Y600-A&Y507-A Portable Dissolved Oxygen Meter
Y507-A DO sensor incorporates internationally advanced fluorescence lifetime technology, which is based on the physical principle of quenching specific substances to active fluorescence. This technology ensures oxygen-independent operation, eliminates flow limitations, requires no electrolyte, and minimizes the need for maintenance and frequent calibration.
Y600-A handheld meter features an intuitive operating keyboard, a backlight display, and a user-friendly interface with comprehensive functions. It supports plug-and-play connectivity for most Yosemitech sensors, enabling automatic identification. The device facilitates seamless data measurement, storage, parameter setting, and sensor calibration, while also supporting data export.
Y600-A and Y507-A portable optical dissolved oxygen meter offer temperature and pressure automatic compensation, as well as manual salinity input compensation. The DO value can be automatically locked, and users can configure filter mode settings. This DO meter demonstrates high precision and excellent stability, making it suitable for use in unstable water environments such as aeration ponds and wastewater treatment plants.
- Lightweight and portable;
- High efficiency fluorescent film;
- Fast, easy-to-read results with large digital LCD readout;
- No oxygen consumption, no flow limitations;
- Fast response, higher than national standards;
- All calibration data is stored on the sensor for on-site direct installation and use.
| Name | Y507-A Handheld Dissolved Oxygen Sensor |
| Measuring principle | Fluorescence method |
| Range | 0-50mg/L or 0-500% Saturation |
| Accuracy | 0-20mg/L：±1% or ±0.2mg/L ＞20mg/L：±5% or ±0.6mg/L |
| Temperature range | 0-50℃ |
| Maximum water depth | 60m |
| IP range | IP68 |
| Interface | match Yosemitech Y600-A handheld meter |
| Weight | 204g |
| Size | Φ26mm*175mm |
| Cable length | 5 m (default), customizable |
| Calibration | 1-point or 2-point calibration |
| Sensor housing material | 316L |
| Name | Y600-A Multi-parameter Handheld Meter |
| Weight | 460g |
| Power supply | 2 18650 rechargeable batteries |
| Working temperature | 0-50℃ |
| Storage temperature | -30~70℃ |
| Display | 54.38 x 54.38mm LCD with backlight |
| Data storage/export | Supports |
| Air pressure compensation | Built-in in the meter, automatically compensates for 50 to 115 kPa. |
| IP range | IP67 |
| Timed shutdown | Supports |
- Dissolved Oxygen Sensor
- Dissolved Oxygen Sensor Protective Guard
- USB Flash Disk
- 10m Cable（default), Customizable
- Wristband
- User Manual
- Delivery Inspection Repor
- Other Accessorios
Aquaculture:
Field detection: A portable online dissolved oxygen tester can be used on various measuring points to measure the optical DO angle and real-time transmission, providing early-warning information for water quality management strategies.
Emergency treatment: To promptly measure and among quick emergency response in the event of water quality issues, use portable sensors.
Water quality monitoring:
Environmental monitoring: These sensors include those used to monitor dissolved oxygen levels in the natural water bodies like rivers, lakes and oceans thus helps in determining whether they are healthy or balanced eco systems.
Tracing pollution source: In the event of a pollution incident, portable sensors can help track down where contamination originated from and therefore both assess the extent and establish plans for cleanup.
Laboratory research:
Field measurements: Portable DO sensors are ideal for conducting field experiments and scientific research, delivering real-time data that can help in such studies.
School: Portable sensors are also a good choice for students in elementary or high school to perform experiments and take measurements on their own environmental science and biology courses.
Industrial applications:
Waste water treatment: Portable dissolved oxygen sensors are used to monitor the levels of dissolved oxygen during waste waters processing, necessary for a complete and effective process in compliance with current regulations on emissions.
Process control: particularly in sectors like chemical and food processing; maintain monitor of the dissolved oxygen content material right through manufacturing to be sure prime quality and procedure protection.
Drinking water monitoring:
Monitoring water source: The portable sensors are utilized to check the dissolved oxygen level in drinking water sources for safety and quality of the provided source.
Filters of household/commercial water purification equipment for discharged detection: acquire dissolved oxygen content in the discharged water from household/community use/Centralized Life and Industrial Equipment System Water purifier so as to determine if the home or community area, which can also check whether purity within specifications.
Ecological protection:
Save wetland: through the use of portable DO sensors to test the water quality of a designated area and assess its ecosystem health.
