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RS485 MODBUS-RTU CH4 Sensor Explosion-Proof Industry

ZONEWU the methane transmitter designed by our company has strong safety, fast response speed, and strong anti-interference ability. After our company's unique compensation algorithm and multi-stage standard gas calibration, it also has the characteristics of long life, high precision, high repeatability, and high stability. Suitable for real-time monitoring of methane concentration in underground pipe galleries, underground parking lots, public toilets, garages, workshops, chemical plants, greenhouse farms, and other places.

The device adopts a wide voltage 10-30V DC power supply, 485 signal output, standard ModBus RTU communication protocol, ModBus address can be set, baud rate can be changed, and the communication distance is up to 2000 meters.

  • Model No.:

    LW302D-CH4(RS485)
  • Use:

    CH4 monitoring
  • Power Supply:

    5~28VDC
  • LoRaWAN Mode:

    OTAA Class A/C (Default: Class C)
  • Shell Material:

    ABS
  • Certificates:

    CE,ROHS,FCC,ISO and 11 patents certifications
  • Customized Support:

    OEM, ODM
  • Warranty:

    1 Year
  • Product Detail

RS485 MODBUS-RTU CH4 Sensor Explosion-Proof Industry



ZONEWU Methane Transmitter: Industrial-Grade Gas Detection Solution

  •  Core Performance Advantages

1.Unmatched Safety & Responsiveness: Boasts strong safety protection, lightning-fast response speed, and exceptional anti-interference ability, ensuring no missed alerts or false alarms even in complex environments.

2.Precise Measurement: Realized through ZONEWU’s proprietary compensation algorithm and multi-stage standard gas calibration, delivering pinpoint-accurate methane concentration data every time.

3.Stable Performance:Resists temperature drift, humidity fluctuations, and electromagnetic interference; maintains consistent operation in harsh industrial conditions.

4.Low Energy Consumption: Optimized power design reduces energy draw, perfectly suited for long-term use in 24/7 continuous monitoring scenarios.

5.Extended Service Life:The combination of calibration technology and compensation algorithm enhances durability, supporting prolonged deployment without frequent maintenance.

  •  Versatile Application Scenarios

1.Confined spaces: Underground pipe galleries, underground parking lots, enclosed garages

2.Public facilities: High-traffic public toilets

3.Industrial sites: Manufacturing workshops, chemical plants

4.Agricultural settings: Greenhouse farms

  • Flexible Power & Communication

1.Wide Voltage Input: Supports 10–30V DC power supply, compatible with most industrial power systems.

2.Standard Communication Protocol: Equipped with 485 signal output and standard ModBus RTU protocol for seamless integration with SCADA/IoT systems.

3.Customizable Settings: ModBus address and baud rate can be adjusted according to on-site network requirements.

4.Long-Distance Transmission: Max communication distance up to 2000 meters, ideal for large-scale remote monitoring.


 

CH4 Sensor Specification:


Item

Content

Power Supply

5~28VDC

Weight

120g

Operating Emperature

-20℃~60℃

Measuring Principle

Principle of Non Dispersive Infrared (NDIR)

Measuring Range

CH4:0~100% LEL

Resolution Ratio

CH4:1%LEL

Temp.and Humi. Sensor

 

Temp Range:-40~+80 ℃

Accuracy:±0.3 ℃

Humi Range:0~99.9 %RH

Accuracy:±2 %RH

Lifespan

> 5 years

Data update time

2s


Packaging:


Single gross weight: 0.600 KG

Single package size: 23X20X5 cm



Product Description: 






Application: 


Our high-precision CH₄ sensor is engineered for versatile gas monitoring applications across diverse industries, including:

  • Chemical production facilities
  • Hospital wards
  • Vegetable greenhouses
  • Livestock and poultry farms
  • Tunnel construction & operation sites
  • Cold chain logistics vehicles
  • Cold storage warehouses
  • Biosafety laboratories



applications of NO2 sensor



Certifications:


Decade-Long Expertise & Market Status

1.A top-tier Chinese gas sensor manufacturer and exporter with 10+ years of industry experience, built on a foundation of technical innovation and customer-centric service.

2.Has established a stable global sales network, serving clients across oil and gas, mining, smart agriculture, and smart city sectors worldwide.

3.Committed to continuous R&D investment to optimize sensor accuracy, durability, and cost-effectiveness for diverse application scenarios.

 

 Certified CH₄ Sensor Advantages

1.Our methane (CH₄) sensors are awarded dual CE and RoHS certifications, a testament to their compliance with EU’s rigorous product safety and environmental norms.

2.Certification eliminates market access barriers for international clients, ensuring product legality and reliability in target regions.

3.Certified sensors guarantee consistent performance, reducing operational risks for end-users in hazardous gas monitoring environments.



Production Process:



factory of gas sensor manufacturer



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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