An overview of the：

  Secondary instrument is the signal sampling tube 4 ~ 20mA signal processing into the relevant liquid level indication.The 4-channel secondary instrument is used to process 4 ~ 20mA signals of the signal sampling tube into relevant liquid level indication.The meter has 4 alarm outputs and passive contacts (220V/100mA), which can be set online and remembered automatically.

  Water level indication setting：Precast maximum water level range±3000mm。
  Sampling range：Sampling range of sampling tube6000mm。
  Sampling accuracy：10mm
  Self-checking function：Secondary instrument element faults can be shown (mainly for factory commissioning).