Product Center
-
Hydrological equipment monitoring station
-
Water Quality Monitor Sensor
-
Plant protection equipment
-
Food Testing Equipment
- Solar-Powered Water Level Monitoring System Utilizes Microwave Radar Technology for Non-Contact Hydrological Observation
- Tubular Soil Moisture Monitor Simultaneous Measurement of Soil Moisture, Temperature, and Conductivity at Multiple Depths
- Groundwater level monitoring Utilizing Integrated Molding Technology to Ensure Stable Deep-Well Measurement
- Agricultural monitoring equipment Remote Management of Agricultural "Four Conditions" via IoT Sensors
- Water Level Measurement Features Triple-Layer Lightning Protection and High-Tensile Steel-Wire Cabling
- Crop Monitoring and Scouting Integrated Online Monitoring System for Soil Moisture, Pest Activity, Crop Growth, Disaster Conditions, and Spores
Shandong Fengtu IOT Technology Co., Ltd
Sales Manager：Ms. Emily Wang
Tel, Whatsapp：+86 15898932201
Email：info@fengtutec.com
Add：No. 155 Optoelectronic Industry Accelerator, Gaoxin District, Weifang, Shandong, China
Biochemical oxygen demand sensor
Model：FT-S18S
Brand：fengtu
Get a Free Quote
Product details
1．Biochemical oxygen demand sensor Working Principle
Biochemical oxygen demand sensor uses optical measurement principles to monitor the biological oxygen demand in water bodies in real time and accurately.Biochemical oxygen demand sensor employs a dual-light source for measurement: one for COD and one for turbidity.
Because dissolved organic matter in water absorbs ultraviolet light, the COD value can be measured by the transmittance of the light source. The turbidity measurement function automatically compensates for turbidity. Simultaneously, temperature is collected for temperature compensation. The BOD value is calculated from the COD value.
2．Biochemical oxygen demand sensor Technical parameters
| Measurement principle | UV254 absorption method Dual-source measurement |
| COD range | Default 0 to 1000 mg/L |
| BOD range | Default 0 to 400 mg/L |
| Resolution | 0.1mg/L |
| Precision | ±5%, ±0.3℃ |
| NTU Range | Default 0-400NTU |
| Resolution | 0.1NTU |
| Temperature compensation | Automatic temperature compensation |
| Self-cleaning function | Equipped with an automatic cleaner to prevent biofouling and light window contamination, ensuring stable long-term monitoring; the automatic cleaning time and frequency can be set, with a power consumption of 0.7W. |
| Output method | RS-485 (Modbus/RTU) |
| Storage temperature | -5-+65℃ |
| Work environment | 0～50℃,≤0.2MPa |
| Installation method | Immersion mounting, 3/4 NPT mounting thread |
| Cable length | 5m |
| Power supply | DC: 12V-24V |
| Protection level | IP68 |
| Calibration method | Two-point calibration |
| Case material | ABS+316L stainless steel |
3．Biochemical oxygen demand sensor Size/Installation
1.Biochemical oxygen demand sensor Dimensions
2.Biochemical oxygen demand sensor Wiring Diagram
The cable is a 5-core shielded cable:
Red wire—Power wire; Black wire—Ground wire; Green wire—485A; White wire—485B
3. Biochemical oxygen demand sensor Installation
Note: The sensor must not be installed upside down; it should be installed at an angle of at least 15 degrees.
4．Biochemical oxygen demand sensor Maintenance and Care
Sensor Maintenance:
If the sensor needs cleaning, use warm water and a suitable amount of detergent.
Caution:
Avoid strong vibrations that could damage the front transparent glass. Do not scratch it with hard objects.
5．Biochemical oxygen demand sensor User Calibration
The sensor undergoes rigorous calibration at the factory and generally does not require user calibration. If user calibration was performed, the factory reset command can be executed to restore it.
5.1 Zero-Point Calibration
Immerse the sensor in a container using distilled or purified water. After 30 seconds of stable readings, perform turbidity and COD zero-point calibrations according to the communication commands.
5.2 Slope Calibration
Immerse the sensor in a solution container with a known turbidity value. After 30 seconds of stable readings, perform turbidity slope calibration according to the communication commands.
Immerse the sensor in a solution container with a known COD value. After 30 seconds of stable readings, perform COD slope calibration according to the communication commands.
This paper addresses：https://fengtusz.com/Water-Quality-Sensors/Biochemical-oxygen-demand-sensor.html
- Previous Article ：water temperature sensor
- Next Article：no more
Related article
-
GNSS Monitoring Systems: From Navigation to Precision Monitoring in Geological and Civil Engineering
2025-10-09 -
Fully automated agrometeorological stations for modern management
2024-05-06 -
What are the intelligent soil weather devices? Manufacturers' Recommendations
2024-07-10 -
Integrating High-Tech into Green Fields: The Role of Agricultural Weather Stations in Modern Farming
2024-09-13 -
Weather monitoring station manufacturers recommended
2024-04-12 -
Water and Fertilizer Machine Manufacturer Recommendation
2024-07-26 -
Soil Conductivity Meter: A Multifunctional Tool for Precision Soil Monitoring
2025-06-30 -
Soil Moisture Monitor: Guiding Farmers to Master Wheat Field Moisture Management
2024-12-02
