Overview
The NDJ-1C-T Brinell rotational viscometer is a high temperature swirl/spin digital viscometer designed for the determination of the dynamic viscosity of substances that are solids at room temperature and melt into fluids after high temperature heating (such as hot-melt adhesives, asphalt, paraffin wax, polyethylene (PE), etc.). The instrument is recommended by Adhesive Industrial Standard Compilation for accurate, fast, intuitive and easy measurement and has been selected by customers in related industries.
Features
1. Adopt a 5-inch color touchscreen for intuitive and convenient operation.
2. Wide viscosity measurement range, up to 10~ 200000mPa · s.
3. Rotor speed multi-gear optional, including 0.5, 1, 2, 5, 10, 20, 50rpm.
4. Measurement accuracy is high, reproducibility is +/- 0.5% F.S, Measurement accuracy is +/- 1% F.S.
5. With high temperature measurement capability, Temperature range from room temperature to 250 ℃, temperature accuracy of 0.1 ℃.
6. Equipped with timing function, the measurement time can be flexibly set according to the sample situation.
7. Linear dispersion of viscosity can be displayed in real time, which is convenient for observing the viscosity change process.
8. The data storage function is powerful, which can save 30 sets of measurement results including rotor, speed, temperature, time and other information.
9. Interface, measurement data and Linear dispersion printables available.
Principle
The Viscometer works based on the Brinell swirl/spin viscosity measurement principle. The instrument drives the rotor at a constant speed swirl/spin in the sample, and the rotor is subjected to the torque caused by the sample Tack resistance. The dynamic viscosity of the sample can be calculated by measuring the torque required to maintain the uniform rotor swirl/spin, and based on the geometry and speed of the instrument.
Applications
Determination of viscosity of hot-melt adhesives, asphalt, paraffin, polyethylene (PE), etc
Standards
Adhesive viscosity determination, HG/T3660-1999T hot-melt adhesive viscosity determination, JTG E20-2011 highway engineering asphalt and asphalt mixture test procedures T0625-2011
Steps
1. Prepare the sample to ensure it is a molten fluid at the test temperature.
2. According to the estimated viscosity value, choose the appropriate rotor and speed combination.
3. Inject the sample into the sample cup to the specified capacity (15~ 25ml).
4. Install the sample cup into the Thermostatic bath of the instrument and set the target temperature.
5. After the sample temperature has stabilized, lower the rotor to immerse the sample to a specified depth.
6. Start the measurement on the touch screen, the instrument will automatically swirl/spin the rotor and start collecting data.
7. Linear dispersion of viscosity can be observed in real time during the measurement process.
8. After the measurement, raise the rotor, read and save or print the measurement results.
Notice
The instrument requires a 220V/50Hz power supply to ensure stable power supply.
* Please select the rotor and speed correctly according to the characteristics of the sample to be tested (such as viscosity range, test temperature) before use.
* The amount of injected sample should be within the specified capacity range to ensure measurement accuracy.
When operating at high temperatures, pay attention to the temperature of the sample cup and rotor to avoid burns.
* After the test is completed, the rotor and sample cup should be cleaned in time to prevent the sample residue from affecting the subsequent measurement.
The instrument is equipped with a printing interface as standard, and a separate printer is required for printing functions.
* Do not use under conditions beyond the instrument specifications (e.g. temperature, viscosity range).
* Regularly maintain and calibrate instruments to ensure Measurement accuracy.
