SL 150 optical dynamic/static contact angle meter

SL150B

SL150S

Subject

Basic type

Standard type

Hardware specifications

Sample stage control

X-Axis

N.A.

Manual, travel range: 50mm, accuracy: 0.01mm; Max. travel range: 150mm for option

Y-Axis

Z-Axis

Manual, travel range: 40mm; accuracy: 0.01mm

Levelness Adjustment

Levelness adjustment of sample stage used manual fine tuning knob, whole instrument levelness adjustment and camera lens tilting unit

Sample Stage Size

50*50mm

Max Samples Size

150(W)*∞(L)*50(H)mm

Max Sample Weight

6.0 kg

Other control

Dosing control

X,Y-Axis movable, travel range: 12.5mm; accuracy: 0.01mm

for adjusting the droplet position and focal distance

Dosing Control(Z)

Manual,

travel range: 12.5mm, accuracy: 0.01mm;

For drop transferring

Tilting of Camera Lens

One-dimensional tilting unit with micrometer and locking function

Anti-dazzling

Anti-dazzling plate for option

Accessories

Optional:

Special holders for fiber, films and leaf that are used to analyze contact angles of fiber or samples with poor planeness surface.

Dosing system

Model

Manual direct syringe pump

Accuracy

0.01mm, 0.02uL

Drop Transferring Method

Manually-controlled

Needle

Disposable needles, including 0.24, 0.3, 0.5, 0.9,2mm OD stainless steel needles, 0.2 OD needles as well as PTFE needles, etc., especially for measuring contact angles of super-hydrophobic materials or contact angles between glue and solid materials.

Optical vision system

Lens

0.8-fold zoom telecentric lens ( 0.8X magnification), NA:0.01,TV Distortion:0.08%

Camera

Industrial mono video camera, USB 2.0 port, Resolution: 752*480 (standard WVGA format); Image speed: -87(Full Screen)-600(752*60) FPS,FOV:1.33-17.14mm; UV filter

Cameras with higher resolutions of 130M,300M,500M are available; available option speed: 100 FPS, 1,000 FPS or higher; cameras with port GiGE, CameraLink, 1394 is optionally available.

Background light system

Illumination-adjustable monochromatic LED cold light source and frosted quartz glass soft light plate provides clearer image edge of drop

Software

√ 5 drop shape states : Pendant Drop, Sessile Drop (liquid/gas, liquid/liquid/gas), Captive Drop, Tilted Plate, and Oscillating Drop.

√ 7 methods to calculate contact angles: θ/2 (WH), circle fitting , ellipse fitting , RealDrop™ , curve ruler (tangent fitting ), Spline curve-fitting , and Young-Laplace equation fitting (ADSA™), etc.

√ Data acquisition: Combination of both full-automatic measurement and manual modification. Just press “Measure”, the software will complete whole process of capture, finding edge, finding sensitive spots, fitting curves, calculating contact angle values, and displaying calculation results without manual participation so as to reduce the effect of human factors.

√ Contact angle measuring technology: Mathematical model fitting and real-drop contour measurement solves the problem of measurement of asymmetric drop shape or drop without apex.

√ Automatic curve base line correction: Correction of upper convex sample surface, lower concave surface, or roughness of surface.

√ Dynamic/static contact angle measurement: Measuring advancing / receding /tilting/roll off angles.

√ Image capture methods: Single/continuous capture with 25 FPS. Higher speed of 60 FPS, 100 FPS, or 1,000 FPS are optional available.

√ Unique dual-software triggering technology: Measurement of first-time-point contact angle for analyzing powder, paper and other hygroscopic materials; whole-process capturing of small contact angle measurement.

√ Calculation and comparison of left and right contact angle and their average values.

√ Automatically generated data graph: Real-time observation of contact angle changes.

√ Powerful database management: One-to-one correspondence of data and drop images; backup, compression, and exporting to Excel files; measured values and curve-fitting results can all be saved into exported image, visually and clearly.

√ Video recording: Recording visual images in AVI format and also for PPT file.

√ Evaluation models for surface free energy

Exclusively providing 12 methods for calculating surface free energy, e.g. Equation of State (Neumann et al.), Good-Girifalco, Owen-Wendt-Rabel, Simple Fowkes, Extended Fowkes, WU method 1-2, Schultz method 1-2, Acid-base (Van OSS & Good), Jhu, and Zizman Plot (critical surface tension) method, for measurement of surface free energy and its distribution (dispersive force, polar force and hydrogen bond value, and Lewis acid-base, etc.) of low/high free energy solid.

√ Wetting behavior analysis (WBA -Wetting Envelopes)

√ Automatic calculation of droplet volume,adhesive work and Equation of state based surface free energy for measurement of surface tension of films, to replace Dyne test pens.

General Specifications

Measuring Range of Contact Angles

0°<θ<180°

Resolution

0.01°

Accuracy

±1° (θ/2 method) ±0.1° circle fitting method

Measuring Range of Interface Tension

0.001-2000mN/m

Resolution

0.001mN/m

Methods of Interface Tension

BA table (select plane), 4th Young-Laplace equation fitting

Dimension and Weight

150Wx535Lx400Hmm 8kg

Power Supply

AC100~240V 50/60HZ