BS ISO 6689:2021 pdf download – Equipment for harvesting — Combine harvesters and functional components — Vocabulary 1 Scope This documentspecifies terms and definitions related to combine harvesters and their component parts.lt identifies dimensions and other characteristics aimed at allowing comparison of operations of thecomponent parts, in association with ISO 8210, which lays down methods of measuring characteristicsand performance requirements for the terms defined. Normative references There are no normative references in this document. 3Terms and definitions ISO and IEC maintain terminological databases for use in standardization at the following addresses:—ISO Online browsing platform: available at https://www.iso.org/obp 一IEC Electropedia: available at http://www.electropedia.org/ 3.1Terms related to crops 3.1.1 grain damage deteriorated kernels attributable to the machine, expressed as the percentage by mass, to one decimalplace, of kernels in the sample Note 1 to entry:The term “grain” covers the whole range of grains,seed, legumes and fruits which are capable ofbeing recovered from crops by a combine harvester. 3.1.1.1 visible grain damage grain damage (3.1.1) where the grain coat appears broken to the naked eye Note 1 to entry: The term “grain”covers the whole range of grains, seed, legumes and fruits which are capable ofbeing recovered from crops by a combine harvester. 3.1.1.2 invisible grain damage grain damage (3.1.1) which requires instruments or special procedures for determination Note 1 to entry:The term “grain” covers the whole range of grains, seed, legumes and fruits which are capable ofbeing recovered from crops by a combine harvester. 3.1.2 unthreshed headunthreshed grain any head, pod, cob or part thereof from which all or part of the grain has not been detached 3.1.3 returns tailings material from the grain-cleaning mechanism which is recirculated for reprocessing 3.1.4 material-other-than-grain to grain ratio MOG:G ratio total mass of material-other-than-grain (MOG) divided by total mass of grain in the sample Note 1 to entry: The term “grain” covers the whole range of grains, seed, legumes and fruits which are capable of being recovered from crops by a combine harvester. 3.1.5 harvest residue MOG portion of the crop including weed seed discharged from the combine harvester 3.1.5.1 chaff harvest residue discharged from the cleaning device(s) 3.1.5.2 straw harvest residue discharged from the separating device(s) 3.1.6 moisture content moisture content of the sample expressed on the wet basis (mass of water in 100 grams of unprocessed sample) Note 1 to entry: See ISO 712. 3.1.7 plant length length of the plant from its base...
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