Sterlco SF Series Volumetric Additive Feeder - Manual (Page 20)

Additive Feeders Chapter 3: Installation 20 of 55
Examples:
This example shows how to extrapolate a desired feed rate of 3 lbs./hr., based on the feed
rates of 3 trial rpm settings.
Observed Feed Rates
Sample 1 = 2 pounds per hour @ 20 rpm
Sample 2 = 4 pounds per hour @ 40 rpm
Sample 3 = 6 pounds per hour @ 60 rpm
In this example, a feed rate of 3 lbs./hr. would be about 30 rpm.
0
1
2
3
4
5
6
7
0 10 20 30 40 50 60 70
8
Trial RPM settings
Calculated
feed rates
(lbs/hr)
@ the
trial RPM
1
4
2
3