I'll get to the actual question shortly, the background first.
I've been doing some tests [ I have the time ] with various beam scales, and so far, even the oldest one I have, a Pacific, registers measurable deflection of one granule of extruded rifle powder. This oldest one also passes the repeatability test, repeatedly removing and replacing the pan and observing zero.
To be clear, I use a webcam positioned in front of the beam pointer, viewed on a 20-something inch LCD panel. Big magnification, no parallax, easy to observe the slightest deflection.
The cheapest one I have, a Lee, gives the biggest observable deflection by one granule of extruded rifle powder.
I've determined to my satisfaction, using any one of the scales I've tested so far, that I can dispense a powder charge consistently to within one granule.
It is possible to use reference weights to the required charge weight, and zero the beam scale, so you are certain the powder weight is right.
It's generally accepted that en electronic setup is more desirable as it is superior to a beam scale setup, in that it is more accurate to a higher number of decimal places, and is associated with "precision powder dispensing".
So the question :
How does a $1000 + electronic setup, that can detect 1/100th of a grain, dispense a powder charge more accurately and more consistently to less than the weight of one granule of powder , if it only dispenses whole granules ?
I've been doing some tests [ I have the time ] with various beam scales, and so far, even the oldest one I have, a Pacific, registers measurable deflection of one granule of extruded rifle powder. This oldest one also passes the repeatability test, repeatedly removing and replacing the pan and observing zero.
To be clear, I use a webcam positioned in front of the beam pointer, viewed on a 20-something inch LCD panel. Big magnification, no parallax, easy to observe the slightest deflection.
The cheapest one I have, a Lee, gives the biggest observable deflection by one granule of extruded rifle powder.
I've determined to my satisfaction, using any one of the scales I've tested so far, that I can dispense a powder charge consistently to within one granule.
It is possible to use reference weights to the required charge weight, and zero the beam scale, so you are certain the powder weight is right.
It's generally accepted that en electronic setup is more desirable as it is superior to a beam scale setup, in that it is more accurate to a higher number of decimal places, and is associated with "precision powder dispensing".
So the question :
How does a $1000 + electronic setup, that can detect 1/100th of a grain, dispense a powder charge more accurately and more consistently to less than the weight of one granule of powder , if it only dispenses whole granules ?