RS485 Modbus Digital Fluorescence Dissolved Oxygen Analyzer PFDO‑800, 4‑20mA Output Online DO Instrument Controller with Temp Sensor Probe for Aquaculture Seawater Freshwater, China Manufacturer
Product Description
PFDO-800 Dissolved Oxygen Online Analyzer
Measurement Principle
PFDO-800 Dissolved Oxygen analyzer adopts fluorescence method to measure dissolved oxygen. The cap of the sensor is coated with a luminescent material. Blue light from an LED illuminates the luminescent chemical. The luminescent chemical instantly becomes excited and releases red light. The time and intensity of red light are inversely proportional to the concentration of oxygen molecules, So the concentration of oxygen molecules is calculated.
Features
The sensor adopts new type of oxygen sensitive membrane, with NTC temperature compensated function, whose measurement result has good repeatability and stability.
Won't produce oxygen consumption when measuring and no requirement of flow rate and stirring.
Breakthrough fluorescence technology, without membrane and the electrolyte and almost no maintenance.
Built-in self-diagnosis function to ensure the accuracy of data.
Factory calibration, no calibration required for one year and can carry out field calibration.
Digital sensor, high anti-interference capability and long-distance transmission .
Standard digital signal output can achieve integration and networking with other equipment without controller.
Plug-and-play sensor, quick and easy installation.
Measurement range | DO:0-20 mg/L or 0-200% saturation;Temperature:0-45℃ |
Measurement Accuracy | DO:±3% or ±0.3 mg/L, the bigger one;Temperature:±0.5℃ |
Resolution | 0.01mg/L |
Repeatability | ±0.3mg/L |
Pressure range | ≤0.3Mpa |
Calibration | Air automated calibration, sample calibration |
Main material | Body:SUS316L(fresh water),Titanium alloy(Ocean marine); Cover:PPS+ glass fiber;Cable:PUR |
Power supply | AC:85-500VAC;DC:9-36VDC |
Output | 3-channel 4-20mA output |
Relay | 3 relay outputs, programmed parameter & value response. |
Communication protocol | MODBUS RS485 |
Storage temperature | -15-60℃ |
Measuring temperature | 0-45℃(Non-freezing) |
Dimensions | Sensor:Dia49.5mm*L 251.5mm,Transmitter:145*125*162mm(L*W*H) |
Weight | Sensor:1.4KG;Transmitter:1.35KG |
Protection Rating | Sensor:IP68/NEMA6P;Transmitter:IP66/ NEMA4X |
Cable length | Standard:10m, the maximum may be extended to 100m |
Technical Specifications