According to the Swedish Standard, (SS 499 07 07) the scatter in a delay detonator should not be big enough to cause overlapping, that is; a detonator with a lower period number should always detonate before one with a higher period number.
However, Dyno Nobel has internally set the scatter limits tighter to avoid the risk of overlapping. This explains why the precision in the three NONELsystems are different; NONEL UNIDET is best, NONEL LP has the largest scatter and NONEL MS is inbetween.
Good precision, right value
Good precision, wrong value
Bad precision, right mean value
Bad precision, wrong mean value
Published on Oct 26, 2008