The technical principle of the FBT600 series dynamic bubble pressure tensiometer is to place the measured liquid in a sample container and immerse a specially designed capillary tube into the liquid, which is connected to a sensitive pressure sensor. During the testing process, gas or inert gas passes through the capillary and forms bubbles at the end of the capillary, and the pressure of these bubbles is measured. When the FBT600 series dynamic bubble pressure tensiometer continuously increases the rheological rate of gas, the frequency of bubble formation increases and the survival time of each bubble decreases accordingly. It can automatically scan the number of bubbles and tension curve, and can also measure the tension value of a specified number of bubbles individually. 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 at which bubbles are generated is directly proportional to the dynamic surface tension. The hydrostatic pressure P is directly proportional to the immersion depth of the capillary tube.
Technical principle of FBT600 series dynamic bubble pressure tensiometer
Place the tested liquid into the sample container and immerse a specially designed capillary tube into the liquid, which is connected to a sensitive pressure sensor. During the testing process, gas or inert gas passes through the capillary and forms bubbles at the end of the capillary, and the pressure of these bubbles is measured. When the FBT600 series dynamic bubble pressure tensiometer continuously increases the rheological rate of gas, the frequency of bubble formation increases and the survival time of each bubble decreases accordingly. It can automatically scan the number of bubbles and tension curve, and can also measure the tension value of a specified number of bubbles individually. 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 at which bubbles are generated is directly proportional to the dynamic surface tension. The hydrostatic pressure P is directly proportional to the immersion depth of the capillary tube.

Characteristics of FBT600 series dynamic bubble pressure tensiometer
1. Accurate measurement of the lifespan of bubbles directly
2. Accurate measurement of dynamic surface tension
3. Curve of surface tension versus time
4. The time interval for bubble scanning can be adjusted
5. Test the difference between bubbles and atmospheric pressure
6. Equipped with software data calibration function
FBT600 series dynamic bubble pressure tensiometer standard components
1. FBT600 series bubble tensiometer host 1 unit
2. 2 capillary tubes
3. 1 USB extension cable
4. 2 crystallization dishes
5. 1 copy of application software
6. 1 copy of instruction manual
7. 1 electronic version of the operation manual
FBT600 Series Dynamic Bubble Pressure Tensioner System Parameters
| Surface tension measurement range | 10 - 150 mN/m |
| resolution | ± 0.01 mN/m |
| Surface tension measurement accuracy | ≤ 0.5% |
| dynamic range | 0.015-16 seconds |
| Minimum liquid test sample size | 10 ml |
| Operating temperature range | Room temperature (10-50 ° C optional) |
| Measuring temperature range | Room temperature (0-100 ° C optional) |
| Test time: Standard mode (M1)/Fast mode (M4) | 20-30 min / 4-6 min |
| software environment | Windows 7, Windows 10, Windows 11, Office 2010 engine libraries |
| data connection | USB2.0-3.0 |
| Size (LxWxH) | 200 x 250 x 400 mm |
| weight | 10kg |
| power supply | 12 VDC |
| external power supply | 100 -240 AC |
| Maximum Power Consumption | 30 W |
| accessories | Various sizes of capillary tubes |