product name :PMDO-500 Membrane Method Dissolved Oxygen Online Analyzer
PMDO-500 Dissolved Oxygen Sensor is a type of polarographic type sensor.It adopts titanium alloy outer tube and has strong corrosion resistance and wide range of application.PTFE thick-film breathable material and super-thick silver anode ensure the longer life time of the electrode.Meanwhile,it adopts replaceable membrane head component which is convenient for daily maintenance and ensures the accuracy of measurement.
Application:
Widely used in oxygen content monitoring of water conditioning,hydrologic monitoring,wastewater treatment,swimming pool,fishpond,fertilizer,chemical and biological and etc.
Technical Specification：
| Principle | Polarographic membrane method |
| Measurement range | 0-40 mg/L |
| Accuracy | ±3% |
| Temperature compensation | 0 – 60 ℃ Automatic temperature compensation
NTC22KΩ Temperature compensation |
| Electrode working pressure | 0-4 bar |
| Response time | Response more than 90% of the value within 60s |
| Calibration | Air automatic calibration,sample calibration |
| Compensation | Automatic temperature compensation,manual salinity and atmospheric pressure compensation |
| Power supply | AC:100~240VAC 5W
DC:9~36VDC 5W |
| Output | 1-way isolated 4-20mA |
| Communication protocol | MODBUS RS485 |
| Minimum flow rate | 0.05 m/s |
| Electrode working temperature | 0 – 60 ℃ |
| Electrode dimensions | Dia 13mm*L 130mm |
| Electrode materials | Titanium alloy outer tube |
| Cable length | Standard 5m cable |