High Precision RS485 12-24VDC Dissolved Oxygen Sensor for Online Water Quality Monitoring
Product Introduction:
Accurate measurement of dissolved oxygen is directly related to water quality management and process control effectiveness in scenarios such as aquaculture, environmental monitoring, and sewage treatment. ZW-DO-PR is an online fluorescent dissolved oxygen sensor designed based on the principle of fluorescence quenching. It adopts RS485 interface and Modbus RTU protocol, with stable output and strong anti-interference ability. It can be easily integrated into various PLCs, industrial computers, and IoT monitoring systems. Unlike traditional electrochemical sensors, this product does not require electrolyte, polarization, or consume oxygen. The measurement results are not affected by flow rate and are not affected by chemical substances such as sulfides, greatly reducing on-site maintenance frequency and usage costs.
- In terms of core performance, the sensor has a measurement range of 0-20.00 mg/L, a resolution of up to 0.01 mg/L, an accuracy of ± 2%, a response time T90 of less than 30 seconds, and a minimum detection limit of 0.08 mg/L. Built in Pt1000 temperature sensor and salinity compensation function, which can automatically calibrate according to actual water quality to ensure accurate and reliable data. The fluorescent film head has a lifespan of up to 1 year under normal use, and is easy to replace, further extending the working cycle of the sensor.
- In terms of structure and protection, the shell is made of POM, ABS/PC alloy, and 316L stainless steel materials, with a protection level of IP68. It can be immersed in an underwater pressure environment of 0.2MPa for a long time, and is corrosion-resistant and not easily damaged. The cable is a 4-core shielded wire, with a standard configuration of 5 meters, and supports customization.
- At the system integration level, the RS485 digital output interface supports multi-point networking and long-distance transmission, compatible with PLCs, industrial computers, and various data acquisition modules, plug and play, and easy deployment.
This product is widely used in aquaculture, environmental monitoring, drinking water treatment, industrial circulating water, scientific research and teaching, and is an ideal choice for improving the intelligent level of water quality management.
RS485 Water quality DO sensor:
| Model |
ZW-DO-PR |
| Case material |
POM, ABS/PC alloy, 316L stainless steel |
| Measurement principle |
Fluorescence method |
| Range |
0～20.00 mg/L (0～200% saturation, 25℃) |
| Resolution |
0.01mg/L, 0.1℃ |
| Accuracy |
±2%, ±0.3℃ |
| Response time (T90) |
＜30s |
| Minimum detection limit |
0.08mg/L |
| Calibration method |
Two-point calibration |
| Cleaning method |
/ |
| Temperature compensation |
Automatic temperature compensation (Pt1000) |
| Output method |
RS-485 (Modbus RTU) |
| Storage temperature |
-5～65℃ |
| Working conditions |
0～50℃, ≤0.2MPa |
| Installation method |
Submersible installation, 3/4 NPT |
| Power consumption |
0.2W@12V |
| Power supply |
12～24V DC |
| Protection level |
IP68 |
| Life of fluorescent membrane head |
1 year (under normal use) |
| Cable length |
5 meters, other lengths can be customized |
Product Display:
Application:
- Aquaculture: Real time monitoring of dissolved oxygen to ensure the healthy growth of fish, shrimp, and crabs.
- Wastewater treatment: precise control of aeration process, energy saving and consumption reduction.
- Environmental monitoring: online analysis of river and lake water quality.
- Industrial circulating water: prevent equipment corrosion and optimize water treatment.
- Research and teaching: experiments and teaching demonstrations, stable and reliable data.
Why RS485 for Water Quality Dissolved Oxygen Monitoring?
Industrial-Grade & Stable Data Transmission: RS485 delivers robust anti-interference performance for real-time, reliable hardness data transmission in harsh environments (e.g., industrial boilers, municipal water supply), ensuring accurate monitoring.
Easy Integration & Scalability:Supports multi-node networking, seamlessly integrates with mainstream PLC/RTU systems, enabling flexible deployment and reducing system integration costs and maintenance complexity.
Production Process:
FAQ:
1.Are you manufacture?
A:Yes,we are Tranmitter manufacturer and exporter in China with more than 10 years of CE,ROHS,FCC,ISO and 11 patents experience.
2.Do you offer OEM services?
A:Yes,we can provide you with OEM services and design housings and logos.
3.DO you offer free samples?
A:Sorry,we don't offer free samples.After ordering in bulk,we will deduct the sample fee from the second order.
Why choose us:
- Strong R & D: 30+ Senior experts and highly educated personnel formed a R & D team, heavy investment, master a number of core technologies and patents.
- Professional and effective solutions: for smart environmental protection, agriculture and other fields, to provide customized compound networking solutions.
- Full range of products: covering the whole industry chain products from data collection to platform services to meet diverse needs.
- Excellent quality: we have perfect quality control system, strictly quality control each production link, low defective rate.
- Good service: 7×24 hours fast response, Professional pre-sale, sale, after-sales team support.
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High Precision RS485 12-24VDC Dissolved Oxygen Sensor for Online Water Quality Monitoring Images
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