Fluid temperature control in rotational rheometers with plate-plate measuring systems
This study analyses the temperature differences between a top plate, a bottom Peltier and a fluid sample in a rotational rheometer during oscillation tests. The results show that the steady state temperature difference between the fluid and the Peltier plate is of the order of several degrees centigrade when using high temperatures, and the lack of control gets even worse during rapid transient heating tests.
Aiming at the requirements in running efficiently and high accuracy handling data timely,the login system,communication module,database storage and reading,relay verification module,report generation and printing.were designed.The working principle and composition of the calibration device were introduced.The upper computer software of microprocessor relay protection's trippingoperation-board intelligent calibration device was developed based on graphical LabVIEW language and database programming technology to realize the function of each part.The results indicate that the software can complete returning the relay operating board calibration value and action value efficiently,and has a multi-function interface.The software has been successfully applied in this device.