Smart Humidity Control in Paper Production
In the paper manufacturing industry, environmental control is not just a technical detail—it’s a critical
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Tiny Drops, Big Impact: How Dew Point Transmitters Shape Your World
Discover the key factors to consider when selecting the optimal dew point temperature and humidity transmitter for reliable, accurate environmental monitoring across various applications from HENGKO.
Check Dew Point Sensor / Transmitter Selection Guide First
| Modell | By Application Condition | Viktiga funktioner |
| 1. Inline Dew Point Transmitter (Small HG602 Series ) | ||
| HG602-C | Cold and Dry Environment Mätning av daggpunkt (cold storage, freeze-drying systems) | – ±1°C Td Accuracy ( Ultra-high DewPoint Accuracy ) ; – Suitable for cold drying processes ; – Stable performance for precision applications |
| HG602-D | Standard Precision Mätning av daggpunkt (dry gas pipelines, glove boxes) | – ±2°C Td Accuracy ; – Designed for stable operation in normal temp environments ; – Reliable for dry zone applications |
| HG602-G （new） | Corrosive Environment Daggpunktsövervakning (acid/alkali gas systems, chemical plants) | – ±3°C Td Accuracy ; – Enhanced corrosion resistance ; – Suitable for harsh chemical environments |
| 2. Box Type Dew Point Transmitter ( HG808 Series ) | ||
| HG808-D | Normal Temperature Environment Dew Point Measurement (dry gas systems, glove boxes) | – ±2°C Td Accuracy ; – Dew point & temp output ; – 4–20mA interface ; – Accurate in dry zones |
| HG808-A | Ultra High Temperature Condition + Dew Point Measurement and moisture-sensitive areas | – Accurately measure dew point under 180℃ ; – Robust & interference-resistant ; – Suitable for high-temp special applications |
| HG808-G | Corrosive / Chemical Environment Dew Point Monitoring | – ±3°C Td Accuracy ; – Anti-corrosion design ; – Works in chemical & disinfectant environments |
HG602 Series
The Inline Dew Point Sensor is an innovative tool designed to integrate seamlessly into various industrial and commercial systems.
HG808 Series
HENGKO offers a wide range of temperature and humidity dew point sensors for many application.
HENGKO offers a broad array of industrial temperature and humidity sensors suitable for various monitoring needs, ranging from stainless steel sensor probes to dew point transmitters and as following 6 kinds of temperature and humidity monitor devices solution. Our focus is on providing accurate, reliable, and long-lasting sensors, making them perfect for a diverse array of applications.
HG970 Series
The Handheld Dew Point Meter is a compact, portable device designed for precise and convenient measurement of humidity in various environments.
HENGKO är en global ledare inom industriella sensorlösningar, med ett rykte om unik design och utmärkt prestanda. Våra temperatur- och luftfuktighetstransmittrar och sensorer används i ett brett spektrum av industrier, inklusive livsmedel och drycker, läkemedel, tillverkning och miljöövervakning.
Du kan helt anpassa en unik daggpunktssensorprodukt baserat på vår patenterade och egendesignade daggpunktssändarserie.
Du kommer att få mycket lägre och konkurrenskraftigt pris på grund av vår extremt kostnadseffektiva kontroll.
Du kommer alltid att möta de ständigt föränderliga marknadsbehoven med våra ständigt uppgraderade produkter.
Du kommer att få starkt marknadsföringsstöd för att hjälpa dig att sälja produkter framgångsrikt, materialstöd inkluderar: högupplösta produktbilder, coola 3d-effektvideor och mycket mer.
Dew Point Sensor for Compressed Air System Monitor : Ensuring Optimal Humidity Control and Air Quality for your Air Compress Machine
HENGKO är en ledande tillverkare av professionella daggpunktstransmittrar, temperatur- och luftfuktighetstransmittrar och handhållna daggpunktsmätare. Vi erbjuder ett brett utbud av lösningar för temperatur- och luftfuktighetsövervakning för att möta dina specifika behov.
