(189i) Agitator Impact on the Net Weight Signal of a Loss-in-Weight Feeder Operating at Low Mass Flow Rates
- Conference: AIChE Annual Meeting
- Year: 2019
- Proceeding: 2019 AIChE Annual Meeting
- Group: Pharmaceutical Discovery, Development and Manufacturing Forum
- Time: Monday, November 11, 2019 - 3:30pm-5:00pm
In this work, the impact of agitator movement on the net weight signal during loss-in-weight feeding is studied. Specifically, the position of the agitator is monitored in real time to observe the impact of agitator motion on the net weight loss signal at low mass flow rates. It is identified that the agitator has a significant impact on the net weight signal. The frequency of the agitator speed co-varies with the frequency in the change of the net weight loss signal. The operating net weight of the feeder is a key factor determining the magnitude of variation in the changing net weight signal. This study provides direction for improving the net weight mass loss signal and reducing potential impact to mass flow feed rate variation at low mass flow rates by optimizing the operating net weight range of the feeder. Directions are also provided on modified agitator configurations for the raw material being fed and material mass flow rate requirements.
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