Thermo Scientific Orion Star
™
and Star Plus Meter User Guide
EN-64
Meter Specifications
Conductivity
Range
0.000 to 3000 mS/cm, auto-resolution with cell constant dependence
Resolution
4 significant figures down to 0.001 µS/cm, cell constant dependant
Relative Accuracy
0.5 % ± 1 digit or 0.01 µS/cm, whichever is greater
Cell Constant
0.001 to 199.9 cm
-1
Reference Temperature
5 °C, 10 °C, 15 °C, 20 °C or 25 °C
Resistivity Range
0.0001 to 100 Megohm
Resistivity Resolution
Automatic
Resistivity Relative Accuracy
0.5 % ± 1 digit
Salinity Range
0.1 to 80.0 ppt NaCl equivalent, 0.1 to 42 ppt practical salinity
Salinity Resolution
0.1 ppt
Salinity Relative Accuracy
0.1 ± 1 digit
TDS Range
0 to 19999 mg/L
TDS Resolution
1 mg/L
TDS Relative Accuracy
0.5 % ± 1 digit
Temperature
Range
-5 to 105 °C
Resolution
0.1 up to 99.9 °C, 1.0 over 99.9 °C
Relative Accuracy
± 0.1 °C
Temperature* (RDO
®
Optical Dissolved Oxygen Meter Only)
Range
0 to 50 °C
Resolution
0.1 °C
Relative Accuracy
± 0.3 °C
*
This temperature specification is only for the Star Plus RDO optical dissolved
oxygen meter when it is used with the RDO optical probe. The 4-Star and 5-Star
RDO meters will have the standard temperature specifications when used with
an electrode other than the RDO probe.
Note:
Specifications are subject to change without notice.
