Overview
NDJ-8T digital rotational viscometer is a viscosity measurement instrument that integrates touch screen technology and is easy to operate. It uses a 5-inch large color touch screen and a built-in Linux system to quickly, accurately and conveniently determine the absolute viscosity of Newtonian liquids or the apparent viscosity of non-Newtonian liquids. The instrument has the advantages of multiple measurement parameters, rich display content, high accuracy, stable speed, and supports self-built 30 sets of test procedures, which can completely replace imported instruments of the same type.
Features
1. Adopt ARM technology, built-in Linux system, simple and clear operation interface, support test program creation and data analytics.
2. The viscosity measurement is accurate, each range is automatically calibrated by computer, with high accuracy and small error.
3. The display content is rich, including viscosity, temperature, shear rate, shear stress, measurement value percentage graphic display, range overflow alarm, automatic scanning, maximum Measurement range, date, time, etc., and can display kinematic viscosity.
4. Fully functional, supports timing measurement, self-built 30 sets of test programs, access to 30 sets of measurement data, real-time display of viscosity Linear dispersion, print data and Linear dispersion.
5. Front level, level adjustment is intuitive and convenient.
6. Optional temperature probe, constant temperature bath, thermostatic cup, printer, standard viscosity sample and other accessories.
7. Support Chinese and English operating systems.
Principle
The NDJ-8T digital rotational viscometer drives a rotor to swirl/spin in a liquid at a constant speed through a motor. When the rotor swirls/spins in the sample, it experiences viscous resistance, which is proportional to the viscosity of the liquid. The instrument finally displays the viscosity value of the liquid on the screen by measuring this resistance and performing internal calculations. It can determine the absolute viscosity of Newtonian liquids or the apparent viscosity of non-Newtonian liquids.
Applications
Paints, Coatings, Cosmetics, inks, Pulp, Food, Oil, Starch, Solvent Adhesive, Latex, Biochemical, Asphalt, Paraffin, Hot-melt adhesive
Steps
1. Place the instrument on a stable table and adjust it to a horizontal state through the front level.
2. According to the estimated viscosity, select the appropriate rotor and speed combination through the automatic scanning function or manually.
3. Install the selected rotor to the instrument connector.
Pour the sample into a measurement container with a capacity of 300 to 400 ml.
5. Immerse the rotor into the sample at the specified mark.
6. Start the measurement program on the touch screen, the instrument starts swirling/spinning and measurement.
7. After the measurement is completed, the screen displays viscosity and related parameters (such as temperature, shear rate, etc.).
8. You can choose to save the measurement data (up to 30 sets) or print the data and Linear dispersion through the printer interface.
Notice
Make sure the instrument is placed horizontally before use.
* Select the appropriate rotor and speed combination according to the estimated viscosity of the sample to avoid range overflow.
Be careful when installing and removing the rotor.
Make sure the rotor is fully immersed in the sample to the specified mark.
* When measuring high viscosity samples, wait for the reading to stabilize before recording.
* The instrument supports wide voltage operation, but please confirm that the local Power supply voltage matches the instrument requirements.
Optional thermostatic components (e.g. Thermostatic bath) need to be properly connected and used to ensure accurate temperature control.
* Use suitable solvents when cleaning rotors and measurement containers to avoid damage.
When not in use for a long time, please keep the instruments and accessories properly.
