Performance: . Linear range: K: 0~30mg/I; Related coefficient: Bigger than 0. 999 . Measuring range: K: 0~10mmoI/L, Na: 0~200mmoI/L . Reproducibility(GV%): K: 1. 5/100(5mmoI/L or -50mmoI/L), Na: 1. 0/100(140mmoI/L). Linear error: K: 2%; Na: 2%: Response time: Not larger than 8s . Solution consumption: 4MI/min; Flameout detection, automatic gas cut-off function. RS232 interface, available to be connected with computer Working conditions: . Environmental Temperature: 10oC-35oC . Relative humidityd85/100 . The instrument should be placed horizontally, avoiding direct sunshine radiation.. There is no disturbance of strong electromagnetic field or vibration.. Fire extinguishing device should be equipped in the application field and goodaeration should be guaranteed. . Power supply: AC220V?2V, frequency 5OHz?Hz, with good grounding producing area:China