Fish resource management: With the help of portable sensors, we can also monitor and control water quality in fish habitats; carry on a scientific basis for protection and utilization.
Chromophoric Dissolved Organic Matter or Colored Dissolved Organic Matter (CDOM): Both refer to organic matter in water that absorbs strongly in the ultraviolet (UV) spectrum. Fluorescent Dissolved Organic Matter (fDOM) refers to the fraction of CDOM that fluoresces.
A dissolved oxygen sensor is a device used to measure the concentration of oxygen dissolved in a liquid, typically water. These sensors are essential in various fields such as environmental monitoring, water treatment, aquaculture, and industrial processes. They provide critical data for understanding the health and quality of water bodies by measuring the amount of oxygen available to aquatic organisms.
Measuring dissolved oxygen (DO) in water is crucial for several reasons across different fields.
1. Aquaculture:
Fish farms and aquaculture operations rely on stable DO levels to maintain fish health and growth rates. Low DO can lead to fish stress, poor growth, or even mass mortality.
2. Wastewater Treatment:
In treatment plants, DO is monitored to ensure efficient biological processes. Aerobic bacteria in the treatment process require sufficient oxygen to break down organic matter.
3. Predicting Ecosystem Changes:
Regular DO monitoring can serve as an early warning system for ecosystem changes, such as algal blooms or fish kills, allowing for timely interventions.
4. Indicator of Water Quality:
DO levels are a key indicator of the health of aquatic ecosystems. Adequate oxygen levels are essential for the survival of fish and other aquatic organisms. Low DO can lead to hypoxic conditions, which can cause stress or death for aquatic life.
5. Biological and Chemical Studies:
Understanding the oxygen dynamics in water bodies is essential for research in limnology, oceanography, and environmental science. DO levels affect chemical reactions and biological processes in water.
Yosemitech supply one type of Portable Dissolved Oxygen Meter and three types of Optical Dissolved Oxygen Sensors for do measurement and detector in water. Our dissolved oxygen Meters and Sensors provide high-precision measurement and are built to withstand the harshest applications, requiring minimum maintenance and helping you achieve increased efficiency and reduced operating costs.
Dissolved oxygen (DO) is one of the most vital indicators of water quality. High DO levels improve the taste of drinking water, but this can cause corrosion in water pipes. Alternatively, low dissolved oxygen levels below 5.0 mg/L stress aquatic life and creates hypoxic conditions.
Y505-A Dissolved Oxygen Sensor for Aquaculture
1. Adopt fluorescence method
2. Digital sensor, supports RS485, MODBUS protocol
3. No oxygen consumption, no flow limit
If you have any inquiries, please don't hesitate to contact us. We are here to assist you with dedicated service.
Yosemitech optical dissolved oxygen probe provides high accuracy in measuring dissolved oxygen levels, making it an essential tool for aquaculture, environmental monitoring, and aquatic research.
Why choose Yosemitech's Optical Do Sensor?
Advanced Technology: High performance self-developed fluorescent material, no oxygen consumption, no flow limit, no electrolyte.
User-friendly Design: Easy to install and operate, it’s perfect for both seasoned professionals and newcomers to the field.
Durability: Adopting titanium housing. Suitable for withstand harsh environments.
If you are finding a optical dissolved oxygen sensor, Yosemitech is your best choice!
Portable dissolved oxygen meter adopts fluorescence measurement principle. Key features of this device include the absence of oxygen consumption during measurement, no flow rate limitations, no need for preheating, no requirement for electrolyte.
From April 21th to 23rd, 2025, IE Expo China 2025 concluded successfully at the Shanghai New International Expo Centre. As a highly anticipated communication platform in the industry, the exhibition attracted exhibitors, experts, scholars, and industry elites from around the world to gather in Shanghai. Through various forms such as cutting - edge technology displays and high - end forum sharing, it created a professional and forward - looking audio - visual feast for the industry.
Suzhou Yosemite Technology Co., Ltd. ("YOSEMITECH"), which has been deeply involved in the water quality monitoring field for over 11 years, always adheres to the mission of "Water Monitoring Made Simple". YOSEMITECH showcased its self - developed water quality monitoring sensors and instruments at the exhibition. As a manufacturer of water quality monitoring sensors, we had in - depth exchanges with domestic and foreign partners and industry peers during the exhibition. It fully demonstrated its profound expertise in areas such as water quality sensor research and development and intelligent monitoring system integration, and continuously empowered global water quality monitoring scenarios with innovative technologies to promote the efficient and intelligent development of the industry.
