Project Description

Online Dissolved Oxygen Sensor

The optical dissolved oxygen sensor measures dissolved oxygen using the principle of oxygen dynamic luminescence quenching technique. When blue light excites sensor film, the sensing film emits red light. The
phase difference between the blue excitation and returned red emission is measured, and the result is
used to calculate DO concentration.

Dissolved Oxygen Features

  • 0-20mg/L or 0-200% Saturation

  • 0~50 ℃;IP68 rating

  • Membraneless, no electrodes design

  • No oxygen consumption

  • Flow Independent

  • Automatic temperature compensation

  • No H2S Interference

  • Low Drift, fast response, and more accurate

  • Low Maintenance, low operating cost

  • Easy sensor cap replacement

  • RS-485; MODBUS protocol compatible

  • Digital Sensor

Technical Parameters

Range 0-20mg/L or 0-200% Saturation
Response Time 10 sec
Housing IP Rating IP68
Accuracy 1%
Drift <1% per year
Working Temperature Range 0 ~ 60℃
Temperature Accuracy ± 0 . 2 ℃
Interface Support RS-485, MODBUS protocols
Construction ¾ inch NPT
Power Requirements DC 6~12V +/-5%, current <50mA
Temperature Sensor Type NTC
Sensor OD 26mm
Sensor Length 177.5 mm
Cable Length 10m standard; 5m, 15m, and 30m optional
Calibrations Support one point and two-points calibrations
Sensor Cap Lifetime 1 Year(at normal use)
Body materials POM and Stainless steel
Pressure 5 bar

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