Specifications |
Model |
Orion 4-Star Plus pH/mV/DO Portable Multiparameter Meter |
pH Mode |
Range |
-2.000 to +19.999pH |
Resolution |
0.1/0.01/0.001pH |
Relative Accuracy |
±0.002pH |
Calibration |
AUTO-CAL* and/or Manual Calibration; 1 to 5 points; US/NIST, DIN, and custom buffers recognized |
mV/ORP Mode |
Range |
±1999.9mV |
Resolution |
0.1mV |
Relative Accuracy |
±0.2mV or 0.05%, whichever is greater |
Calibration |
EH autocalibration to standard hydrogen electrode for ORP measurements |
DO Mode |
Concentration Range |
0.00 to 90.00mg/L |
Concentration Resolution |
0.0/0.00mg/L |
% Saturation Range |
0.0 to 600% |
% Saturation Resolution |
0.1% |
Relative Accuracy |
±0.2 mg/L |
Salinity Factor |
0 to 45 ppt |
Barometric Pressure [Compensation Range] |
450–850mmHg |
Calibration |
Auto Calibration or Manual Input;: water-saturated air and air-saturated water, Winkler Titration for BOD |
Temperature Mode |
Range |
-5° to +105°C |
Resolution |
0.1°C up to 99.9°C, 1.0 over 99.9°C |
Relative Accuracy |
±0.1°, ±1 digit |
Temperature Compensation |
DO, auto; pH, auto/manual -5° to +105°C |
Display |
Custom LCD; simultaneous display of selected measurement and temperature, pH calibration points, and current electrode condition |
Inputs/Outputs |
Inputs |
Waterproof 9-Pin Mini-DIN Locking for DO; waterproof 8-Pin Mini-DIN Locking for ATC probe; waterproof BNC for pH or ORP electrodes |
Sensor Types |
Polarographic DO probe; pH or ORP electrodes |
Outputs |
Waterproof bidirectional RS-232, stereo jack, optional USB interface cable |
Data Management |
GLP Electrode Veri?cationSaves 750 points by time, stability or manual read with time/date stampCalibration log of last 10 calibrationsUser method storage for 10 proceduresAdvanced self-test and diagnostics routinesPassword protectionDownloadable software and methods updates via Internet |
GLP Compliance |
21 CFR Part II Compliant with optional software |
Regulatory and Safety Compliance |
CE, CSA, UL, TUV, FCC Class A limits |
Environmental Operating Conditions |
Ambient Operating Temperature |
5° to +45°C |
Relative Humidity |
5 to 85% noncondensing |
IP Rating |
IP67 waterproof |
Stability |
SMART STABILITY* and SMART AVERAGING* Resolution dependent/automatic |
Power Supply |
4 x 1.5V AA batteries |
Warranty |
Three years from date of purchase |