English to Russian Tech/Engineering Paper / Paper Manufacturing Technical description

Это заголовок подкоторым идет следующее содержание:

The nominal capacity is measured as the average production through the bale handling system during a defined period of time. A precondition is however that the production level to the bale handling system is at least as high as the guaranteed nominal capacity. If not otherwise specified the measuring shall be performed during a period of 24 hours and within one month from start up of the equipment.

У меня есть три варианта перевода этой фразы, предложите что-нибудь более правильно звучащее кроме "определения размеров"