Material Drying
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PA6 Online Moisture Monitoring
Problem Phenomenon
The moisture content cannot be grasped in real time during the drying process, and sampling can only be tested after drying ends
Cause Analysis
Offline sampling has a lag, unqualified dried material may have already flowed into production, and sampling has limited representativeness and cannot reflect the drying uniformity of the entire batch; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
Install an online moisture meter at the drying hopper outlet for real-time monitoring, with a 0.2% alarm line set; online monitoring combined with regular Karl Fischer sampling balances real-time performance and accuracy
Key Takeaway
Online moisture monitoring moves drying quality control forward from result inspection to process control; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence
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