Jim Watson
Member
The compressors kicking on were sending RF powerful enough to interrupt the sensor
My PACT will go nuts if the Dillon case feeder is running. Vibration or voltage, I don't know.
The compressors kicking on were sending RF powerful enough to interrupt the sensor
Probably both.My PACT will go nuts if the Dillon case feeder is running. Vibration or voltage, I don't know.
Hmmmmm ...There are some digital scales that auto zero, so be aware.
Very good point.we have very high precision ... noticed some hard to explain drift in the readings that didn't correspond with the internal monitoring units ... moved all of our wall-outlet powered sensor units to isolated circuits, got them into really good insulators designed for -50C and used battery units for all of the sensor IC's - and the drift went away. The compressors kicking on were sending RF powerful enough to interrupt the sensor IC's for a few milliseconds and recalibration took a few clock cycles.
Let me ask. How many of us maintain laboratory level consistency of our reloading areas in terms of temperature, air movement, humidity, level surface, electro-magnetic field, etc.? Not many.
I did not know that.There are some digital scales that auto zero, so be aware.
I been talking about EMP strike vs. reloading way back! Lee Scoopes, Lee Loaders, manual calipers, a Book made from paper (lol)When an EMP strike occurs or a new ransomware through the power grid, all electronic scales will be useless.
I have Ohaus 10-10/RCBS 5-0-5 as back up.I been talking about EMP strike vs. reloading way back! Lee Scoopes, Lee Loaders, manual calipers, a Book made from paper (lol)
I can load in the candle light!
Remember Bluto in Animal House? I make him look like a neat freak.Let me ask. How many of us maintain laboratory level consistency of our reloading areas in terms of temperature, air movement, humidity, level surface, electro-magnetic field, etc.?
YEP!When an EMP strike occurs or a new ransomware through the power grid, all electronic scales will be useless.
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.............. if we are pursuing greater level of consistency, we must first minimize/eliminate variables that pose greater impact on finished rounds' consistency before we consider variables that pose lesser impact. In the same light, before we consider minimizing/eliminating internal digital scale variables like the load cell mount plate, we must first minimize/eliminate external environmental variables.
What are your group sizes at what range? Are you seeking smaller groups with your shooting? Or is this just higher level writings about your continued pursuit of perfection in reloading while diligently avoiding any mention of shooting results?
And we are not talking about whether more precise metering/weighing of powder will produce smaller groups.
Not at all.
This thread is about objective approach to addressing "zero drift" many members reported whether they are cheaper ~$20 consumer grade scales or more expensive lab/analytical grade scales. It is an extension of recommending use of check weights/pin gauges to verify the accuracy/repeatability of any scale/calipers.
Once we minimize/eliminate the "zero drift", we can then better use the scale for reloading purposes.
Myth busting - What causes digital scale zero drift and can it be fixed? ... this thread is about zero drift of digital scales so no comments about beam scales
Are there scales with zero drift?Ok so let me ask this question, our electric scale has zero drift but check weights confirm the scale resolves correctly once zeroed to the same. What is the problem with the scale if any ?
No problem as long as zero does not drift.our electric scale has zero drift but check weights confirm the scale resolves correctly once zeroed to the same. What is the problem with the scale if any ?
And that's my goal of this thread, for us to consider these different reasons whether internal or external so we can minimize zero drift. BTW, here's the OP:Are there scales with zero drift?
Some more often than others. And all with different reasons.
Myth busting - What causes digital scale zero drift and can it be fixed?
So imo zero drift can be a non factor as long as the scale calibrates to for example 20grains and resolves 20 grains accurately and does not drift during resolution.
As I previously posted, I believe 0.1 gr resolution verified by check weights is "good enough" for most reloading applications (That is if your scale verifies check weights in the powder charge range you are using - Let's leave out the issue of verifying sensitivity/detection down to 0.1 gr with 0.1 gr check weight).So imo zero drift can be a non factor as long as the scale calibrates to for example 20grains and resolves 20 grains accurately and does not drift during resolution.
We calibrate scales to a check weight then push the tare function, now reweighing the check weight should varify resolution, place your pan on the scale, write that weight on the underside of pan in Sharpie.Once it has drifted it thinks your pan is heavier or lighter. So you’re going to be 20 grains plus the drifted amount.
Or that’s my opinion. So I rezero and retare whenever the drift won’t correct with the pan off.
I’m one stage up from rookie so I’m reading intently.