Y505-A Dissolved Oxygen Sensor Calibration
Required equipments and raw materials
Required equipments: two 1L beakers, one glass stirring bar, one air aeration pump, one set of gloves.
Raw materials: anhydrous sodium sulfite (CAS:7757-83-7), distilled water or deionized water.
Calibration steps
There are two methods of user calibration for the DO sensor: one-point calibration and two-points calibration.
One-point calibration step (change the K value)
Step 1: put an appropriate amount of distilled water or deionized water into a 1L beaker, turn on the air aeration pump and adjust to the maximum gear, introduce air into the water, about 30 minutes, the 100% oxygen water is prepared;
Step 2: connect the cable to the sensor, remove the rubber protective cap on the front end of the sensor and the sponge in the cap, install a black protective cover, put it into the 100% oxygen water, and insert the RS485 to USB connector connected to the sensor cable into the computer;
Step 3: open the SmartPC software on the computer, click “Language” and select “Chinese”, drop down “Port” and select the corresponding COM port, and then click “Connect”, after connecting the sensor successfully, click “Measure”. According to the actual situation (the default salinity is 0ppt, air pressure is 101.35KPa), modify the values of “Salinity” and “Air Pressure” through the “Get” and “Set” options, and then click “Start” to get the real-time measurement of the percentage of DO, DO and temperature;
Step 4: click “Stop” to end the data measuring, then click “Calibrate”, and click “Get” under the “Manual Calibration” interface to get the initial K and B values of the sensor. Click “Restore” under the “Automatic Calibration” interface, select “OK” in the pop-up window, and then click “Get” to check whether the K and B values are restored to the default values (the default K value is 1, and the default B value is 0).
Step 5: under the “Automatic Calibration” interface, change the “Single/First Point Calibration Value” to 100, click “1 point” to do one-point calibration, wait for the values in the pop-up window to stabilize, and click “OK” to complete the calibration. Click “Get” to check whether the K value is written correctly;
Step 6: click “Start” under the “DO” interface to get the real-time measurement of the percentage of DO, DO and temperature, check that the percentage of DO is close to 100% to verify that the one-point calibration is successful.
Two-points calibration step (change the K and B values)
Step 1: put an appropriate amount of distilled water or deionized water into a 1L beaker, turn on the air aeration pump and adjust to the maximum gear, introduce air into the water, about 30 minutes, the 100% oxygen water is prepared. Put an appropriate amount of distilled water or deionized water into another 1L beaker, stir while adding anhydrous sodium sulfite, until anhydrous sodium sulfite is insoluble and solid crystal is appeared, the 0% oxygen water is prepared;
Step 2: connect the cable to the sensor, remove the rubber protective cap on the front end of the sensor and the sponge in the cap, install a black protective cover, put it into the 100% oxygen water, and insert the RS485 to USB connector connected to the sensor cable into the computer;
Step 3: open the SmartPC software on the computer, click “Language” and select “Chinese”, drop down “Port” and select the corresponding COM port, and then click “Connect”, after connecting the sensor successfully, click “Measure”. According to the actual situation (the default salinity is 0ppt, air pressure is 101.35KPa), modify the values of “Salinity” and “Air Pressure” through the “Get” and “Set” options, and then click “Start” to get the real-time measurement of the percentage of DO, DO and temperature;
Step 4: click “Stop” to end the data measuring, then click “Calibrate”, and click “Get” under the “Manual Calibration” interface to get the initial K and B values of the sensor. Click “Restore” under the “Automatic Calibration” interface, select “OK” in the pop-up window, and then click “Get” to check whether the K and B values are restored to the default values (the default K value is 1, and the default B value is 0).
Step 5: under the “Automatic Calibration” interface, change the “Single/First Point Calibration Value” to 100, change the “Second Point Calibration Value” to 0, click “2 points” to do two-points calibration, wait for the values in the pop-up window to stabilize, and click “OK”. Then put the DO sensor into the 0% oxygen water, wait for the values in the pop-up window to stabilize, and click “OK” to complete the calibration. Click “Get” to check whether the K and B values are written correctly;
Step 6: click “Start” under the “DO” interface to get the real-time measurement of the percentage of DO, DO and temperature, check that the percentage of DO is close to 0%, then put the DO sensor into the 100% oxygen water to get the real-time measurement of the percentage of DO, DO and temperature, check that the percentage of DO is close to 100% to verify that the two-points calibration is successful.