Våra produkter är utformade för noggrannhet och tillförlitlighet, vilket säkerställer optimal prestanda i olika applikationer. Oavsett om du behöver en högkvalitativ daggpunktssensor eller en robust fukttransmitter har HENGKO den expertis och de produkter som krävs för att stödja ditt projekt.
Kontakta oss idag för att diskutera dina krav och hitta de bästa lösningarna för dina övervakningsbehov.
The dew point is the temperature to which the air must be cooled to become saturated with water vapor. In other words, it is the temperature at which the air can no longer hold any more water vapor in the form of gas. If the air is cooled further, the excess water vapor will condense into liquid water, forming dew.
The dew point is an important meteorological parameter because it is a measure of the amount of moisture in the air. The higher the dew point, the more moisture the air contains. This can make the air feel muggy or uncomfortable, especially on a hot day.
The dew point is also used to forecast the formation of fog and dew. If the dew point is close to the air temperature, then fog or dew is likely to form. This is because the air is close to becoming saturated, and any further cooling will cause the water vapor to condense.
Here is a table of general comfort levels using dew point:
| Dew Point (°F) | Comfort Level |
|---|---|
| Below 50 | Comfortable |
| 50-60 | Somewhat muggy |
| 60-65 | Muggy |
| 65-70 | Very muggy |
| Above 70 | Oppressive |
As you can see, dew point is a good indicator of how comfortable the air will feel. If you are planning to be outdoors, it is a good idea to check the dew point forecast before you go.
Here are some of the main features of dew point transmitters:
In addition to these main features, dew point transmitters may also offer a variety of other features, such as:
Dew point transmitters are a valuable tool for measuring and monitoring moisture content in a variety of applications. They are accurate, reliable, and versatile, and they can be used to improve the quality of products, protect equipment, and optimize industrial processes.
There are three main types of dew point transmitters: chilled mirror, polymer, and metal oxide.
Kyld spegel
Chilled mirror dew point transmitters are the most accurate type of dew point transmitter. They work by cooling a mirror until water vapor condenses on its surface. The temperature of the mirror is then measured, and this temperature is the dew point. Chilled mirror dew point transmitters are typically used in applications where high accuracy is required, such as in the pharmaceutical and semiconductor industries.
Polymer
Polymer dew point transmitters are less accurate than chilled mirror dew point transmitters, but they are also less expensive. They work by measuring the change in electrical resistance of a polymer sensor as moisture content changes. Polymer dew point transmitters are typically used in applications where cost is a major concern, such as in the HVAC industry.
Metalloxid
Metal oxide dew point transmitters are similar to polymer dew point transmitters, but they use a different type of sensor. Metal oxide dew point transmitters are typically used in applications where a wide measuring range is required, such as in the food and beverage industry.
Here is a table comparing the three main types of dew point transmitters:
| Funktion | Chilled Mirror | Polymer | Metal Oxide |
|---|---|---|---|
| Noggrannhet | Hög | Medium | Medium |
| Kostnad | Hög | Låg | Medium |
| Measuring Range | Wide | Narrow | Wide |
| Svarstid | Slow | Fast | Medium |
| Maintenance | Hög | Låg | Medium |
| Tillämpningar | Pharmaceutical, Semiconductor | HVAC | Mat och dryck |
The best type of dew point transmitter for a particular application will depend on the specific requirements of the application. In general, chilled mirror dew point transmitters are the best choice for applications where high accuracy is required. Polymer dew point transmitters are a good choice for applications where cost is a major concern. Metal oxide dew point transmitters are a good choice for applications where a wide measuring range is required.
Dew point transmitters are important in a variety of applications, including:
HVAC-system: Dew point transmitters are used in HVAC systems to control humidity levels. Humidity is important for human comfort and health. Too much humidity can make the air feel muggy and uncomfortable, and it can also lead to the growth of mold and mildew. Too little humidity can make the air feel dry and can also lead to respiratory problems.
Industriell processtyrning: Dew point transmitters are used in industrial process control to ensure that products are manufactured under the correct humidity conditions. Humidity can affect the quality of many products, such as pharmaceuticals, semiconductors, and food and beverages.
