Color feeder calibration
Vol.19 #3, Nov. 1992
Plan ahead so the additive feeders can be easily and accurately calibrated by line operators. Make sure it will be easy for operators to collect samples. Provide a simple system for weighing, recording, and calculating additive percentages.
On high output systems, sample weights become very large at short sampling times. At short sample times, two problems occur:
1.) 1/2 second can cause a 1 5 % error (use a stopwatch).
2.) Feeder characteristics are different at stop and start. (Catch the sample during the continuous feeding cycle.) Additives are expensive. Better monitoring will lower costs and improve quality.
See also
Calibrate tachs
Color changes
Data collection 1
Colored mixing drums
Extrusion trials
Seed counter