Cheap Digital Aquarium Dissolved Oxygen ppm Meter Factory Price Aeration Tank DO Meter
An optical DO (Dissolved Oxygen) meter is a device commonly used in aquaculture to measure the amount of oxygen dissolved in water. This measurement is crucial for monitoring the health and well-being of aquatic organisms. An optical DO meter utilizes optical sensors to measure the luminescence decay of a special fluorescent dye. The decay of the dye is related to the concentration of dissolved oxygen in the water sample. Make sure to compare different models and brands, read reviews, and consult with experts or other aquaculture professionals to find the best optical DO meter for your specific needs in aquaculture.
Product Description
The handheld device can be used for monitoring of dissolved oxygen, temperature and PH in water, and can meet the requirements of portable accurate water quality measurement.

Signal output: RS-485
The screen uses a custom backlight, which can display dissolved oxygen, temperature, PH, and a real-time clock.
Manual calibration of salinity, air pressure, and KB value to ensure accurate measurement value.
Features
* 0-20mg/L or 0-200% saturation
* 0~50 °C; IP68 protection level
* No film, no electrolyte, no polarization
* No need to consume oxygen, no flow rate
* Built-in temperature sensor, automatic temperature compensation
* Free from chemical interferences such as sulfides
* Small annual drift, fast response, and more accurate measurement
* Free of maintenance, longer application cycle and lower cost of use
* Fluor cap replacement is simple
*Support RS-485, MODBUS protocol
Model | Fluorescent dissolved oxygen sensor |
Measuring Range | 0-20mg/L or 0 ≤ 200% saturation |
Response time | 3min |
Precision | ± 1% |
Sensor drift | <1% per year |
Temperature range | 0~50℃ |
Temperature precision | ± 0.5℃ |
Calibration method | One or Two-point calibration |
output method | RS-485 (Modbus/ RTU ) |
Temperature sensor | NTC |
Housing diameter | 22mm |
Housing length | 188.3 |
Cable length | 10 m, in addition to the customer, 5 m, 15 m and 30 m cables. |
Power consumption | < 0.5 W |
power supply | DC6~12v +/-5%, current<50mA |
Protection level | IP68 |
Housing Material | POM |