Theta Flex and Theta Lite systems come in readymade packages optimized for different automation level needs. Other packages can also be formed easily thanks to the modular design.
Dispenser |
Droplet placement |
Sample stage |
Camera |
Possible upgrades |
|
Theta Flex Auto 5 |
Auto, 4 liquids | Auto | Auto XYZ | 1984 × 1264 px, max 3009 FPS | Full |
Theta Flex Auto 4 |
Auto, 2 liquids | Auto | Auto XYZ | 1984 × 1264 px, max 3009 FPS | Full |
Theta Flex Auto 3 |
Auto, 1 liquid | Auto | Auto XYZ | 1984 × 1264 px, max 3009 FPS | Full |
Theta Flex Auto 2 |
Auto, 2 liquids | Auto | Auto X, Manual YZ | 1984 × 1264 px, max 3009 FPS | Full |
Theta Flex Auto 1 |
Auto, 1 liquid | Auto | Manual XYZ | 1984 × 1264 px, max 3009 FPS | Full |
Theta Flex Plus |
Auto, 1 liquid | Manual | Manual XYZ | 1984 × 1264 px, max 3009 FPS | Full |
Theta Flex Basic |
Manual | Manual | Manual XYZ | 1984 × 1264 px, max 3009 FPS | Full |
Theta Lite Auto 2 |
Auto, 2 liquids | Manual | Manual YZ | 1280 x 1024 px, max 2068 FPS | Limited |
Theta Lite Auto 1 |
Auto, 1 liquid | Manual | Manual YZ | 1280 x 1024 px, max 2068 FPS | Limited |
Theta Lite Basic |
Manual | Manual | Manual YZ |
1280 x 1024 px, max 2068 FPS |
Limited |
Comparison chart of the technical specifications of the Attension Theta contact angle meters product range.
Theta Flex |
Theta Lite |
|
Available Measurements |
||
Static contact angle |
√ | √ |
Dynamic contact angle |
Automatic | Manual |
Surface/Interfacial tension |
√ | √ |
3D surface roughness |
√ | – |
Interfacial rheology |
√ | – |
Surface free energy |
Zisman Plot, |
|
Available Measurement Methods |
||
Sessile drop |
√ | √ |
Batch sessile drop |
√ | √ |
Captive bubble |
√ | √ |
Pendant drop |
√ | √ |
Reverse pendant drop |
√ | √ |
Meniscus |
√ | √ |
Dynamic contact angle |
Automatic | Manual |
Pulsating drop |
√ | – |
3D Topography |
√ | – |
Hardware |
||
Measuring range (°, mN/m) |
0…180, 0.01…2000 | 0…180, 0.01…2000 |
Accuracy (°, mN/m) |
±0.1, ±0.01 | ±0.1, ±0.01 |
Maximum sample size (mm) |
Unlimited×100×320 (with stage) | Unlimited×45×200 (with stage) |
Integrated sample holders |
Yes | Yes |
Frame interval |
0.33 ms ... 1000 s | 0.48 ms ... 1000 s |
Maximum resolution (px) |
1984×1264 | 1280×1024 |
Maximum measuring speed (fps) |
3009 | 2068 |
Camera |
USB 3.0 digital camera with zoom | USB 3.0 digital camera |
Camera protection |
Inside instrument covers | Inside instrument covers |
Camera view angle (°) |
-4.5 ... 2.5 | -2 ... 2 |
Light source and size |
||
Field of view (Ø, mm) |
1.44…32.3 | 2.9…12 |
Measurement indicator LED |
Yes | No |
Disposable tip dispensing |
√ | √ |
Dimensions — Basic frame (L×W×H, mm) |
765 x 230 x 435 | 495 x 130 x 310 |
Weight — Basic frame (kg) |
26 | 5 |
Power supply (VAC) |
90…264 | 100…240 |
Frequency (Hz) |
47 ... 440 | 50 ... 60 |