm (manual)
---
---

         

150mm (manual)
75mm (manual)
---
---

Dispenser operation:
Z-axis (droplet deposition)
Droplet generation

Droplet resolution

         

16mm (automatic)
automatic
0.1μl

         

35mm (automatic)
automatic
0.1μl

         

35mm (manual)
automatic
0.1μl

Dimensions (WxDxH) of:
Main instrument
Control box

         

297x544x305mm
290x240x86mm

         

288x544x305mm
260x200x70mm

Approximately weight of:
Main instrument
Control box

         

10.0kg
4.3kg

         

8.5kg

4.3kg

         

7.5kg
1.5kg

Electric power:

Voltage

Frequency

Power consumption

         

AC100-240V

50/60 Hz

60W 125VA

         

AC100-240V

50/60Hz

25W 105VA

Operating environment

temperature: +10 to +35°C, humidity: 30-80%RH (non-condensing)

positioned away from sources of electrical noise and vibration

1) An optional external tilting stage is required

2) Accuracy is the repeatability in terms of standard deviation based on manufacturer’s calibration standard

 
PAGETOP
 
Features Options Applications Specifications Downloads
 
  • Specification sheet
  • Catalog


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