Miljöövervakning: Dew point transmitters are used in environmental monitoring to track changes in moisture content in the atmosphere. This information can be used to forecast weather conditions and to identify potential environmental problems.
Here are some specific examples of how dew point transmitters are used in different industries:
Pharmaceutical industry: Dew point transmitters are used to control humidity levels in clean rooms where pharmaceuticals are manufactured. Humidity levels must be carefully controlled to prevent the degradation of drugs and to ensure that they are manufactured to the highest quality standards.
Semiconductor industry: Dew point transmitters are used to control humidity levels in semiconductor fabrication plants. Humidity levels must be carefully controlled to prevent the contamination of wafers and to ensure that semiconductors are manufactured to the highest quality standards.
Food and beverage industry: Dew point transmitters are used to control humidity levels in food and beverage production facilities. Humidity levels must be carefully controlled to prevent the growth of mold and mildew, to ensure that products have the correct texture, and to extend the shelf life of products.
HVAC industry: Dew point transmitters are used in HVAC systems to control humidity levels in homes, offices, and other buildings. Humidity levels must be carefully controlled to ensure human comfort and health.
Miljöövervakning: Dew point transmitters are used in environmental monitoring stations to track changes in moisture content in the atmosphere. This information can be used to forecast weather conditions and to identify potential environmental problems, such as drought or flooding.
As you can see, dew point transmitters are important in a wide variety of applications. They are essential for ensuring the quality of products, protecting equipment, and optimizing industrial processes.
In addition to the benefits listed above, dew point transmitters can also help to:
Choosing the right dew point transmitter for your compressed air system is crucial for maintaining efficient operation and ensuring the quality of your products. Here’s a comprehensive guide to selecting the most suitable dew point transmitter for your specific needs:
Determine the Required Accuracy: Consider the accuracy requirements of your application. If you need precise dew point measurements, a chilled mirror dew point transmitter is the most accurate option. However, if cost is a primary concern, a polymer or metal oxide dew point transmitter may be sufficient.
Evaluate the Measuring Range: Assess the dew point range you need to measure. Compressed air systems typically operate within a specific dew point range, so ensure the transmitter can cover that range effectively.
Consider Response Time and Maintenance: Response time is essential for detecting changes in dew point quickly. If real-time monitoring is critical, choose a transmitter with a fast response time. Maintenance requirements also vary between types. Chilled mirror transmitters require more maintenance, while polymer and metal oxide transmitters are generally low-maintenance.
Select the Appropriate Output Options: Decide on the output options you need for integration with your system. Common output options include analog (4-20 mA or 0-10 V), digital (RS-485 or Modbus), and alarm relays.
Environmental Considerations: Evaluate the environmental conditions where the transmitter will be installed. Choose a transmitter that can withstand the expected temperature, humidity, and vibration levels.
Ytterligare funktioner: Consider additional features that may be beneficial, such as data logging, alarm setpoints, and remote access capabilities. These features can enhance monitoring and control capabilities.
Consult with Experts: If you have complex requirements or need assistance in selecting the most suitable dew point transmitter, consult with experienced professionals in the field. They can provide tailored recommendations based on your specific application and needs.
Here’s a summary table to aid in your selection:
| Funktion | Chilled Mirror | Polymer | Metal Oxide |
|---|---|---|---|
| Noggrannhet | Hög | Medium | Medium |
| Kostnad | Hög | Låg | Medium |
| Measuring Range | Wide | Narrow | Wide |
| Svarstid | Slow | Fast | Medium |
| Maintenance | Hög | Låg | Medium |
| Tillämpningar | Pharmaceutical, Semiconductor | HVAC | Mat och dryck |
| Output Options | Analog, Digital, Alarm Relays | Analog, Digital | Analog, Digital |
| Additional Features | Data Logging, Alarm Setpoints, Remote Access | Begränsad | Begränsad |
4-20mA-utgången är ett populärt val för daggpunktsgivare eftersom det är en industriell standardutgång som är kompatibel med ett brett utbud av styrsystem. Det är också en mycket tillförlitlig och ljudtålig utgång, vilket gör den väl lämpad för användning i tuffa industrimiljöer.
