Dissolved Oxygen Sensor
- Fast & Accurate Measurement：10-second response time and ±0.1mg/L accuracy
- Zero Oxygen Consumption & Maintenance-Free
- Rugged & Durable Construction
- Smart & Easy Installation
- Versatile Applications: Ideal for wastewater treatment, aquaculture, and environmental monitoring.
Overview
4 types of connection available
The sensors are available with different tail connections so that customers can choose according to their needs.
WQS-DO-S01
IP65
5 pole aviation plug, cable length 2m with waterproof connection thread
WQS-DO-S11
IP68
Cable extending directly, cable length 6m with waterproof connection thread
WQS-DO-P01
IP65
5 pole aviation plug, cable length 2m
WQS-DO-P11
IP68
Cable extending directly, cable length 6m
Mounting Suggestions
Mounting bracket are highly recommended for you installation. keep the sensor eract in the water, and minimum 100mm distance between the bottom of the sensor and bottom of detected water body is required, meanwhile, minimum 300mm distance between water surface and sensor level also required.
Note: The mounting bracket is not part of the sensor accessories, if necessary, purchase it separately.
For guidance on selecting the right sensor for your application, consult our water quality sensor selection guide. This optical DO sensor is part of Googolwater's full range of optical water quality sensors for multi-parameter monitoring solutions.
This dissolved oxygen sensor uses fluorescence quenching optical technology — a reagent-free, low-maintenance method for continuous water quality monitoring. Ideal for aquaculture, wastewater treatment, and environmental applications, this optical DO sensor delivers accurate readings without membrane replacement or electrolyte refills.
WQS-DO-S
| Parameter | DO |
| Units | % Saturation, mg/L |
| Range | 0 to 200% air saturation; 0 to 20 mg/L |
| Accuracy | ±0.1 mg/L |
| Resolution | 0.01 mg/L, 0.1% |
| Response time | 10s |
| Principle | Optical：Fluorescence method |
| Operating temperature | 0 - 50 °C (32 - 122 °F) |
| Storage temperature | 0 - 50 °C (32 - 122 °F) |
| Waterproof | IP68, IP65 |
| User calibration | Yes |
| Self-cleaning | Yes |
| Power | DC +12 ~ +24 V |
| Dimensions | Φ30×249 mm |
| Weight | 1kg |
| Communication method | Modbus RS485 |
| Sampling requirements | Temperature: 0 - 50 °C (32 - 122 °F) Flow rate: <3 m/s. Pressure: No more than 1bar, in water flow at 0 - 50 °C (32 - 122 °F) |
| Warranty | 1 year |
