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GD-6541A
GOLD
ASTM D971 Automatic Interfacial Tension Tester by Platinum Ring Method
Main structure and parts
1. Large LCD screen
2. Sample cup: to hold sample to be measured;
3. Fine adjustment for zero point
4. Fine adjustment for full scale
5. Ring rod 6. Platinum ring 7. Sample support;
8. Blank buttons 9. Background light button
10. Instrument foot: to level the instrument;
11. Printer and computer port 12. Fuse box with fuse of 1A
13. Power switch 14. Power supply socket
Working principle of Surface Tension Tester
The working principle of the instrument is described as follows: It applies the high frequency induction, tiny displacement self-balance measurement system to the torque balance. When the force applied to the platinum ring changes, the balance rod connected to the platinum ring will appear displacement between two eddy current probes. Then the inductance values of two eddy current probes change. The differential transformer will lose its balance and the input signal of differential transformer amplifier in the circuit will lose its balance, too. It will send a group of electric signal, which will change with the force applied to the platinum ring, after magnification by the amplifier. The electric signal will be sent to microcomputer for process and be used to calculate the real interfacial tension of the measured sample as per GB/T6541.
Main technical specification and parameters of Surface Tension
1. Display method: It has a large LCD screen with background light and prompt menu. The menu contains all test procedures and calculation methods stipulated in the GB/T6541.
2. Buttons: Blank buttons;
3. Measurement range:
(1) For insulating oil: 2～100 mN/m;
(2) For other petroleum products: 2～200 mN/m;
4. Sensitivity: 0.1 mN/m;
5. Accuracy: 0.1 mN/m;
6. Resolution: 0.1 mN/m;
7. Repeatability: 0.3%;
8. Ambient temperature: 10℃～30℃;
9. Relative humidity: 20%～75%;
10. Power supply: AC 220V±5%, 50 Hz;
11. Rated power: not more than 100 W;
12. Size: 185 mm×260 mm×360 mm
13. Weight: 15 kg;
ASTM D971 Automatic Interfacial Tension Tester by Platinum Ring Method
Main structure and parts
1. Large LCD screen
2. Sample cup: to hold sample to be measured;
3. Fine adjustment for zero point
4. Fine adjustment for full scale
5. Ring rod 6. Platinum ring 7. Sample support;
8. Blank buttons 9. Background light button
10. Instrument foot: to level the instrument;
11. Printer and computer port 12. Fuse box with fuse of 1A
13. Power switch 14. Power supply socket
Working principle of Surface Tension Tester
The working principle of the instrument is described as follows: It applies the high frequency induction, tiny displacement self-balance measurement system to the torque balance. When the force applied to the platinum ring changes, the balance rod connected to the platinum ring will appear displacement between two eddy current probes. Then the inductance values of two eddy current probes change. The differential transformer will lose its balance and the input signal of differential transformer amplifier in the circuit will lose its balance, too. It will send a group of electric signal, which will change with the force applied to the platinum ring, after magnification by the amplifier. The electric signal will be sent to microcomputer for process and be used to calculate the real interfacial tension of the measured sample as per GB/T6541.
Main technical specification and parameters of Surface Tension
1. Display method: It has a large LCD screen with background light and prompt menu. The menu contains all test procedures and calculation methods stipulated in the GB/T6541.
2. Buttons: Blank buttons;
3. Measurement range:
(1) For insulating oil: 2～100 mN/m;
(2) For other petroleum products: 2～200 mN/m;
4. Sensitivity: 0.1 mN/m;
5. Accuracy: 0.1 mN/m;
6. Resolution: 0.1 mN/m;
7. Repeatability: 0.3%;
8. Ambient temperature: 10℃～30℃;
9. Relative humidity: 20%～75%;
10. Power supply: AC 220V±5%, 50 Hz;
11. Rated power: not more than 100 W;
12. Size: 185 mm×260 mm×360 mm
13. Weight: 15 kg;
