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ZONEWU SO2 Gas Transmitter
ZONEWU SO2 Gas Transmitter ZONEWU SO2 Gas Transmitter ZONEWU SO2 Gas Transmitter ZONEWU SO2 Gas Transmitter ZONEWU SO2 Gas Transmitter ZONEWU SO2 Gas Transmitter

Long lifetime RS485 Electrochemical SO2 Gas Sensor

The ZW-SO2 RS485 SO2 Gas Transmitter supports a wide voltage supply of 10-30VDC and has a power consumption of only 0.18W. It enables accurate measurement of SO₂, temperature, and humidity, with a default SO₂ range of 0-20.00ppm and a resolution of up to 0.1ppm. Featuring dual RS485/analog outputs, it operates stably at -20~50℃, resists condensation, and is ideal for SO₂ concentration monitoring in various industrial and environmental protection scenarios.

  • Model No.:

    LW306D-SO2(RS485)

  • Use:

    Sulfur Dioxide monitoring

  • Power Supply:

    10~30VDC

  • Certificates:

    CE,ROHS

  • Customized Support:

    OEM, ODM

  • Warranty:

    1 Year
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  • Product Detail

ZONEWU RS485 Sulfur Dioxide(SO2) Transmitter



Key Applications & Use Cases
Power Plant Flue Gas SO2 Detection: Our Power plant flue gas SO2 detector, built with an Electrochemical Gas Sensor, is ideal for coal-fired power plant emission monitoring and desulfurization system efficiency evaluation. This RS485 gas sensor delivers real-time SO₂ concentration readings across a 0-20.00ppm range, while simultaneously tracking temperature (-40℃~80℃) and humidity (0~100% RH). The sensor’s lifespan of >2 years ensures long-term stability, and its RS485 ModBus RTU output integrates seamlessly with environmental monitoring platforms for compliance reporting.
Industrial SO2 Monitoring: As a dedicated Industrial SO2 monitoring sensor, this device uses an Infrared absorption SO2 gas sensor to deliver precise measurements for smelting workshops, chemical production exhausts, and boiler flue gas discharge. The compact design and 10-30VDC wide voltage supply support multi-point networking, and it operates reliably in -20~50℃ temperatures and 15~90% RH humidity (anti-condensation), providing early alerts for excessive emissions to safeguard ecological safety.
Environmental Emergency SO2 Early Warning: This SO2 Gas Sensor is engineered for rapid deployment in chemical park perimeter monitoring and atmospheric quality emergency response. Its proprietary compensation algorithm maintains accuracy even in high-humidity environments, and the ModBus RTU protocol enables remote data transmission. With robust anti-interference performance and a stable RS485 data output, it connects seamlessly to emergency alarm systems, making it a critical tool for toxic gas leakage early warning.



SO2 Sensor Specification:

RS485 SO2 Transmitter

Model

ZW-SO2

Power supply

10-30VDC

Average power consumption

0.18W

Temperature 

measurement
range

 

-40℃~80℃

Temperature
accuracy

±0.5℃(25℃)

Humidity
measurement
range

0~100%RH

Humidity
accuracy

±3%RH (60%RH, 25℃)

SO2 measurement
range

0~20.00ppm
（default）

SO2 Resolution

20ppm: 0.1ppm
2000ppm: 1ppm

Operating
temperature

-20~50℃

Working

humidity

 

15~90%RH without condensation

Repeatability

≤2%

Stability

≤2% signal
value/month

Detection accuracy

±5%FS or ±10%

Output signal

RS485/Analog

Response time

20ppm:≤45S, 2000ppm:≤70S





Packaging:

Single gross weight: 0.600 KG

Single package size: 23X20X5 cm

 



Application: 

The High precision SO2 gas sensor also widely used for gas monitoring of Chemical production, Ward monitoring, Vegetable greenhouse, Livestock and poultry farms, Tunnel monitoring, Cold chain logistics vehicle, Cold storage monitoring, Biosafety laboratory.

 

Certifications：

We are best gas sensor manufacturer and exporter in China with more than 10 years. Our SO2 gas sensor products are certified  with of CE, ROHS.

 

 

Production Process:

 


Why choose us:

1. Strong R & D: 30+ Senior experts and highly educated personnel formed a R & D team, heavy investment, master a number of core technologies and patents.
2. Professional and effective solutions: for smart environmental protection, agriculture and other fields, to provide customized compound networking solutions.
3. Full range of products: covering the whole industry chain products from data collection to platform services to meet diverse needs.
4. Excellent quality: we have perfect quality control system, strictly quality control each production link, low defective rate. 
5. Good service: 7×24 hours fast response, Professional pre-sale, sale, after-sales team support.

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