| Accuracy | 
                                                        Dissolved Oxygen 0 to 200% air saturation ± 1% of the reading or ± 1% air saturation, whichever is greater; 200 to 500% air saturation ± 10% of the reading; 0 to 20 mg/L ± 0.1 mg/L or ± 1% of reading, whichever is greater; 20 to 50 mg/L ± 10% of the reading | Temperature ± 0.2°C | Barometer ± 1.5 mmHg from 0 to 50°C 
 | 
                                                    
                                                
                                                    
                                                        | Certification | 
                                                        RoHS, CE, WEEE, C-Tick, VCCI, IP-67 (waterproof), 1-meter drop test, Made in USA | 
                                                    
                                                
                                                    
                                                        | Connectivity / Communications | 
                                                        USB 2.0 for data transfer and user-upgradeable instrument firmware. Communications saddle, USB cable and Data Manager software included. | 
                                                    
                                                
                                                    
                                                        | Connector | 
                                                        Metal MS (military spec) waterproof with bayonet lock | 
                                                    
                                                
                                                    
                                                        | Data Management | 
                                                        5000 data set memory in ProODO with 100 user-defined sites and site names. Data Manager desktop software included. 
 | 
                                                    
                                                
                                                    
                                                        | Desktop Software Compatible | 
                                                        Data Manager desktop software included. Minimum PC requirements - Windows 2000 with SP4 (minimum) or XP with SP2 (minimum), Vista 7 or Windows 8 | 300 MHz or higher Pentium-compatible CPU | 128 MB of RAM or higher | 80 MB or more of free hard-disk space. | 
                                                    
                                                
                                                    
                                                        | Digital / Digital Sensors | 
                                                        Yes | 
                                                    
                                                
                                                    
                                                        | Equipment used with | 
                                                        ProODO cable and probe assemblies, ProOBOD | 
                                                    
                                                
                                                    
                                                        | GLP Compliance | 
                                                        Yes, detailed GLP information is stored and is available to view, download or print | 
                                                    
                                                
                                                    
                                                        | Graphic Display | 
                                                        Graphic display can be seen in any lighting condition and with polarized glasses | Backlit display AND keypad | Includes detailed on-board Help | 
                                                    
                                                
                                                    
                                                        | Languages | 
                                                        Japanese, Polish, English, Spanish, German, French, Italian, Norwegian, Portuguese | 
                                                    
                                                
                                                    
                                                        | Logging Capabilities | 
                                                        Single or Continuous | 
                                                    
                                                
                                                    
                                                        | Measurement Range | 
                                                        Dissolved Oxygen 0 to 500% air saturation, 0 to 50 mg/L | Temperature -5 to 70°C (DO compensation from -5 to 50°C) | Barometer 375 to 825 mmHg | Salinity Input Range 0 to 70 ppt (manual input) 
 | 
                                                    
                                                
                                                    
                                                        | Memory | 
                                                        100 GLP files, 5,000 data sets (data, date, time, user-defined info) | 
                                                    
                                                
                                                    
                                                        | Multiparameter | 
                                                        Yes - Dissolved Oxygen, Temperature, and Barometric Pressure | 
                                                    
                                                
                                                    
                                                        | Operating Temperature | 
                                                        -10 to 60°C | 
                                                    
                                                
                                                    
                                                        | Parameters Measured | 
                                                        Dissolved Oxygen with an optical sensor, Temperature, Built-in barometer 
 | 
                                                    
                                                
                                                    
                                                        | Power | 
                                                        2 alkaline C-cells provide 80 continuous hours at ambient temperature without backlight, ProComm II saddle provides USB power or optional wall power, cigarette lighter, and universal cell phone charger options | 
                                                    
                                                
                                                    
                                                        | Resolution | 
                                                        Dissolved Oxygen 0.1% air saturation, 0.01 or 0.1 mg/L (auto-scaling) | Temperature 0.1°C | Barometer 0.1 mmHg 
 | 
                                                    
                                                
                                                    
                                                        | Sampling | 
                                                        Yes | 
                                                    
                                                
                                                    
                                                        | Storage Temperature | 
                                                        -20 to 70°C | 
                                                    
                                                
                                                    
                                                        | Unit of Measure | 
                                                        Dissolved Oxygen - % air saturation and mg/L | Temperature - °C, °F, K | Barometric Pressure - mmHg, inHg, mBar, Psi, KPa | 
                                                    
                                                
                                                    
                                                        | User Calibratable | 
                                                        Yes | 
                                                    
                                                
                                                    
                                                        | User Replaceable | 
                                                        Yes - cable assembly with built-in probe is replaceable | 
                                                    
                                                
                                                    
                                                        | Warranty | 
                                                        3-year instrument; 2-year field cables, 1-year sensor cap | 
                                                    
                                                
                                                    
                                                        | Waterproof | 
                                                        floats, IP-67 (even with the battery cover off and cable disconnected) |