型号 测量范围 分度值
15DB3-S 2-15
30DB3-S 3-30
60DB3-S 6-60 1
120DB3-S 10-120 2
230DB3-S 30-230 5
450DB3-S 50-450 5
900DB3-S 100-900 10
1800DB3-S 200-1800 20