SPS-DO water quality sensor

SPS-DO Dissolved Oxygen Water Quality Sensor

The dissolved oxygen water quality sensor is based on the principle of fluorescence quenching. When light shines on the fluorescent material, the fluorescent material will be excited and emit red light. Since oxygen molecules can take away energy, the time of excited red light is inversely proportional to the concentration of oxygen molecules.
The dissolved oxygen concentration can be calculated by measuring the duration of red light. SPS-DO sensors can meet all the requirements of field operation and long-term or short-term tests. On the premise of not consuming oxygen, fluorescence technology can provide users with accurate measurement data for all measurement environments, especially those with low oxygen concentrations.

  • Optical in-situ measurement, no actual pollution, environmentally friendly
  • Fast measurement: the fastest measurement cycle is 10 second
  • Long maintenance-free cycle, with its cleaning brush for cleaning
  • RS485 communication mode can quickly connect to the meter controller, control the sensor
  • IP68 protection grade can be used in harsh environments
  • Low power consumption, can be powered by battery, convenient for equipment deployment

Specification

ItemSpecification
PrincipleFluorescence method
Dimensionφ30×240mm
Power requirementsDC+12V~+24V
Measurement period10 seconds to 65535 seconds
Operating temperature0 to 50℃
Pressure6bar
MaterialAISI 316L
Cleaning methodCleaning brush
Sample flow rate<3m/s
CommunicationRS485(Modbus RTU), Bluethooth

Parameter

ParameterModel No.RangeResolutionAccuracy
（Standard solution）
DOSPS-DO0 – 20 mg/L
0 – 20 ppm
0 – 200 %		0.01 mg/L
0.1%		±0.1 mg/L

SPS-DO Datasheet

Specsens Brochure

Application

River, watershed monitoring

Effective for influent and effluent monitoring in both domestic and industrial wastewater.

Sewage Treatment Optimization

Supports treatment process efficiency, providing actionable data for parameter adjustments.

Urban Water Networks

Monitors water quality in municipal pipe networks to ensure compliance and quality.

Environmental Water Bodies

Ideal for basin, surface water, and groundwater monitoring.

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