NO2 Sensor Nitrogen Dioxide Transmitter RS485

Product Details: High Performance Nitrogen Dioxide Sensor

I. Nitrogen dioxide sensor product overview

This high-performance nitrogen dioxide sensor adopts the electrochemical sensor probe specialised in testing nitrogen dioxide concentration as the core detection device, designed for various environmental monitoring and industrial applications. The sensor has a wide measuring range, high accuracy, good linearity, versatility, ease of use, easy installation, long transmission distance and moderate price and other significant features, can provide you with accurate and reliable nitrogen dioxide concentration data.

Second, nitrogen dioxide sensor features

High sensitivity gas detection: adopts imported high sensitivity electrochemical sensor probe to ensure the accuracy and stability of the measurement results.

Wide measurement range: support 0-20ppm nitrogen dioxide concentration measurement, meet the needs of a variety of application scenarios.

High Accuracy: Measurement accuracy reaches ±3% F.S of the reading, ensuring the accuracy of the data.

Fast Response: Response time is less than 15 seconds, capable of quickly capturing changes in gas concentration.

Strong versatility: supports RS485 communication interface, convenient to connect with various PLCs, microcontrollers and other devices.

Easy to use: simple and clear design, easy to operate and maintain.

Convenient installation: compact structure, simple and quick installation process.

Long transmission distance: support long-distance data transmission, convenient for remote monitoring and management.

Parameters of nitrogen dioxide sensor

Probe parameters and selection

This NO2 product provides a variety of probe types for your choice to meet the needs of different application scenarios.

4G type probe: imported electrochemical sensor, range 20ppm, resolution 0.01ppm, life 2 years.

4L type probe: imported electrochemical sensor, range 2000ppm, resolution 0.1ppm, life time 2 years.

The service life of the above probes are measured in the air environment with temperature 23±3℃ and humidity 40±10%RH. The default probe is 4G type probe.

V. Cross-gas anti-interference characteristics

Please note that this sensor may have cross sensitivity to some other gases. The table lists the cross-talk conditions for some gases, but not all. For information on cross-sensitivity to other gases, please contact our technical support. Cross sensitivity will fluctuate ±30% and may vary with sensor life and batch changes. Therefore, it is not recommended to use this sensor to measure other cross-sensitive gases.

Carbon Monoxide: 100ppm, NO2 response 0ppm

Hydrogen Sulphide: 15ppm, NO2 response -2ppm

Sulphur dioxide: 5ppm, NO2 response -2ppm

Nitric oxide: 35ppm, NO2 response 0ppm

Chlorine: 1ppm, NO2 response 0ppm

Ammonia: 100ppm, NO2 response 0ppm

Sixth, the system framework and connection

The NO2 sensor can be used alone or combined with several sensors on a 485 bus.

Individual use: using 12V DC power supply, the device can be directly connected to the PLC with 485 interface, or through the 485 interface chip connected to the microcontroller. The microcontroller and PLC can be programmed to work with the sensor via the modbus protocol specified later. At the same time, the use of USB to 485 can be connected to the computer, the use of our sensor configuration tool for configuration and testing.

FIGURE 1   SINGLE-ENDED

FIGURE 2   MUTIPLE-ENDED

Combined use: Multiple sensors can be combined on a single 485 bus. In the 485 bus combination, please comply with the ‘485 bus field wiring code’ (see appendix). Theoretically, more than 16 485 sensors can be connected to one bus. If more 485 sensors are to be connected, a 485 repeater can be used to expand the number of 485 devices. The other end is connected to the PLC with 485 interface, connected to the microcontroller through the 485 interface chip, or USB to 485 can be used to connect to the computer, the use of my company to provide the sensor configuration tool for configuration and testing.

NO2 Sensor Application Scenario

This high-performance nitrogen dioxide sensor is widely used in environmental monitoring, industrial safety, food processing, health care and other fields, for a variety of need to detect nitrogen dioxide concentration occasions to provide accurate and reliable solutions.

Contact us for more information or to purchase the sensor

For more information or to purchase this product, please contact our customer service team. We will be happy to provide you with quality products and services.

RMZN-3001-NO2-Datasheet.pdf