椭圆齿轮流量计8031型的原理是采用椭圆齿轮，部分订货号如下：
433608 KOMP-000-8031-4336-08E-00-433608E
433609 KOMP-000-8031-4336-09F-00-433609F
437524 8031-GS82-THAA-P7-L-F1-3-BDG/DC-Z * GA01+JW06
437982 8031-GS82-THFF-P7-F-F1-3-BDG/DC-Z * GA01+JW06
438531 8031-GS82-THAA-P7-F-F1-3-BDG/DC-Z * GA01+JW06
438532 8031-GS82-THFF-P7-L-F1-3-BDG/DC-Z * GA01+JW06
444889 8031-DA21-THFF-P7-F-F1-3-BDG/DC-Z * GA01+JW10
559729 8031-DA21-PMAA-P7-F-F1-3-BDG/DC-Z * JW06
560504 8031-GS83-POFF-P7-T-F1-3-BDG/DC-Z * GA01+JW12
783717 8031-DA21-PMFF-P7-F-F1-3-BDG/DC-Z * JW06
783718 8031-DA21-PMFF-P7-L-F1-3-BDG/DC-Z * JW06
783719 8031-GS82-PMFF-P7-F-F1-3-BDG/DC-Z * JW06
783720 8031-GS82-PMFF-P7-L-F1-3-BDG/DC-Z * JW06
783721 8031-GS82-THFF-P7-F-F1-3-BDG/DC-Z * JW06
783722 8031-GS82-THAA-P7-F-F1-3-BDG/DC-Z * JW06
783723 8031-GS82-THCC-P7-F-F1-3-BDG/DC-Z * JW06
783724 8031-GS82-THFF-P7-L-F1-3-BDG/DC-Z * JW06
783725 8031-GS82-THAA-P7-L-F1-3-BDG/DC-Z * JW06
783726 8031-GS82-THCC-P7-L-F1-3-BDG/DC-Z * JW06
788115 8031-GS83-POFF-P7-T-F1-3-BDG/DC-Z * GA01+JW06
