Overview
Shanghai JINGTIAN RVDV-2 digital display Rotational Viscometer is a digital display Rotational Viscometer with a range of 40~ 40,000,000 mPa · s. Its LCD screen can display viscosity, shear rate, shear stress, speed, temperature, percentile torque, rotor number and the maximum viscosity value of the selected rotor at the current speed. This model is equipped with a small number of sample adapters, including one rotor each of No. 21, 27, 28, and 29. The sample volume is only 10~ 20mL, which is suitable for expensive sample testing.
Features
1. The LCD screen can display various information such as viscosity, shear rate, shear stress, speed, temperature, percentile torque, rotor number and the maximum viscosity value of the selected rotor at the current speed.
2. Wide range, 40 to 40,000,000 mPa · s.
3. Equipped with a small number of sample adapters, the sample volume is only 10~ 20mL, making it particularly suitable for testing valuable samples.
4. Thermostatic bath with external circulation function can be connected to control the temperature of the tested sample.
5. Easy to disassemble and clean.
6. Adopt continuously variable speed regulation, with a speed range of 0.1 to 200 rpm.
Principle
Measurement principle based on swirl/spin method. The motor drives the rotor to swirl/spin in the sample. Tack resistance to the rotor causes torque changes. The instrument calculates the viscosity value of the sample by measuring the torque and based on parameters such as rotor specification and speed.
Applications
It is suitable for various fields that require accurate measurement of liquid viscosity, and is especially suitable for test scenarios with small or expensive samples.
Standards
The data did not mention specific compliance criteria.
Steps
Select the appropriate rotor (e.g. R2-R7 or 21 #, 27 #, 28 #, 29 #) according to the estimated viscosity of the sample.
2. Install the selected rotor.
3. Pour 10 to 20 mL of sample into an adapter container.
4. Immerse the rotor into the sample at the specified mark.
5. Thermostatic bath (if temperature control is required).
6. Turn on the power supply and set the required speed (0.1~ 200rpm) through continuously variable transmission.
7. After the display is stable, read the viscosity and Miscellaneous parameters displayed on the LCD screen.
8. After the test is completed, remove the rotor and clean it.
Notice
* Please select the appropriate rotor and speed combination according to the estimated viscosity range to ensure measurement accuracy.
When using a small sample adapter, ensure that the sample volume is between 10 and 20 milliliters.
* When connecting the Thermostatic bath, make sure it has external circulation function for effective temperature control.
Rotor immersion depth should be accurate, usually based on the marking on the rotor rod.
The instrument should use a dedicated power adapter (input 100~ 240V, 50~ 60Hz).
* Before and after measurement and when changing the sample, be sure to thoroughly clean the rotor and sample container.
The instrument should be placed on a stable working surface for operation.
