JBT07A Fully Automatic Bubble Tension Measuring Instrument

Place the tested liquid in a constant temperature sample container, and a capillary tube made of glass or polytetrafluoroethylene will be immersed into the liquid at a given depth. This capillary tube is connected to a gas interface and a sensitive pressure sensor. During the testing process, gas or inert gas passes through the capillary tube, forming bubbles at the end of the capillary tube and measuring the pressure of these bubbles.

When the bubble pressure tension meter JBT07 continuously increases the rheological rate of gas, the frequency of bubble formation increases and the survival time of each bubble decreases accordingly. Set the bubble speed and frequency during the experiment. When the bubble radius at the end of the capillary is equal to the capillary radius, the bubble pressure reaches its maximum value. Once the bubble radius exceeds the capillary radius, the bubble pressure significantly decreases. The maximum pressure of bubbles generated by the fully automatic bubble tension measuring instrument is directly proportional to the dynamic surface tension. The hydrostatic pressure P is directly proportional to the immersion depth of the capillary tube.

System parameters of fully automatic bubble tension measuring instrument:

1. Measurement range: 10-100 mN/m, measurement accuracy: 0.1 mN/m

2. Bubble frequency range: (depending on the liquid and capillary used): 0.05-30 Hz

3. Liquid level control: liquid level position control

4. Bubble lifespan: (depending on the liquid and capillary used): 5 ms -50 sec

5. Number of bubbles collection: 1-20 bubbles per second

6. Temperature range: room temperature or -5 ° C-95 ° C (requires an external constant temperature water bath)

7. Temperature resolution: ± 0.1 ° C