Description Overview GAOTek dissolved oxygen sensor is based on the fluorescence quenching principle. The concentration of oxygen molecule can be calculated by measuring the phase difference between excitation light and reference light and comparing with the internal calibration value. It is suitable for surface water, groundwater, industrial water, wastewater and other application. Features Low maintenance cost, no need to replace the diaphragm and electrolyte No oxygen consumption, no flow speed limited Automatic temperature compensation, good stability Optical measurement, fast response No pollution, environmental protection detection Technical Specification Specification Details Main Material 316 Stainless Steel POMO ring: viton ring rubber ring Cable: PVC Waterproof Rate IP 68 Measuring Range 0% to 200% saturability 0 mg/L to 20 mg/L Measuring Accuracy <±3% Resolution 0.001mg/L to 0.01mg/L (according to range) Data Output RS 485, Modbus Power DC 6 V to 12 V, current < 20 mA Storage Temperature -4 ℉ to 140 ℉ (-20 ℃ to 60 ℃) Pressure Range ≤6 bar Calibration Way One point or two-point calibration Cable Length 0.1 in (2.54 mm) standard cable, other length can be optional; Size 0.86 in x 5.98 in (22 mm x 152.70 mm) Weight 0.77 lb (0.35 kg)
