Dissolved Oxygen Range测量范围 0 to 19.9 mg/l or ppm Resolution & Accuracy精度 0.01 mg/l, 0.1 ppm & ±1.5% Full Scale % Saturation of Oxygen含氧量 0.0 to 199.9 % Resolution & Accuracy精度 0.1 % & ±1.5% Full Scale Temperature Range温度范围 0.0 to 50.0 °C (32.0 to 122 °F) Resolution & Accuracy精度 0.1 °C (0.1 °F) & ± 0.3 °C (0.5 °F) Salinity Correction盐度补偿 0.0 to 50.0 ppt Barometric Pressure Correction压力补偿 500 to 1499 mm Hg or 66.6 to 199.9 kPA Method Manual input for automatic correction No. of DO Calibration Points Up to 2 points; 100% in air and/ or 0% in known solution Temperature Compensation温度补偿 Automatic / Manual (0 to 100 °C) Back-lit Display Yes Memory 50 data sets Special Functions Stability Indicator; Self-diagnostic; Electrode characteristics; Hold & Auto-Power Off after20 minutes Power 4 'AAA' x 1.4V batteries