Här är några av fördelarna med att använda en 4-20mA-utgång för daggpunktsgivare:
Kompatibilitet: Utgången på 4-20 mA är kompatibel med ett stort antal styrsystem, inklusive PLC, DCS och SCADA-system. Detta gör det enkelt att integrera daggpunktsgivare i befintliga styrsystem.
Tillförlitlighet: 4-20mA-utgången är en mycket tillförlitlig utgång som inte är känslig för brusstörningar. Detta är viktigt för daggpunktsgivare, som ofta används i tuffa industriella miljöer.
Noggrannhet: Utgången 4-20 mA kan ge exakta mätningar av daggpunkten. Detta är viktigt för applikationer där exakt kontroll av daggpunkten krävs.
Range: Utgången på 4-20 mA kan täcka ett brett intervall av daggpunktsvärden. Detta gör den lämplig för en mängd olika applikationer.
Kostnad: 4-20mA-utgången är en relativt billig utgång att implementera. Detta gör den till ett kostnadseffektivt alternativ för daggpunktsgivare.
Förutom de fördelar som anges ovan är 4-20mA-utgången också en mycket mångsidig utgång. Den kan användas för att överföra en mängd andra parametrar, t.ex. temperatur, tryck och flödeshastighet. Detta gör den till en värdefull utgång för ett brett spektrum av industriella applikationer.
Här följer några exempel på applikationer där daggpunktsgivare med 4-20mA-utgångar ofta används:
System för komprimerad luft: Daggpunktsgivare används i tryckluftssystem för att övervaka och kontrollera luftens fuktinnehåll. Detta är viktigt för att förhindra korrosion och andra skador på utrustningen.
HVAC-system: Daggpunktsgivare används i HVAC-system för att kontrollera luftfuktigheten i byggnader. Detta är viktigt för människors komfort och hälsa.
Industriella torkningsprocesser: Daggpunktsgivare används i industriella torkningsprocesser för att övervaka och kontrollera fukthalten i den produkt som torkas. Detta är viktigt för att säkerställa produktens kvalitet.
Förädling av livsmedel och drycker: Daggpunktssensorer används inom livsmedels- och dryckesindustrin för att kontrollera fukthalten i den produkt som bearbetas. Detta är viktigt för att säkerställa produktens säkerhet och kvalitet.
Miljöövervakning: Daggpunktssensorer används i miljöövervakningsstationer för att spåra förändringar i fukthalten i atmosfären. Denna information kan användas för att förutse väderförhållanden och för att identifiera potentiella miljöproblem.
Som du kan se är daggpunktsgivare med 4-20mA-utgångar ett värdefullt verktyg för ett brett spektrum av industriella applikationer. De är tillförlitliga, exakta och mångsidiga och kan enkelt integreras i befintliga styrsystem.
Priset på daggpunktstransmittrar kan variera beroende på tillverkare, funktioner och transmitterns noggrannhet. I allmänhet kostar daggpunktstransmittrar med högre noggrannhet och fler funktioner mer än daggpunktstransmittrar med lägre noggrannhet och färre funktioner.
Baserat på min forskning skulle jag säga att priset på daggpunktstransmittrar i allmänhet är rimligt. Kostnaden för de komponenter och det arbete som krävs för att tillverka daggpunktstransmittrar är hög, och de företag som tillverkar daggpunktstransmittrar måste få tillbaka dessa kostnader för att kunna fortsätta sin verksamhet. Dessutom används daggpunktstransmittrar i en mängd olika kritiska applikationer, så det är viktigt att de är tillförlitliga och exakta. Det höga priset på daggpunktstransmittrar återspeglar det faktum att de är högkvalitativa instrument som man kan lita på ger exakta mätningar.
Här är några faktorer som kan påverka priset på en daggpunktstransmitter:
Här är en tabell över prisintervallet för daggpunktstransmittrar på marknaden:
| Typ | Prisintervall |
|---|---|
| Kyld spegel | $2,000 – $10,000 |
| Polymer | $500 – $2,000 |
| Metalloxid | $500 – $1,500 |
Som du kan se kan prisintervallet för daggpunktstransmittrar variera beroende på typen av transmitter. Daggpunktstransmittrar med kyld spegel är den dyraste typen av transmitter, men de är också de mest exakta. Polymer- och metalloxiddaggpunktstransmittrar är billigare, men de är också mindre exakta.
