SFT-A seriesInterface TensiometerTwo testing methods

1. Platinum Plate Method: Sampling period of 1-5 seconds, convenient for viscous liquids. When the platinum plate is immersed in the measured liquid, the surface tension around the platinum plate will be affected, and the surface tension of the liquid will pull the platinum plate down as much as possible. When the surface tension and other related forces of the liquid reach equilibrium with the equilibrium force, the sensing platinum plate will stop immersing into the interior of the liquid. At this point, the balance sensor of the instrument will measure the immersion depth and convert it into the surface tension value of the liquid.

2. Platinum Ring Method: Sampling period of 50-200 seconds, (1) Gently immerse the platinum ring into the liquid; (2) Slowly lift the platinum ring upwards, causing the liquid level to relatively decrease, forming a liquid column below the platinum ring and ultimately separating from it. The platinum ring test is to sense a value, which is formed when the platinum ring is about to separate from the liquid sample but not yet. The accuracy of converting this value into surface tension value depends on the viscosity of the liquid.

SFT-A1Interface TensiometerProduct parameters:

Surface/Interface Tension Test Range: 0-400mN/m

Surface/interface tension measurement accuracy: ± 0.1mN/m

Surface/interface tension display accuracy: ± 0.01mN/m

Sensor range: 0-120g

Sample stage upgrade speed: 0-10mm/Sec

Sample stage upgrade distance: 0-80mm

Sample table lifting accuracy: ± 0.1mm

Sample pool size: Φ50mm

Measurement software: SFT-A

Temperature range: room temperature

Instrument size (mm): 360 * 360 * 620

Weight: 20Kg

Basic functions of HARKE-SFT-A1 surface tension meter

Hanging Ring Method

HARKE-SFT-A1 Surface Tensioner Optional Additional Item

Electric heating

L Constant temperature circulation sleeve