CharlieNC
Gold $$ Contributor
Using the CM for a while on non-critical loads, I began to increase my cross-checks on a more sensitive scale. If all goes well the CM is within +/- 0.03gr, much tighter than the 0.1 resolution. How?
Using the more sensitive scale, I increased a load by 0.01 increments; weighing them on the CM I observed the reading did not change until a full 0.1 increase occurred. Meaning it truncates to the lower 0.1 gr, not rounding. This means during the incremental trickling/weighing stage it will not decide to stop until the full 0.1 programmed value is achieved vs stopping based on a rougher round off value. It also means it it overshoots by a few .01's then it doesn't care until a full 0.1 error occurs.
The most critical requirement to achieve uniform loads lies in achieving very fine charge increments during trickling. If you observe the last trickles, as long as these are typically small with no clumps of inadvertant vibration then the uniformity is much better than maybe expected. If the charging stops suddenly, probably vibration yielded a false reading and an undercharge occurred; but unfortunately an error will not be displayed because it though the false reading was correct.
Adjust to achieve very fine trickling; the uniformity is no better than the trickling increment. No vibration, watch for clumpling, and you should achieve excellent uniformity.
Using the more sensitive scale, I increased a load by 0.01 increments; weighing them on the CM I observed the reading did not change until a full 0.1 increase occurred. Meaning it truncates to the lower 0.1 gr, not rounding. This means during the incremental trickling/weighing stage it will not decide to stop until the full 0.1 programmed value is achieved vs stopping based on a rougher round off value. It also means it it overshoots by a few .01's then it doesn't care until a full 0.1 error occurs.
The most critical requirement to achieve uniform loads lies in achieving very fine charge increments during trickling. If you observe the last trickles, as long as these are typically small with no clumps of inadvertant vibration then the uniformity is much better than maybe expected. If the charging stops suddenly, probably vibration yielded a false reading and an undercharge occurred; but unfortunately an error will not be displayed because it though the false reading was correct.
Adjust to achieve very fine trickling; the uniformity is no better than the trickling increment. No vibration, watch for clumpling, and you should achieve excellent uniformity.