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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
Online cod turbidity sensor
Model：FT-S1S
Brand：fengtu
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Product details
one. Online cod turbidity sensor working principle
Online cod turbidity sensor is a device that measures the chemical oxygen demand (COD) of solution using ultraviolet absorption without the need for chemical reagents.The sensor uses two light sources for measurement, one for COD measurement and one for turbidity measurement.
Because organic matter dissolved in water absorbs ultraviolet light, the COD value can be measured through the transmittance of the light source, along with turbidity measurement, automatic turbidity compensation, and temperature collection for temperature compensation.
two. Online cod turbidity sensor technical parameters
| Measurement principle | UV254 absorption method dual light source measurement |
| COD range | Default 0~500mg/L, 0~200mg/L can be customized |
| resolution | 0.1mg/L |
| Accuracy | ±5%, ±0.3℃ |
| NTU measuring range | Default 0-400NTU, 0-200NTU can be customized |
| resolution | 0.1NTU |
| temperature compensation | Automatic temperature compensation |
| Self-cleaning function | Equipped with an automatic cleaner to prevent biological adhesion and light window pollution to ensure long-term monitoring stability; the automatic cleaning time and cleaning frequency can be set, and the power consumption is 0.7W |
| Output mode | RS-485 (Modbus/RTU) |
| Storage temperature | -5-+65℃ |
| working environment | 0～50℃,≤0.2MPa |
| Installation method | Submersible installation, 3/4NPT mounting thread |
| Cable length | 5m |
| powered by | DC: 12V-24V |
| Protection level | IP68 |
| Calibration method | Two point calibration |
| Shell material | ABS+316L stainless steel |
three. Online cod turbidity sensor size/installation
1.Online cod turbidity sensor size chart
2.Online cod turbidity sensor wiring diagram
The cable is a 5-core shielded wire:
Red wire - power cord, black wire - ground wire, green wire - 485A, white wire - 485B
3.Online cod turbidity sensor installation
Note: The sensor cannot be installed upside down and must be installed at an angle of at least 15 degrees.
Four. Online cod turbidity sensor maintenance and care
Sensor maintenance:
If the sensor needs to be cleaned, use warm water and an appropriate amount of detergent to clean it.
Notice:
Avoid strong vibrations that may damage the transparent glass in front of the ring, and do not scratch it with hard objects.
five. Online cod turbidity sensor user calibration
The sensor has been rigorously calibrated when it leaves the factory, and generally does not require user calibration. If user calibration is performed, you can execute the factory reset command if you want to restore it.
5.1 Zero point calibration
Integrate the sensor into the container. Use distilled or purified water for the solution. After the value stabilizes for 30 seconds, perform turbidity zero point calibration and COD zero point calibration according to the communication instructions.
5.2 Slope calibration
Integrate the sensor into the solution container. The turbidity value of the solution is known. After the value stabilizes for 30 seconds, perform turbidity slope calibration according to the communication instructions.
Integrate the sensor into the solution container. The COD value of the solution is known. After the value stabilizes for 30 seconds, perform COD slope calibration according to the communication instructions.
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