Since July 2010, it has fully replaced the 510 series products.
The large screen is easy to read and can display conductivity or TDS, as well as temperature
Automatic prompt after stable reading
• Electrode constant optional
5 levels of conductivity and TDS range, automatically selected
Up to 5 calibration points
• Can store 100 records 
• Including electrode holder
Measurement parameters
Conductivity/TDS/Temperature
conductivity
Measurement range: 0 μ S/cm~200.0 mS/cm
Resolution 0.01 μ S 0.1 μ S 1 μ S 0.01 mS 0.1 mS
Accuracy ± 1% of the full range
Calibration point      Automatic (4 points); Each range has a maximum of 1 point; Manual (5 o'clock); Up to 1 point per range
Conductivity cell constants 0.1, 1.0, 10.0 (optional)
TDS
Measurement range: 0~100 ppt (when TDS constant is 0.5); 0~200 ppt (TDS constant 1.0)
Resolution 0.01 ppm 0.1 ppm 1 ppm 0.01 ppt 0.1 ppt
Accuracy ± 1% of the full range
temperature
Measurement range (instrument) 0.0~100.0 ℃/32.0~212.0 ℉
Resolution: 0.1 ℃/0.1 ℉
Accuracy ± 0.5 ℃/± 0.9 ℉
Coefficient 0.00~10.00%
Standardization 15.0~30.0 ℃ (adjustable)
Compensation type and range: The electrode comes with a temperature probe for automatic or manual compensation of 0.0~100 ℃/32.0~212.0 ℉, 0~80 ℃/32.0~176.0 ℉
Calibration: 0.1 ℃ incremental offset; Offset range: ± 5 ℃/9 ℉