Aquarium Dissolved Oxygen Sensor Meter Portable Dissolved Oxygen ph Meter Water Oxygen Tester
A portable dissolved oxygen (DO) meter is a device used to measure the concentration of dissolved oxygen in a liquid sample. It is commonly used in various industries, including environmental monitoring, water treatment, aquaculture, and scientific research.
Portable DO meters typically consist of a handheld device with a digital display and a probe or sensor that is immersed in the liquid sample. The probe contains a membrane or electrode that interacts with the dissolved oxygen in the sample, generating an electrical signal that is converted into a readable measurement on the meter's display.
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 |