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PFDO-500
PROBEST
Measurement Principle
Probest Factory Direct Supply PFDO-500 Online Fluorescence Dissolved Oxygen Analyzer, No Oxygen Consumption uses the fluorescence method to measure dissolved oxygen. The top of the sensor is covered with a layer of fluorescent material. When the blue light emitted by the sensor irradiates the fluorescent material, the fluorescent material is excited and emits red light. Because oxygen molecules can take away energy (Quenching effect), so the time and intensity of excited red light are inversely proportional to the concentration of oxygen molecules, and the concentration of dissolved oxygen in water can be obtained by calculation.
Features
² The sensor adopts a new type of oxygen-sensitive membrane, with its own NTC temperature compensation function, and the measurement results have good repeatability and stability
² No oxygen consumption during measurement, no flow rate/agitation requirements
² Breakthrough fluorescent technology, no membrane and electrolyte, basically no maintenance
² Built-in self-diagnosis function to ensure accurate data
² Factory calibration, one year without calibration, can be calibrated on site
² Digital sensor, strong anti-interference ability and long transmission distance
² Standard digital signal output, which can realize integration and networking with other equipment without transmitter
Applications
² DO online monitoring in aquaculture
Technical Specifications
Measuring range | DO: 0-20 mg/L or 0-200% saturation Temp.: 0-45℃ |
Measurement accuracy | DO: ±3% of measured value or ±0.3mg/l, greater one; temp.: ±0.5℃ |
Repeatability | ±0.3mg/l |
Resolution | 0.01mg/l |
Pressure range | ≤0.1Mpa |
Calibration | Air automatic calibration, sample calibration |
Sensor material | SUS316L |
Power supply | AC power:85-500VAC;DC power:9-36VDC |
Relay | Three-way relay, program setting response parameters and response values |
Protocol | MODBUS RS485 |
Temp | Storage: -15 to 60℃ Operating: 0 to 45℃(Not frozen) |
Size | Sensor:Dia.25.0mm*Length 127mm ;Transmitter:145*125*162mm(L*W*H) |
Weight | Sensor:0.3KG;Transmitter:1.35KG With transmitter Output: 3Way 4-20mA |
Protection class | Sensor:IP68/NEMA6P;Transmitter:IP66/ NEMA4X |
Cable length | Standard 10M,Max could be extended to 100M |
Measurement Principle
Probest Factory Direct Supply PFDO-500 Online Fluorescence Dissolved Oxygen Analyzer, No Oxygen Consumption uses the fluorescence method to measure dissolved oxygen. The top of the sensor is covered with a layer of fluorescent material. When the blue light emitted by the sensor irradiates the fluorescent material, the fluorescent material is excited and emits red light. Because oxygen molecules can take away energy (Quenching effect), so the time and intensity of excited red light are inversely proportional to the concentration of oxygen molecules, and the concentration of dissolved oxygen in water can be obtained by calculation.
Features
² The sensor adopts a new type of oxygen-sensitive membrane, with its own NTC temperature compensation function, and the measurement results have good repeatability and stability
² No oxygen consumption during measurement, no flow rate/agitation requirements
² Breakthrough fluorescent technology, no membrane and electrolyte, basically no maintenance
² Built-in self-diagnosis function to ensure accurate data
² Factory calibration, one year without calibration, can be calibrated on site
² Digital sensor, strong anti-interference ability and long transmission distance
² Standard digital signal output, which can realize integration and networking with other equipment without transmitter
Applications
² DO online monitoring in aquaculture
Technical Specifications
Measuring range | DO: 0-20 mg/L or 0-200% saturation Temp.: 0-45℃ |
Measurement accuracy | DO: ±3% of measured value or ±0.3mg/l, greater one; temp.: ±0.5℃ |
Repeatability | ±0.3mg/l |
Resolution | 0.01mg/l |
Pressure range | ≤0.1Mpa |
Calibration | Air automatic calibration, sample calibration |
Sensor material | SUS316L |
Power supply | AC power:85-500VAC;DC power:9-36VDC |
Relay | Three-way relay, program setting response parameters and response values |
Protocol | MODBUS RS485 |
Temp | Storage: -15 to 60℃ Operating: 0 to 45℃(Not frozen) |
Size | Sensor:Dia.25.0mm*Length 127mm ;Transmitter:145*125*162mm(L*W*H) |
Weight | Sensor:0.3KG;Transmitter:1.35KG With transmitter Output: 3Way 4-20mA |
Protection class | Sensor:IP68/NEMA6P;Transmitter:IP66/ NEMA4X |
Cable length | Standard 10M,Max could be extended to 100M |
