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Address: i City, No11, TangYan South road, Yanta District, Xi'an,Shaanxi,China.
Contact name:Evelyn Wang
Xi'an Kacise Optronics Co.,Ltd. |
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KFDO900 Dissolved Oxygen Meter Water Quality For Aquaculture Industrial
Product Introduction
Fluorescence method oxygen dissolved meter is based on the quenching principle of specific substances to active fluorescence in physics.The figure as follow is the schematic diagram of the sensor's work. The fluorescent substance at the front of the sensor is a special platinum porphyrin composite with polyester foil allowing gas molecules to pass through, and the surface is coated with a layer of black light-proof material to avoid interference from sunlight and other fluorescent substances in the water.
The modulated blue light shines on the fluorescent material and causes it to excite and emit red light. Since oxygen molecules can carry away energy (quenching effect), the time and intensity of red light excitation are inversely proportional to the concentration of oxygen molecules.We used the red light source synchronized with blue light as the reference, measured the phase difference between the excited red light and the reference light, and compared it with the internal calibration value, so as to calculate the concentration of oxygen molecules, and output the final value through temperature compensation.
Performance characteristics:
● Innovative fluorescence principle, no need to replace the
diaphragm and electrolyte, basic maintenance free;
● No need to replace the fluorescent cap, lower use cost;
● No oxygen consumption, no flow rate and agitation requirements;
● will not be "toxic" because of sulfide, to overcome environmental
interference;
● Free from cross interference of H2S, PH, CO2, NH3, SO4, CL-, CL2,
etc.
● Higher resolution and measurement accuracy;
● The service life of the sensor is up to 5 years;
Apply:
Surface water, industrial sewage and municipal sewage
Q&A
Why is the effect of oxygen filling obviously better in winter than in summer?
The main reason is that the water temperature is lower in winter and the dissolved oxygen saturation is higher. On the contrary, the dissolved oxygen saturation is lower in summer.
Technical Parameters of Fluorescence Dissolved Oxygen Analyzer
| Class | Performance | Parameter |
| Transmitter | Size | 230×185×120mm |
| Weight | 1.5kg | |
| Storage Temperature | -40-60℃ | |
| Temperature | -20-60℃ Avoid direct sunlight | |
| Relative humidity | 5%~85% (no condensation) | |
| Supply | 220VAC±10%,50Hz | |
| Analog output | 4~20mA output or 0~20mA output (dissolved oxygen value or saturation), loop load maximum 750 ohms;Optional temperature 4~20mA output | |
| The relay outputs | 3 relays with A capacity of 220 VAC/ 2 A. The outputs can be set for alarm or timing functions | |
| Protective grade | polycarbonate enclosure, IP65 | |
| Field display | LCD display with backlit | |
| Digital interface | RS232 or RS485 interface, Modbus protocol can be supported. | |
| Sensor | Measurement range | dissolved oxygen: 0.00~20.00mg/ L or 0.00~20.00 PPM air saturation: 0~200% |
| Resolution | 0.01mg/L | |
| The measurement accuracy | ±1%FS or ±0.15mg/L with the largest value | |
| Repeatability | ≤0.2mg/L | |
| Response time | less than 60 seconds | |
| Temperature sensor | Working range: 0~60°C;Resolution: 0.01°C Accuracy: ±0.5°C;Response time: less than 10 seconds | |
| Storage temperature | -20°C ~60°C | |
| Ambient temperature | -20°C ~60°C | |
| Medium temperature | 0℃~50℃ | |
| Maximum mounting depth | 10 m | |
| Chemically adaptation | methanol and ethanol are safe to avoid other organic solvents | |
| Calibratation | Anoxic water and air were used for calibration respectively.It has been calibrated before leaving the factory, and generally there is no need to calibrate. | |
| Anti-interferense | It is not subject to cross interference of H2S, PH, CO2, NH3, SO4, CL-, CL2, CLO2, MeOH, EtOH, and various other ions. | |
| Foil | Polyester embedded with platinum porphyrin fluorescence | |
| Light-proof coating | teflon | |
| Foil life | up to 5 years (10 second measurement interval) | |
| Sensor shell size | 45 x 100 Φ | |
| Weight | 1.2 kg | |
| Cable standard | 10 meters | |
| Sensor shell | stainless steel |
Ordering Information selection table
| Ordering Information selection table | ||||
| KFDO900 | Fluorescence Dissolved Oxygen Meter | |||
| Power supply | ||||
| DC24V | ||||
| AC220V | ||||
| Cable length | ||||
| 10m | ||||
| 15m | ||||
| 20m | ||||
| 30m | ||||
| Signal output | ||||
| Only 4-20mA | ||||
| Only 485 | ||||
Also with 4-20mA , 485 signal output
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| Special custom signal | ||||
| KFDO900- | AC220V | 10m | Only 485 | with AC220V adapter, cable between host and sensor,The cable length
is 10 meters, the sensor is equipped without temperature
compensation, and is equipped with only 485 communication signal
output.
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Contact us
Website: www.kacise.com
Phone: +86-17719566736
Email: sales@kacise.com
Location: Tangyan South Road, High-tech Zone, Xi'an City, Shaanxi
Province, China
