1.Principle
KFDO310 integrated on-line fluorescence dissolved oxygen sensor is designed and made based on the quenching principle of excited fluorescence of specific substances in physics. The blue light from the light-emitting diode illuminates the fluorescent material on the inner surface of the fluorescent cap. The fluorescent material on the inner surface is excited and emits red light. By detecting the phase difference between the red light and the blue light, and comparing it with the internal calibration value, the concentration of oxygen molecule can be calculated, and the final value can be output by temperature automatic compensation.
2.Feature
No electrolytes, no polarization
No need to consume oxygen, not affected by the flow rate
Built-in temperature sensor, automatic temperature compensation
Free from chemicals like sulfides
Small drift, fast response, more accurate measurement
Maintenance-free, long service life, lower use cost
Fluorescent caps are easy to replace
RS-485 interface, Modbus-RTU protocol
3.Technical Specifications
| Model number |
KFDO310 |
| Measuring principle |
fluorescence |
| Range |
0ー20 mg/L (0ー200% saturation, 25 °C) |
| Resolution |
0.01 mg/l, 0.1 °C |
| Precision |
± 2% f.s. , ± 0.5 °C |
| Temperature compensation |
Automatic temperature compensation (PT1000) |
| Output mode |
RS-485 bus, Modbus-RTU protocol |
| Working conditions |
0ー45 °C, < 0.2 mpa |
| Storage temperature |
- 5 ~ 65 °C |
| Installation mode |
Immersion mounting |
| Cable length |
5 meters, other length can be customized |
| Power consumption |
< 0.05 W |
| Power supply |
12 ~ 24 VDC ± 10% |
| Protection level |
IP68 |
| Calibration |
Two-point calibration |
| Fluorescent cap life |
Guaranteed Use for one year (under normal use) |
| Material for sensor housing |
Pom and 316L stainless steel |
4.Dimensional Drawing
5.Installation and Electrical Connection
Installs
The temperature sensing part should be immersed below the liquid surface to avoid collision with the film head surface. The head part of the membrane should be free from sediment.
Tips
What is Dissolved Oxygen?
Dissolved oxygen refers to the level of free, non-compound oxygen present in water or other liquids. It is an important parameter in assessing water quality because of its influence on the organisms living within a body of water. In limnology (the study of lakes), dissolved oxygen is an essential factor second only to water itself ¹. A dissolved oxygen level that is too high or too low can harm aquatic life and affect water quality.
Non-compound oxygen, or free oxygen (O2), is oxygen that is not bonded to any other element. Dissolved oxygen is the presence of these free O2 molecules within water.The bonded oxygen molecule in water (H2O) is in a compound and does not count toward dissolved oxygen levels. One can imagine that free oxygen molecules dissolve in water much the way salt or sugar does when it is stirred ².
پیام شما باید بین 20 تا 3000 کاراکتر باشد!
