PCS4773D Digital Dissolved Oxygen Sensor(Diaphragm Electrode Method)

Name: PCS4773D Digital Dissolved Oxygen Sensor(Diaphragm Electrode Method)
Brand: Pokcenser Automation Technology Company Limited

PCS4773D uses a replaceable membrane electrode for 0–20 mg/L dissolved-oxygen measurement, providing ±1% F.S. accuracy, temperature compensation, IP68 protection and Modbus output for continuous monitoring.

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Applications

General aqueous solutions
Drinking-water monitoring
Environmental sewage monitoring
River and lake water quality
Wastewater treatment processes
Remote water-quality stations

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Key Features & Advantages

Polarographic Membrane Measurement

Polarographic diaphragm-electrode technology measures dissolved oxygen through a membrane-cap structure for continuous online water monitoring.

Dual DO Measuring Ranges

Measures 0-20 mg/L dissolved oxygen and 0-200% saturation to cover general water-quality and process-monitoring duties.

±1% F.S. Measurement Accuracy

High ±1% F.S. accuracy supports reliable dissolved oxygen measurement for process control, compliance checks and remote monitoring.

Integrated Temperature Compensation

Built-in temperature measurement and compensation help maintain consistent dissolved oxygen readings when water temperature changes.

Rugged IP68 Digital Design

POM and 316 stainless-steel construction with IP68 sealing protects the sensor, while Modbus communication supports stable long-distance remote monitoring.

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PCS4773D Digital Dissolved Oxygen Sensor(Polarography)-Datasheet-POKCENSER

Sep 08, 2026

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Technical Data

Model	PCS4773D
Power supply	9~36VDC
Output	RS485 MODBUS RTU
Measuring method	Polarography(diaphragm electrode method)
Shell material	POM + 316 stainless steel
Waterproof grade	IP68
Measurement range	0-20mg/L, 0-200%
Measurement accuracy	±1%F.S
Pressure range	≤0.3Mpa
Temperature compensation	NTC10K
Temperature range	0-50℃
Calibration	Oxygen-free water calibration, air calibration
Connection method	4-core cable
Cable length	10m cable as standard (Customizable max 100m)
Installation thread	NPT3/4" + 1" rear thread
Scope of application	General application, drinking water, environmental sewage, river and lake water quality

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