Factory price for High Accuracy DO Meter Portable Dissolved Oxygen Meter
Basic handheld dissolved oxygen meters can cost around $100 to $300. They have a simple interface and are suitable for applications that require occasional measurements.
More advanced models with additional features, such as data logging, automatic calibration, and digital interfaces, can cost up to $1,000 or more. These models are suitable for applications that require more precise measurements, such as in scientific research or wastewater treatment plants.
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 |
