Sensors monitor changing viscosity
An accurate and reliable real-time measurement of the mixing viscosity has often been a missing element in the process control loop.
Rotary mixing processes in industries from bio-chemical to concrete production show significant changes in viscosity as the mixing cycle progresses.
An accurate and reliable real-time measurement of the mixing viscosity has often been a missing element in the process control loop.
Systems are produced that look at the input drive power of the motor, however these have limited accuracy and repeatability.
The Datum Rotary Power System (Torque) is modular and can be fitted to most mixer shafts or drive trains.
The data output will interface to most PLC, PC and Scada-based control or data acquisition systems.
Direct measurement of the shaft power can, however, provide a stable and accurate control input that will enable improved quality control and energy savings to be implemented.
The data from the direct shaft power measurement will provide average input power to an accuracy of 0.1% with a repeatability of 0.04%.
It will also measure the total of the energy input into the process and measure the power fluctuation during the mixing process, providing an indication of the mix consistency.
The control signals can be provided as averaged data or real-time data, or both.
The averaged data will provide a stable and accurate measurement of power to indicate the changes in the process or the stop point of a process.
The real-time data can show the small fluctuations in the data.
The standard outputs for the data are 4-20mA, 0-10V DC or USB serial data.
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