Priset på daggpunktstransmittrar kan också variera beroende på transmitterns funktioner. Daggpunktstransmittrar med dataloggning, larmbörvärden och fjärråtkomstfunktioner kostar t.ex. normalt mer än daggpunktstransmittrar med färre funktioner.
Om du letar efter en daggpunktssändare av hög kvalitet rekommenderar jag att du köper en från ett välkänt varumärke som har ett gott rykte när det gäller kvalitet och tillförlitlighet. Du bör också fundera över vilka funktioner som är viktiga för dig och vilken noggrannhet du behöver. Om du inte är säker på vilken daggpunktssändare som är rätt för dig rekommenderar jag att du rådgör med en fackman som kan hjälpa dig att fatta ett välgrundat beslut.
några frågor om Daggpunkt och Transmitter och Sensor som du och andra vill veta
En hög daggpunkt innebär att luften kan hålla mycket fukt innan den blir mättad och kondens uppstår. I allmänhet anses en daggpunkt över 15°C (60°F) vara hög. Höga daggpunkter kan göra att luften känns fuktig och obehaglig, särskilt under en varm dag.
Actually there are two main types of dew point transmitters, each one with a different working principle, please check as following:
1. Chilled Mirror Dew Point Transmitters:
2. Polymer/Ceramic Sensor Dew Point Transmitters:
Which type is better?
The choice between a chilled mirror and a polymer/ceramic sensor transmitter depends on your specific needs:
I hope this explanation helps!
Feel free to ask or contact our Team by email if you have any further questions about dew point transmitters.
Dew point and humidity are two different measures of the amount of moisture in the air.
1.Dew point is the temperature to which the air must be cooled to become saturated with water vapor. In other words, it is the temperature at which the air can no longer hold any more water vapor in the form of gas. If the air is cooled further, the excess water vapor will condense into liquid water, forming dew.
2.Humidity, on the other hand, is the amount of water vapor in the air, expressed as a percentage of the maximum amount of water vapor that the air can hold. Relative humidity is the most common measure of humidity, and it is calculated by dividing the actual amount of water vapor in the air by the maximum amount of water vapor that the air can hold at that temperature.
There are a few different ways to calculate dew point temperature. The most common method is to use a hygrometer, which is a device that measures both temperature and humidity. The dew point temperature can then be calculated from the temperature and humidity readings using a special formula.
Another way to calculate dew point temperature is to use a psychrometer, which is a device that consists of two thermometers, one with a wet bulb and one with a dry bulb. The dew point temperature can then be calculated from the difference between the wet bulb and dry bulb temperatures using a special table or formula.
No, dew point and humidity are not the same thing. Dew point is a measure of the amount of moisture in the air, while humidity is a measure of the ratio of the amount of water vapor in the air to the maximum amount of water vapor that the air can hold.
Two different air masses can have the same dew point but different humidity levels. For example, a warm air mass with a high dew point can have the same humidity level as a cool air mass with a low dew point. This is because the warm air mass can hold more water vapor than the cool air mass.
There is no cod point in Mountain Dew. Cod points are a unit of measurement used to quantify the amount of cod liver oil in a product. Mountain Dew does not contain cod liver oil.
Den behagliga daggpunkten för de flesta människor ligger mellan 4°C (40°F) och 15°C (60°F). Under 40°F kan luften kännas torr och obehaglig. Över 60°F kan luften kännas fuktig och obehaglig.
A dew point above 60°F (15°C) is considered humid. Humid air feels sticky and uncomfortable, especially on a hot day.
A dew point above 65°F (18°C) is considered muggy. Muggy air feels even more sticky and uncomfortable than humid air.
Dew point meters, also known as dew point transmitters or sensors, have a variety of purposes in different fields. Here are some of the most common ones:
1. Monitoring atmospheric conditions:
2. Controlling humidity levels:
3. Protecting equipment and materials:
4. Research and scientific applications:
Overall, dew point meters are incredibly versatile tools used across various fields to understand and manage humidity levels, ensuring safety, efficiency, and quality in diverse applications.
