The Pressure Dew Point: A Key Factor for Compressed Air Quality

The pressure dew point is a crucial criterion for assessing the quality of compressed air. Particularly in industrial applications where compressed air is used as an energy carrier or in production processes, the pressure dew point plays a central role. In this article, we will explain what the pressure dew point is, why it is important, and how you can optimize it. Additionally, we will discuss relevant products that can help you ensure the quality of your compressed air.

What is the Pressure Dew Point?

The pressure dew point indicates the temperature at which the moisture in the compressed air begins to condense when the air is compressed to a specific pressure. This value is crucial because moisture in compressed air can lead to corrosion, malfunctions, and quality issues in production.

Why is the Pressure Dew Point Important?

A low pressure dew point indicates dry compressed air, which is vital for many applications. Moist compressed air can cause significant problems in pneumatic controls or the food industry. Therefore, it is essential to continuously monitor and control the pressure dew point.

How is the Pressure Dew Point Measured?

The pressure dew point is typically measured with specialized dew point measuring devices. These devices are designed to provide precise readings and allow continuous monitoring of compressed air quality. Some of the most advanced models even offer the ability to analyze data in real-time and take immediate action if necessary.

Optimizing the Pressure Dew Point

There are various approaches to optimizing the pressure dew point:

Using Refrigeration Dryers: These devices cool the compressed air so that the moisture condenses and can be removed. Refrigeration dryers are highly effective and widely used.
Adsorption Dryers: These dryers use desiccants to remove moisture from the compressed air. Adsorption dryers are ideal for applications requiring extremely low dew points.
Membrane Dryers: This technology separates moisture from compressed air through a semi-permeable membrane. Membrane dryers are compact and low-maintenance.

Relevant Products for Compressed Air Treatment

At BERG Compressors, we offer a wide range of products for compressed air treatment that help you control the pressure dew point and improve the quality of your compressed air.

Refrigeration Dryers

Our refrigeration dryers provide efficient solutions for lowering the pressure dew point at +3 °C. They are robust, reliable, and easy to maintain.

DRYBERG®️ RF01/AC Refrigeration dryer

Refrigeration dryer DRYBERG®️ RF01/AC equals to DRYPOINT®️ RA70/AC Integrated extras ›› Equipped with BEKOMAT® as standard ›› Central control panel to inspect the function of the dryer and monitor the integrated BEKOMAT®

Net €1,890.00 €2,249.10*

DRYBERG®️ RF02/AC Refrigeration dryer

Refrigeration dryer DRYBERG®️ RF02/AC equals to DRYPOINT®️ RA110/AC Environmentally friendly and easy to service ›› Use of environmentally and ozone-friendly refrigerant with a particularly favourable GWP value (Global Warming Potential) ›› Low-cost and fast maintenance

Net €2,040.00 €2,427.60*

DRYBERG®️ RF03/AC Refrigeration dryer

Refrigeration dryer DRYBERG®️ RF03/AC equals to DRYPOINT®️ RA190/AC Function of Refrigeration air dryers A refrigeration air dryer is a device that removes moisture from compressed air by cooling it down and then condensing the moisture into liquid water. The compressed air enters the dryer at high pressure and temperature, and it is then cooled using a refrigeration system. As the air cools, the moisture in the air condenses, and the resulting liquid water is collected and drained from the system. The cooled and dried air is then reheated to an appropriate temperature for use in industrial applications. This process ensures that the compressed air is free from moisture, making it suitable for use in various industrial processes and equipment. Certified skilled personnel Installation works must exclusively be carried out by authorised and qualified skilled personnel. Prior to undertaking any measures on the DRYPOINT® RA 20-960 compressed-air refrigeration dryer, the certified skilled personnel shall read up on the device by carefully studying the operating instructions. The operator is responsible for the adherence to these provisions. The respective directives in force apply to the qualification and expertise of the certified skilled personnel. For safe operation, the device must only be installed and operated in accordance with the indications in the operating instructions. In addition, the national and operational statutory provisions and safety regulations, as well as the accident prevention regulations required for the respective case of application, need to be observed during employment. This applies accordingly when accessories are used.

