The online fluorescence method dissolved oxygen electrode 316L sensor is a high-precision monitoring device independently developed by Shanghai Botuo. It uses fluorescence phase detection technology and self-developed algorithms, does not require chemical reagents, and has stable and sensitive measurement. Covering oxygen concentrations of 0-25mg/L and saturation levels of 0-250%, with an accuracy of; #177; 0.1mg/L（0-10mg/L）， Supports Modbus RS485 communication, IP68 waterproof, suitable for chemical, biopharmaceutical, sewage treatment and other scenarios, easy maintenance and long service life.
Online Fluorescence Dissolved Oxygen Electrode 316LThe core advantages of sensors lie in the absence of reagent pollution, high precision, and strong adaptability. With independent intellectual property rights in sensing membrane technology, fluorescence phase algorithm, and electronic system, it has become an ideal choice for multi industry water quality monitoring.
Measurement performanceOxygen concentration range 0-25mg/L (customizable up to 50mg/L), saturation 0-250%; The working temperature is 0-55 ℃, the storage temperature is -20-80 ℃, and the working atmospheric pressure is 500-1500mbar. Accuracy subdivision range: 0-10mg/L is ± 0.1mg/L or ± 1%, 10-25mg/L is ± 0.3mg/L or ± 3%, temperature measurement accuracy is ± 0.2 ℃.
Response and ProtectionT90 response time<60 seconds (25 ℃), T95<90 seconds, T99<180 seconds; Fixed installation with a waterproof rating of IP68, capable of sinking up to a maximum depth of 10 meters underwater, suitable for complex water environments.
Compensation and Power SupplySupport temperature (0-55 ℃ automatic), atmospheric pressure (500-1500mbar manual/program), salinity (0-55ppt manual/program) compensation; The power supply is compatible with 9-36V DC, with a standard power consumption of 6mA (12V power supply), and the standard wire is 10 meters (customizable).
Environmentally friendly design without reagentsUsing fluorescence principle for measurement, no electrolyte or chemical reagents need to be added, avoiding secondary pollution and reducing maintenance costs. It is suitable for scenarios that require high water cleanliness, such as biomedicine and drinking water.
Intelligent compensation and calibrationBuilt in multi parameter compensation mechanism ensures measurement accuracy under different temperature, pressure, and salinity environments. Flexible calibration methods: One point calibration (100% saturation, covered with air or clean water cloth), two-point calibration (0% anaerobic water+100% saturated water), easy to operate, supports quick on-site calibration.
Durable structure and long lifespanThe membrane cap is made of POM+PMMA material, and the shell is made of corrosion-resistant PPS; The service life of the fluorescent film cap can reach 2 years under normal maintenance, reducing the frequency of replacement; The structural design is compatible with NPT3/4 interface and easy to install.
Calibration process：
100% saturation calibration: The constant temperature water bath is exposed to air for 15 minutes, and the sensor is immersed until the reading fluctuation is ≤ ± 0.05mg/L before saving the data;
0% saturation calibration: The sensor is immersed in oxygen free water or nitrogen saturated water, and the reading is saved after it stabilizes;
On site simple calibration: Rinse the membrane cap with clean water and cover it with a damp cloth. If the fluctuation is less than 0.3mg/L within 2 minutes, it can be completed.
routine maintenance：
Membrane cap: Check the cleanliness every month, rinse with clean water and wipe with a soft cloth to avoid scratching by hard objects; It is recommended to replace it after more than 1 year of use, and recalibration is required after replacement;
Shell and wire: Rinse with clean water and wipe with a soft cloth to prevent dirt accumulation from affecting the measurement.
Adopting Modbus RTU protocol, default parameters: baud rate 9600 (optional 4800/19200, etc.), data bits 8, no checksum, stop bit 1, default device address 3. Core register function:
Reading Class: Dissolved Oxygen Value (1000, mg/L), Saturation (1002,%), Temperature (1004, ℃), Slope (1006);
Reading and writing categories: deviation values (1008, -20-20mg/L), salinity (1010, ppt), atmospheric pressure (1012, mbar);
Settings: baud rate (1016), slave address (1017), response time (1018, 2-60s), calibration instructions (1020, 0%/100% calibration, restore default/factory parameters).
Widely used in chemical reaction tanks, biopharmaceutical fermentation tanks, nuclear power circulating water, sewage treatment plants, smart aquaculture and other scenarios, real-time monitoring of dissolved oxygen concentration in water bodies provides reliable data support for process optimization and water quality standards.
