Industries that use compressed air systems, compressed air piping and drying processes have one common factor to consider – moisture. If moisture is not properly monitored, it can lead to serious problems such as clogged pipes, equipment damage and contamination. This is where dew point sensors play an important role.
What is dew point?
Dew point is the temperature at which water vapor in the air forms dew or frost. When the air contains too much water vapor, condensation occurs, and this can cause problems in industrial applications. Therefore, it is important to monitor the dew point to avoid unwanted consequences.
How does pressure affect the dew point?
Air compression increases the water vapor pressure and thus the dew point. It is therefore important to take this into account if you release the air into the atmosphere before making a measurement. The dew point at the point of measurement may differ from the dew point in the process, which may lead to incorrect results.
What is a dew point sensor?
En daggpunktsgivare, även kallad daggpunktssensor eller kondensövervakare, används för att bedöma risken för kondensbildning. Givaren placeras vanligtvis på klimatkontrollerade tak, i rörledningar eller styrskåp för att förhindra skador. Sensorn fungerar genom impedans och består av två elektroder på vardera sidan av ett absorberande skikt. När gas passerar över sensorn absorberar den vattenånga på ett poröst hygroskopiskt dielektriskt område mellan ledande skikt. Vattenmolekyler ändrar den dielektriska konstanten, vilket resulterar i en förändring i givarens impedans. Det finns även portabel daggpunktsmätare som du kan läsa mer om här.
Why is dew point measurement important in industrial applications?
Industries that use compressed air systems, compressed air piping and drying processes have one common factor to consider – moisture. If moisture is not properly monitored, it can lead to serious problems such as clogged pipes, equipment damage and contamination. Therefore, it is important to monitor the dew point with a dew point monitor to avoid unwanted consequences.
What are common applications for dew point monitoring?
The dew point sensor enables high-precision measurement of dew point based on the hygrometric measurement principle and is ideal for early detection of condensation on surfaces, dew point measurement in compressed air systems, industrial drying processes and refrigeration dryers. Dry compressed air is essential for many industrial processes, so it is important to install dew point measurement instruments to protect equipment, save energy and prevent over drying. Dew point monitoring is also used in medical and breathing air, plastics drying, the food and pharmaceutical industry, and in mass transit, where dew point measurement is important for safety and reliability.
Summary
Dew point sensors are an important component in industrial applications where moisture can cause serious problems. The dew point is the temperature at which water vapor in the air forms dew or frost, and when the air contains too much water vapor, it can lead to condensation and damage to equipment. Dew point sensors are used to assess the risk of condensation and enable high-precision measurement of the dew point based on the hygrometric measurement principle. They are ideal for dew point measurement in compressed air systems, industrial drying processes and refrigeration dryers. Dew point monitoring is important to protect equipment, save energy and prevent over drying, and is also used in medical applications – breathing air, plastic drying, food and pharmaceutical industries and in mass transit, where dew point measurement is important for safety and reliability.
Questions and answers about dew point sensors:
Question: What type of gas can a dew point sensor be used for?
Response: Dew point sensors can be used to measure the dew point of any gas that contains water vapor, including compressed air, nitrogen, oxygen, and carbon dioxide.
Question: What is an acceptable dew point for compressed air systems?
Response: An acceptable dew point for compressed air systems depends on the specific application. Generally speaking, the dew point should be at least 10 degrees Celsius below the lowest temperature that the compressed air system will be exposed to.
Question: How to clean a dew point sensor?
Response: Dew point sensors should be cleaned with a soft, dry cloth to avoid damage to the surface. If the transducer has become contaminated with oil or dirt, it can be cleaned with a mild soap and water, but should be dried thoroughly before reuse.
Question: Can a dew point sensor be calibrated?
Response: Yes, dew point sensors can be calibrated to ensure the accuracy of the measurements. Calibration should be performed regularly, and it is important to follow the manufacturer's recommendations for calibration and maintenance.
