美国西特电子天平美国西特电子天平型号称量最小读数线性重复性称盘尺寸BL-120S120g0.001g±0.002±0.001Φ120mmBL-200S200g0.001g±0.002±0.001Φ120mmBL-310S310g0.001g±0.002±0.001Φ120mmBL-410S410g0.001g±0.002±0.001Φ120mmBL500S500g0.001g±0.002±0.001Φ120mmBL-1200S1200g0.01g±0.02±0.01Φ158mmBL-2000S2000g0.01g±0.02±0.01Φ158mmBL-3100S3100g0.01g±0.02±0.01Φ158mmBL-4100S4100g0.01g±0.02±0.01Φ158mmBL-5000S5000g0.01g±0.02±0.01Φ158mmBL-120LCD120g0.001g￠120mmBL-200LCD200g0.001g￠120mmBL-300LCD300g0.001g￠120mmBL-410LCD410g0.001g￠120mmBL-1200LCD