Net €2,950.00 €3,510.50*

DRYBERG®️ RF04/AC Refrigeration dryer

Refrigeration dryer DRYBERG®️ RF04/AC equals to DRYPOINT®️ RA240/AC Refrigerant leak! A refrigerant leak involves the danger of serious injury and damage to the environment. The DRYBERG® RF 01-16 compressed-air refrigeration dryer contains fluorinated greenhouse gas/refrigerant. Installation, repair and maintenance works at the refrigeration system must only be carried out by certified skilled personnel (specialists). A certification in accordance with EC regulation 303/2008 must be available. The requirements of the EC 842/2006 directive must be met under all circumstances. Please refer to the indications on the name plate as regards the type and amount of refrigerant. Comply with the following protective measures and rules of conduct: • Storage: Keep the container tightly closed. Keep it in a cool and dry place. Protect it against heat and direct sunlight. Keep it away from ignition sources. • Handling: Take measures against electrostatic charging. Ensure good ventilation/suction at the workplace. Check fittings, connections and ducts for tightness. Do not inhale the gas. Avoid contact with the eyes or the skin. • Prior to carrying out works on refrigerant-carrying parts, remove the refrigerant to such an extent that safe working is possible. • Do not eat, drink or smoke during work. Keep out of the reach of children. • Breathing protection: ambient-air-independent respirator (at high concentrations). • Eye protection: sealing goggles. • Hand protection: protective gloves (e.g. made of leather). • Personal protection: protective clothing. • Skin protection: use protective cream.

Net €3,190.00 €3,796.10*

DRYBERG®️ RF05/AC Refrigeration dryer

Refrigeration dryer DRYBERG®️ RF05/AC equals to DRYPOINT®️ RA330/AC Note! Ambient conditions! In the event that the dryer is not installed under suitable ambient conditions, the ability of the device to condense refrigerant gas is impaired. This can result in a higher load of the refrigerating compressor, and in a loss of efficiency and performance of the dryer. This in turn leads to overheated condenser fan motors, to malfunction of electric components and to a breakdown of the dryer. Failures of this type will affect warranty considerations. Do not install the dryer in an environment in which chemicals with a corrosive effect, explosive gases, toxic gases, evaporation heat, high ambient temperatures or extreme dust and dirt can be found.

Net €3,480.00 €4,141.20*

DRYBERG®️ RF06/AC Refrigeration dryer

Refrigeration dryer DRYBERG®️ RF06/AC equals to DRYPOINT®️ RA370/AC Proper use This dryer was designed, manufactured and tested to separate the moisture which normally exists in compressed air. Any other use is considered improper. The manufacturer shall not be liable for problems occurring as a consequence of improper use. The user alone is responsible for any damage resulting from that. Furthermore, the correct use includes the compliance with the installation instructions, in particular in respect of: • The voltage and frequency of the main voltage supply. • The pressure, temperature and flow rate of the inlet air. • The pressure, temperature and cooling-water throughput (water-cooled). • The ambient temperature. When delivered, the dryer is tested and fully assembled. The customer only needs to connect the device to the system in accordance with the instructions in the following chapters.

Net €4,380.00 €5,212.20*

DRYBERG®️ RF08/AC Refrigeration dryer

Refrigeration dryer DRYBERG®️ RF08/AC equals to DRYPOINT®️ RA490/AC Operating instructions in accordance with the 2014/68/EU Pressure Equipment Directive The DRYPOINT® RA 20-960 compressed-air refrigeration dryer contains pressure equipment in the sense of the 2014/68/EU Pressure Equipment Directive. Therefore, the entire plant needs to be registered with the supervisory authority if required in accordance with the local regulations. For the examination prior to the start-up and for periodic inspections, the national regulations need to be observed, such as the industrial safety regulation in the Federal Republic of Germany. In countries outside the EU, the respective regulations in force there need to be adhered to. The proper use of pressure devices is the basic requirement for safe operation. As regards pressure devices, the following points need to be observed: • The DRYPOINT® RA 20-960 compressed-air refrigeration dryer must only be employed within the pressure and temperature range limits indicated by the manufacturer on the name plate. • No welding must be carried out on the pressure parts. • The DRYPOINT® RA 20-960 compressed-air refrigeration dryer must neither be installed in insufficiently ventilated rooms nor near heat sources or inflammable substances. • To avoid fractures resulting from material fatigue, the refrigeration dryer should not be exposed to vibrations during operation. • The maximum operating pressure indicated by the manufacturer on the name plate must not be exceeded. It is the installer's responsibility to install the appropriate safety and control devices. Prior to the start-up of the DRYPOINT® RA 20-960 compressed-air refrigeration dryer, the connected pressure generator (compressor etc.) must be set to the max. permissible operating pressure. The integrated safeguard needs to be checked by an approved inspection agency. • The documents related to the DRYPOINT® RA 20-960 compressed-air refrigeration dryer (manual, operating instructions, manufacturer's declaration etc.) must be kept safe for future reference. • No objects whatsoever must be installed at or placed on the DRYPOINT® RA 20-960 compressed-air refrigeration dryer and the connecting lines. • Installation of the plant in frost-free places only. • Operation of the plant is only permissible with fully closed and intact housing and cover panels. Operation of the plant with damaged housing/cover panels is prohibited.

