电导率计CD988型号prefix=ons= urn:schemas-microsoft-com:office:office TDS982 TDS983cf-984cd-988cd-989测量范围0-19990.0-10.000-100.00-19990.0-19.99分辨率1ppm0.01ppt0.1CF1us/cm0.01ms/cm精度 2%FullScale自动温度补偿5toprefix=st1ns= urn:schemas-microsoft-com:office:smarttags 50 C(41to122 F)电源4x1.5Valkaline体积168 33 20mm重量65g