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LoRaWAN-Enabled Dissolved Oxygen (DO) Sensor for Water Quality Monitoring

The IoT sensing terminal designed specifically for remote water quality monitoring empowers aquaculture, environmental supervision, and industrial water treatment scenarios through real-time tracking of dissolved oxygen (DO) concentration. Integrated LoRaWAN low-power wide area communication technology enables 10km+ultra long distance data transmission, paired with IP68 waterproof casing and anti biological pollution electrodes, ensuring long-term reliable operation in harsh underwater environments.

LoRaWAN-Enabled Dissolved Oxygen (DO) Sensor for Water Quality Monitoring


Xiamen ZoneWu  LoRa water quality dissolved oxygen sensor is a device used to measure the amount of dissolved oxygen in water. 

Xiamen ZoneWu LoRaWAN water quality Dissolved Oxygen sensor Features:

The DO sensor measures DO with a fluorimetric method that does not consume oxygen and does not use electrolytes.


Temperature-compensated transmitter is installed inside, which can automatically adjust the result of a measurement according to the water temperature to ensure the accuracy of the data.


Imported fluorescent film is used, the quality is good, and the measured data is stable and reliable.


The LoRaWAN collector and water quality dissolved oxygen transmitter are connected with aviation connectors, which are convenient and fast to install and disassemble.


It is based on LoRaTM spread spectrum modulation technology, and the signal can be transmitted far, so there is no need to worry about distance.


It can be very useful in water treatment, aquaculture, environmental monitoring and other industries. 


Technical Parameters

Power SupplyDC12/24V
Weight150g
Operating Emperature0~40℃
Measuring PrincipleFluorescence
Measuring Range0~20mg/L (0~200% saturation)
Measurement Error±3%FS;±0.5℃(25℃
Resolution Ratio0.01mg/L;0.1%;0.1℃
Fluorescent Film LifespanNormal use for 1 year
LDOFluorescence dissolved oxygen transmitter (freshwater version)
LDOSFluorescence dissolved oxygen transmitter (seawater version)
Pressurization0.6Mpa
DO TransmitterDefault 5m (other lengths can be customized)
Line length
FrequencyCN470/IN865/EU868/RU864/US915/AU915/KR920/AS923-1&2&3&4
ModeOTAA  Class A/C
Reporting cycleExternal power supply:10min(Default reporting cycle)
Communication ProtocolLoRaWAN,LoRa TDMA Networking
Equipment information
(Reference)
AppEUI:0000000000000001 
DevEUI:aaaa202404150001
AppKey:00001111222233334444555566667777
MAC Version:LoRaWAN 1.0.3


 Product Applications

1. Aquaculture: Real time monitoring of oxygen content in water.

2. Sewage treatment: promote water purification. Ensure the activity of microorganisms and improve the efficiency of sewage treatment.

3. Environmental protection: Helps evaluate water quality and take corresponding protective measures.

4. Natural water monitoring: It is of great significance for maintaining the ecological balance of water bodies and protecting aquatic organisms.

DO Transmitter Size and Installation

1. Submerged installation: The lead wire of the equipment is passed through the waterproof pipe, and the 3/4 thread on the top of the equipment is connected with the 3/4 thread of the waterproof pipe with raw material tape. Make sure that the top of the equipment and the equipment lines are free of water.

2. Pipe Installation: Connect to the pipe through the 3/4 thread of the device.

Detailed Images


Common knowledge of conductivity DO

What is the definition, expression and source of dissolved oxygen

Dissolved oxygen refers to the molecular oxygen dissolved in water, usually denoted as DO, expressed in milligrams of oxygen per liter of water and saturation percentage. The amount of dissolved oxygen generally comes from the supply of oxygen in the air or the oxygen produced by photosynthesis of plants in water.


How is dissolved oxygen in water consumed by reducing substances and biological activities

Dissolved oxygen is consumed by reducing substances such as sulfides, nitrite ions, and ferrous ions in water, as well as by the respiration of aquatic organisms and the oxidative decomposition of organic matter by aerobic microorganisms.


What factors affect dissolved oxygen saturation content and how do they affect it 

The saturation content of dissolved oxygen is closely related to the partial pressure of oxygen in the air, atmospheric pressure, water temperature, and water salinity. In freshwater, its dissolved oxygen is slightly higher than in seawater; The dissolved oxygen content decreases with the increase of water temperature; When the water temperature decreases, its dissolved oxygen content will increase; The lower the atmospheric pressure, the lower the amount of dissolved oxygen.


Why is dissolved oxygen called the capital of water body, and what is the relationship between it and the decomposition of organic pollutants 

Dissolved gas is the capital of water bodies and a basis for studying the self purification capacity of water. The decomposition of organic pollutants in water requires the consumption of oxygen, and the higher the dissolved oxygen, the stronger the ability of the water to decompose organic pollutants.


How do different dissolved oxygen levels affect fish respiration 

At 20 ° C and 100kPa, approximately 9mg/L of dissolved oxygen is present in pure water. When the dissolved oxygen level in water drops to 5mg/L, some fish experience difficulty breathing.


Application Scenarios

Aquaculture 

Monitor the calcium ion concentration of aquaculture bodies to ensure the health of aquaculture organisms and the stability of water quality. 


Seawater Monitoring

Monitoring the concentration of calcium ions in seawater is conducive to marine ecological research and the regulation of seawater aquaculture. 

Industrial Wastewater 

Monitoring the concentration of calcium ions in industrial wastewater helps with wastewater treatment and achieving compliance with discharge standards. 


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.



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