Dyacon Air Sensors: Combining Temperature, Pressure, and Humidity

Air sensors, specifically those that measure air temperature, are among the most common of weather instruments. Air sensors are vital for providing specific data that involve a variety of applications. Dyacon air sensors, both the Modbus-compatible and specialized data interfaces (SDI-12), are a critical component of any complete weather instrumentation system.  

Why do I need an air sensor if I have a thermometer outside? Dyacon air sensors are digital output sensors that measure air temperature, barometric pressure, and relative humidity. The measurement of all three of these parameters is critical for producing a well-rounded view of atmospheric conditions.  

Specifically, air temperature is the measure of how hot or cold the air is. This weather parameter not only affects the growth and reproduction of plants and animals, but it affects nearly all other weather parameters as well. The temperature of the air affects relative humidity, wind speed and direction, evaporation rates, and even precipitation types and patterns.  

Don't barometric pressure and relative humidity have more to do with water than air? Barometric pressure and relative humidity are also measured by Dyacon air sensors. The simple definition of barometric pressure is, "the weight of the overlying air pressing down on the earth." Barometric pressure affects the amount of gas, such as oxygen, that can dissolve in water, and the measurement of barometric pressure has been used to forecast weather conditions for hundreds of years.  

Relative humidity differs from general humidity measurements in that humidity represents the amount of moisture in the air, while relative humidity represents the percentage of moisture in the air at that temperature, relative to the maximum amount of moisture the air could hold at that temperature. In other words, relative humidity is the moisture, or water vapor, in the air relative to the temperature of the air.  

What makes a Dyacon air sensor useful? Dyacon air sensors are high-quality, low-power combination temperature, barometric pressure, and humidity sensor elements. These are integrated into a single probe and radiation shield, a design that reduces the cost, simplifies the installation, and minimizes the maintenance for the user.  

Dyacon air sensors are available in two models: Modbus RS-485 (TPH-1) or SDI-12 (TPH-2). The Modbus version can be used with Dyacon MS-100 weather stations or standard industrial automation controllers, such as programmable logic controllers (PLCs). PC applications may also be used to capture Modbus data. Those involved in forestry, meteorology, or hydrology often use SDI-12 sensors with environmental data loggers. 

Dyacon air sensors provide highly accurate measurements due in part to the fact that the sensor’s active sensing probe is housed in a compact radiation shield made of UV-stabilized polycarbonate. The low-mass shield is designed as an economical shield against direct sunlight and protection of the sensors during storms while allowing free flow of ambient air through the sensing probe. 

Could I benefit from a Dyacon air sensor? If you’re curious about what a Dyacon air sensor could do for you and/or your business, please feel free to contact us today. We would be happy to help you find the best weather instrumentation fit for your specific needs.


Content is the most important part of having quality links to your website. With Area-Info.net, we provide a quality location to share your story and include links to your website to help you grow. If you would like to learn more, visit this page to see how you can use Area-Info.net to rank higher and quicker in search engines. Contact me directly at [email protected] with any questions, or to schedule speaking engagements.

You May Also Like