Dissolved Oxygen Sensor

Dissolved oxygen (DO) comes from two main sources: the atmosphere and photosynthesis. Most aquatic organisms require DO to survive and it is important for chemical processes in aquatic environments. Dissolved oxygen probes work by measuring the amount of oxygen that diffuses across a permeable (or semi-permeable) membrane into a probe (sensor). Once oxygen is inside the sensor, a chemical reduction reaction occurs, producing an electrical signal. This signal is read by the DO probe and is displayed on a meter. Pokcenser provide two categories of dissolved oxygen sensors: optical and polarographic. DO sensor for fish farming is so important.

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Pokcenser Automation Technology Co., Ltd

Mobile: +86 181 7515 5326

Email: info@pokcenser.com

Tel: +86-731-8229 9492

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PCS7820D Digital Turbidity Sensor

Features

Measuring method 90° infrared
0.01—400 NTU measuring range
Installation immersed or threaded
Shell material: POM + 316 stainless steel

Applications

General application
Drinking water
Environmental sewage
River and lake water quality
Food, tap water
Electroplating
Paper making

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Advantages

High accuracy ±5%F.S.
IP68 water proof
Digital sensor, strong anti-interference ability, high stability, long transmission distance.

The digital turbidity sensor with modbus protocol is a waterproof turbidity sensor for field use, it can be either submerged or flow-through installed. We provide turbidity meter with multiple ranges 0-400NTU, 0-2000NTU, 0-4000NTU.

Resources

Datasheet

File Name	Time	Type	Download
PCS7820D Digital Turbidity Sensor	Sep 28, 2025	PDF

Technical Parameters

Model	PCS7820D
Power supply	9~36VDC
Output	RS485 MODBUS RTU
Measuring method	90° infrared
Shell material	POM + 316 stainless steel
Dimension	Φ50*235mm
Waterproof grade	IP68
Measurement range	0.01—400 NTU
Measuring Minimum value	0.5NTU
Measurement accuracy	±5%F.S
Pressure range	≤0.2Mpa
Temperature range	0-45℃
Calibration	Sample calibration, standard solution calibration
Connection method	4-core cable
Cable length	10m cable as standard (Customizable max 100m)
Installation thread	G3/4'' rear thread
Scope of application	General application,river and lake water quality

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