Air Pressure Sensors,Co2 Sensors For Agricultural Meteorological Stations

Air Pressure Sensors,Co2 Sensors For Agricultural Meteorological Stations

China, being an agricultural giant with a vast population, has an immense demand for crops like grains, fruits, and vegetables. However, the diverse natural and social conditions between the northern and southern regions have challenged traditional farming methods. 

To meet the current agricultural demands, the continuous development of greenhouse cultivation and the Internet of Things (IoT) technologies have made agricultural weather stations increasingly relevant.

The Impact of Weather on Agriculture

Weather significantly impacts agricultural production, and in recent years, extreme weather events have posed serious threats to crop yields. To effectively respond to meteorological changes and enhance disaster monitoring and early warning capabilities, applying weather station equipment in the agricultural sector becomes crucial. 

Small-scale agricultural weather stations can provide essential meteorological data, such as temperature, humidity, wind direction, wind speed, solar radiation, rainfall, air pressure, and light intensity, offering invaluable insights for crop growth.

Modernizing Agricultural Weather Stations

In the past, monitoring each weather element required separate instruments, which was quite cumbersome. However, modern small-scale weather stations now comprise an integrated weather observation system, incorporating a power supply system, various gas sensors, a main data collector, fixed supports, and more. This streamlined system can measure multiple weather parameters with just one instrument, making it simple and effective.

Benefits of Sensor Integration in Agricultural Weather Stations

Integrating these sensors in agricultural weather stations allows for collecting various environmental indicators, including temperature, humidity, CO2 concentration, soil temperature, soil moisture, and light intensity. This data can be analyzed and processed through IoT sensor technology to aid farmers in optimizing crop yields and quality. 

Furthermore, agricultural experts can access relevant information about crop growth from these weather stations. By analyzing this data, they can offer practical solutions to issues that arise during the cultivation process.

Integration of Sensors in Agricultural Weather Stations

One of the key features of agricultural weather stations is the integration of various sensors, including carbon dioxide (CO2), temperature and humidity, pressure, and wind speed sensors, among others.

Setra Pressure Sensor 278:

Setra’s Model 278 is the ideal solution for measuring barometric pressure for remote environmental applications. The 278 is designed using the SETRACERAM™ ceramic sensor, enabling it to meet stringent accuracy requirements over wide operating temperatures in remote applications.

The small footprint and removable terminal block on the 278 makes installation fast and easy. The 278 is ideal for solar-powered applications because of its low power consumption and sleep mode feature. Under normal operation, this feature minimizes current draw when readings are not being taken.

Designed for remote sensing applications

The Model 278 pressure transducer is designed to be used in remote applications that require low power consumption. Its sleep mode feature allows for instant startup and fast readings.

Improved performance with ceramic sensor

The 278 utilizes a variable capacitance sensor that is made using ceramic material fused together with glass and gold to form the SETRACERAM™ pressure element. This stable material and design offer class-leading thermal performance and low hysteresis, allowing it to be integrated into demanding installations. The ceramic sensor enables improved performance compared to other stainless steel sensors, enabling the 278 to give accurate measurements and better test results.

Flexibility in installation

The Model 278 is designed with a compact footprint for quick installation. The removable terminal block provides easy wiring. Its mounting holes are designed to fit industry-standard grid systems to maximize the use of panel space while minimizing your time at the job site.


• Long-term stability: 0.1 hPa/mB per year

• Sleep mode for instant startup

• Removable terminal strip module for easy wiring

• Footprint configured for easy drop-in replacement

• Calibration NIST traceable

• Wide operating voltage 9.5 to 28 VDC

• Meets CE conformance standards

• Ideal for automated weather stations

• Low power consumption

• Relied on for severe weather detection


• Automated Weather Stations (AWS)

• Data Buoys and Ships

• Agriculture Metrology System

• AWOS/ASOS Systems

• High Accuracy Barometric Pressure Measurement

SOHA CO2 Sensor Module SH-NDC:

The South Korean SOHA CO2 sensor module utilizes the dual-wavelength nondispersive infrared (NDIR) principle to detect CO2 concentration levels ranging from 0 to 3000ppm / 5000ppm / 10000ppm. Its ability to withstand high humidity levels ensures accurate CO2 monitoring in various agricultural settings.

Humirel Analog Voltage Output Temperature and Humidity Sensor Module HTG3515CH:

HTG3515CH is a temperature and humidity sensor module based on Humirel’s humidity-sensitive capacitor. It is designed for OEM customers who require a reliable and precise measurement solution. The module comes with a built-in microcontroller and provides a linear voltage output for humidity and a 10Kohm NTC temperature output. HTG3515CH is suitable for mass production and applications that demand high measurement accuracy.

Key Parameters :

1) Relative humidity range: 0% to 100% RH

2) Accuracy: ±3% RH

3) Operating temperature range: -40°C to 110°C

4) Response time: 5 seconds

5) Hysteresis: 0 ± 1% RH

6) Power supply: 5V DC

7) Output voltage: 1V to 3.6V

8) Dew resistance


The HTG3515CH sensor module finds applications in various fields, including air conditioning, HVAC systems, refrigerators, weather stations, power stations, communication rooms, incubation rooms, curing rooms, and drying cabinets, among others.

 Key Features :

  • – Environmentally friendly product
  • – Full-scale interchangeability
  • – High reliability and long-term stability
  • – Accuracy: +/-3% RH @ 55% RH
  • – Requires power supply within the specified range
  • – Temperature measurement using 10Kohm NTC resistor with accuracy of +/-1%, providing a direct output of voltage in the range of 1V to 3.6V for humidity measurement from 0% to 100% RH


The advancement of agricultural weather stations, powered by cutting-edge sensor technology, is revolutionizing farming practices in China. By providing real-time and accurate meteorological data, these stations enable farmers to make informed decisions to enhance crop productivity.

Integrating pressure and CO2 sensors, along with other crucial environmental indicators, holds the key to a sustainable and resilient agricultural future in China. As weather patterns continue to change, leveraging technology like IoT-driven agricultural weather stations becomes ever more critical for ensuring food security and meeting the nation’s growing agricultural needs.

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