Testing the humidity in an air cylinder is crucial to ensure the quality and performance of the compressed air it contains. Excessive moisture can lead to corrosion, reduced flow, and malfunctioning of equipment using the air. Here are two common methods for testing humidity in an air cylinder:
1. Chilled Mirror Hygrometer:
2. Hygroscopic Sensor:
Ytterligare tips:
So Above these methods and tips, you can effectively test the humidity in your air cylinder and ensure the optimal performance of your equipment.
Controlling the dew point in compressed air is crucial for ensuring the quality and performance of your pneumatic equipment. Excessive moisture can lead to corrosion, reduced flow, malfunctioning of equipment, and even contamination of sensitive products. Here are some key methods for controlling dew point in compressed air:
1. Air Dryers:
Air dryers are the most common and effective method for removing moisture from compressed air. They work by lowering the dew point, the temperature at which water vapor condenses. There are two main types of air dryers:
Refrigerant dryers: These dryers use a refrigeration system to cool the compressed air, causing water vapor to condense and drain out. They are suitable for achieving dew points down to around 40°F (4°C).
Desiccant dryers: These dryers use a desiccant material, such as silica gel or alumina, to absorb moisture from the compressed air. They can achieve much lower dew points, down to -40°F (-40°C) or even lower, making them ideal for critical applications
2. Aftercoolers:
3. Drain Traps:
4. System Design and Maintenance:
Ytterligare tips:
By implementing these methods and tips, you can effectively control the dew point in your compressed air system and ensure the optimal performance and longevity of your equipment.
Dew point transmitters and sensors play a crucial role in regulating moisture levels across various industries. Here are the top 10 applications where these instruments shine:
Ensuring dry and clean compressed air is vital for efficient operation and preventing corrosion in pneumatic equipment. Dew point transmitters monitor dryness levels, optimizing dryer performance and avoiding costly issues.
Precise dew point control is critical for product quality and consistency in chemical and pharmaceutical manufacturing. Precisely measuring and managing moisture prevents reactions, ensures accurate formulations, and safeguards product stability.
Dew point control is crucial for food product quality and shelf life. Monitoring and maintaining optimal moisture levels in storage and processing environments prevents condensation, mold growth, and product spoilage.
Dew point sensors help maintain comfortable humidity levels in buildings and optimize cooling systems. Accurate dew point data allows for proper air conditioning control, maximizing energy efficiency and preventing condensation issues.
Dew point measurements are integral for weather forecasting, climate studies, and agricultural applications. Monitoring dew point variations helps predict frost, dew formation, and other environmental phenomena.
Dew point control is crucial for aircraft safety and performance. Dry air prevents ice formation on critical components, ensuring airworthiness and safe operation.
Maintaining precise dew point levels in medical facilities and biotech labs is essential for sterility and preventing the growth of harmful microorganisms.
Controlling moisture in power plants is crucial for efficient energy production and preventing corrosion in turbines and other equipment. Dew point measurement ensures optimal plant operation and minimizes maintenance costs.
Monitoring dew point during construction helps prevent condensation problems, mold growth, and structural damage. Dew point data informs proper ventilation and drying strategies, ensuring durable and healthy buildings.
Dew point sensors help optimize paint curing processes in car manufacturing and prevent condensation within sealed vehicle components. This ensures high-quality finishes and protects against corrosion.
Above are just a few examples, and dew point transmitters and sensors have numerous applications beyond these ten.
Their versatility and precision in measuring moisture make them invaluable tools across various industries.
Do you have any specific application in mind where you’d like to know more about dew point transmitters and sensors?
Kontakta HENGKO idag om du har frågor om temperatur- och fuktgivare, sändare och lösningar
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HENGKO är en framstående leverantör av lösningar för temperatur- och luftfuktighetsövervakning för olika branscher och specialiserar sig på tillverkning av avancerade temperatur- och luftfuktighetstransmittrar och sensorer.
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