Overview
NIRUN SMJ-1 Coal Water Slurry Apparent Viscosity-Tester is a precision measuring instrument using a 16-bit microcomputer processor and a digital LCD display. It has a high subdivision drive stepper motor to ensure smooth and accurate speed, and integrates an RTD temperature probe to monitor the sample temperature in real time with an accuracy of 0.1 ° C. The instrument is programmed and easy to operate. The screen can visually display viscosity, shear rate, shear stress, speed, temperature, torque percentage, rotor number and the maximum measurable viscosity under current conditions. It supports RS232 interface for printing and computer communication, and realizes data collection and program control.
Features
Adopt 16-bit microcomputer processor and stepper motor high-subdivision drive to ensure smooth and accurate speed.
2. Digital LCD screen with blue backlight, display comprehensive information, including viscosity, shear rate, shear stress, speed, temperature, percentile torque, rotor number and maximum measurable viscosity value.
3. Programmatic design, clear key marking, easy to operate.
4. With measurement range warning function, when the torque is lower than 10% or higher than 90%, an alarm will be issued.
5. Integrated RTD temperature probe, real-time monitoring and measurement of temperature, accuracy 0.1 ℃, measurement range 0 ℃ -120 ℃.
6. Support RS232 interface printing, and the printing interval can be customized by users.
7. Provide two-way RS232 interface, can communicate with the computer, realize program control and data collection.
8. Optional DV program-controlled offline download software to achieve automation and personalized operation; or optional rheological characteristic software for data collection, analysis, preservation and historical comparison.
9. The main control board and driver board use patch technology, and the circuit design is based on a professional microcomputer processor, resulting in a compact structure.
10. The instrument is corrected by PC interface for full scale and Linearity Measurement, and the performance reaches the professional level.
Principle
The instrument controls the stepper motor through the microcomputer processor to drive the rotor to swirl/spin in the sample at a set speed. The Tack resistance of the rotor swirl/spin will generate torque. The instrument measures this torque through the Sensor, and combines the rotor specification and speed to calculate the apparent viscosity, shear stress and shear rate of the sample according to the relevant hydrodynamic principles. At the same time, the RTD temperature probe monitors the sample temperature in real time to ensure stable measurement conditions. All data are displayed directly on the LCD screen after processing.
Applications
Apparent viscosity measurement of coal water slurry
Standards
GB/T188564-2002
Steps
1. Install and select the appropriate rotor.
2. Place the sample in the measurement vessel, ensuring that the rotor is immersed to the appropriate depth.
3. Set the desired rotational speed or shear rate through the instrument buttons.
4. Start the measurement, the instrument automatically drives the rotor swirl/spin and starts collecting data.
5. Observe the real-time data displayed on the screen (such as viscosity, temperature, torque percentage, etc.).
6. After the measurement is completed, the data can be saved, or the printer or computer can be connected through the RS232 interface for data output and analysis.
Notice
* Make sure the rotor is firmly installed before measurement and choose a rotor that matches the sample viscosity range.
* Sample temperature should be controlled within the material temperature range (5 ℃~ 75 ℃) to ensure measurement accuracy.
* Pay attention to the torque warning of the instrument, when the percentile torque is less than 10% or higher than 90%, the measurement result may not be reliable, and the rotor or speed needs to be adjusted.
When using the RTD temperature probe, ensure that it is in sufficient contact with the sample to obtain an accurate temperature reading.
When connecting to a computer or printer, make sure that the RS232 interface connection is stable.
The instrument should be placed on a stable workbench to avoid vibration interference.
* Measurement calibration is performed regularly through the PC interface to ensure measurement accuracy.
