No you are not being too cautions.
The problem with electronic scales is they drift, its your job to keep them to task.
the following reads a lot harder than it is, you might want to print it and then run through the steps.
Once yhou have a good caliation done, then weight your pan.
Write that njumbr down where you can see it.
put pan on the scale and zero it.
When you lift the pan, it should read the pan weight (stick with me I am not being annoyhing)
When you lift the pan to fill a case, check the weight.
At some point its going to drift.
Zero it. No more than 2/10 off, zero it.
sometimes you have to repeat each time.
Your charge is going to be off that drift amount.
Back weigh the charge.
The concept here is that scales have a range and you want them to work the range right. That's what the heavy weight do, they tell you its good.
The pan weight is a quick calibration check. While not complete, the pan does weigh a lot and if its right when you zero it, then it tells you the range is good
You still want to do a official calibration , but not all the time.
The key is to look at the scale when the pan is off, its should read the pan weight (with a minus)
if its drifted, pan on, zero and you are good.
Some are worse than others. Sometimes each time, others pretty steady.
Solid bench, no metal around, no wind, keep it clean, no electronics next to it or any closer than you can help.
The problem with electronic scales is they drift, its your job to keep them to task.
the following reads a lot harder than it is, you might want to print it and then run through the steps.
Once yhou have a good caliation done, then weight your pan.
Write that njumbr down where you can see it.
put pan on the scale and zero it.
When you lift the pan, it should read the pan weight (stick with me I am not being annoyhing)
When you lift the pan to fill a case, check the weight.
At some point its going to drift.
Zero it. No more than 2/10 off, zero it.
sometimes you have to repeat each time.
Your charge is going to be off that drift amount.
Back weigh the charge.
The concept here is that scales have a range and you want them to work the range right. That's what the heavy weight do, they tell you its good.
The pan weight is a quick calibration check. While not complete, the pan does weigh a lot and if its right when you zero it, then it tells you the range is good
You still want to do a official calibration , but not all the time.
The key is to look at the scale when the pan is off, its should read the pan weight (with a minus)
if its drifted, pan on, zero and you are good.
Some are worse than others. Sometimes each time, others pretty steady.
Solid bench, no metal around, no wind, keep it clean, no electronics next to it or any closer than you can help.