Net €4,840.00 €5,759.60*

DRYBERG®️ RF10/AC Refrigeration dryer

Refrigeration dryer DRYBERG®️ RF10/AC equals to DRYPOINT®️ RA630/AC Ambient conditions! In the event that the dryer is not installed under suitable ambient conditions, the ability of the device to condense refrigerant gas is impaired. This can result in a higher load of the refrigerating compressor, and in a loss of efficiency and performance of the dryer. This in turn leads to overheated condenser fan motors, to malfunction of electric components and to a breakdown of the dryer. Failures of this type will affect warranty considerations. Do not install the dryer in an environment in which chemicals with a corrosive effect, explosive gases, toxic gases, evaporation heat, high ambient temperatures or extreme dust and dirt can be found.

Net €7,030.00 €8,365.70*

DRYBERG®️ RF110/AC Refrigeration dryer

Refrigeration dryer DRYBERG®️ RF110/AC equals to DRYPOINT®️ RA6600/AC THERMAL STORAGE OPERATION FOR LOW AIR FLOWS The refrigerant compressor cycles ON/OFF for maximum savings and reliability. Since the refrigeration capacity is greater than the load, the excess capacity cools the all-in-one exchanger that acts like a thermal storage. • For high/medium flows, the dryer applies the Impulse Technology to regulate its drying capacity. • For low air flows, the dryer utilizes the “thermal storage” operation.

Net €49,060.00 €58,381.40*

DRYBERG®️ RF13/AC Refrigeration dryer

Refrigeration dryer DRYBERG®️ RF13/AC equals to DRYPOINT®️ RA750/AC Minimum installation requirements: • Choose an area which is clean and dry, free from dust and protected against atmospheric disturbances. • The load-bearing zone must be even, horizontal and able to bear the weight of the dryer. • Minimum ambient temperature +1°C. • Maximum ambient temperature +50°C. • Ensure a proper cooling air replacement. • Allow a sufficient clearance on each side of the dryer for proper ventilation and to facilitate maintenance operations. The dryer does not require attachment to the floor surface.

Net €8,400.00 €9,996.00*

Adsorption Dryers

For particularly demanding applications, we recommend our adsorption dryers. These devices offer extremely low dew points and are ideal for industrial applications requiring the highest compressed air quality. We easily reach to -40 °C and even -70 °C.

DRYBERG® AD1000 Adsorption Dryer

Adsorption Dryer DRYBERG® AD1000 Adsorption Dryer DRYBERG® Switch-over Once the regeneration process is done the pressure build up in the vessel is started by closing the purge valves. After reaching the operating pressure the air flow is changed from the adsorbing vesel to the freshly regenerated vessel. Adsorption now commences in the freshly regenerated vessel, while the other vessel enters its regeneration cycle.

Net €20,390.00 €24,264.10*

DRYBERG® AD1000 CT Adsorption Dryer

Adsorption dryers heatless oil free DRYBERG® AD1000 CT Compact and Powerful: Maximizing Space Without Sacrificing Performance The compact design of the DRYBERG® AD150-1200CT allows it to fit into tight spaces without compromising on performance. Despite its small footprint, this dryer is capable of handling high volumes of compressed air efficiently. This feature is particularly beneficial for facilities with limited space or those looking to optimize their layout while still achieving excellent air quality. Technical Data of Adsorption Dryer heatless oil free DRYBERG® AD1000 CT Capacity* [m3/m] 16,6 Capacity* [m3/h] 1000 Connection [inch] 2" Dimensions (AxBxCxD) [mm] 2198x1173x2053x900 Weight [kg] 1299 Min. pressure [bar g] 4 Max. pressure [bar g] 16 Power supply 230 V / 50-60 Hz AC Residual oil content at 20 °C [mg/m³] 0,003 Pressure dew point [°C] -40 *calculated at 1 bar (abs.) and 20°C at 7 bar g operating pressure and 35 °C compressed air inlet temperature (saturated condition) Operating pressure (bar g) 4 5 6 7 8 9 10 11 12 13 14 15 16 Inlet Temp.(°C) 35 0,6 0,7 0,8 1 1,1 1,2 1,3 1,5 1,5 1,6 1,6 1,7 1,7 40 0,5 0,6 0,7 0,8 0,9 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,7 45 0,4 0,5 0,5 0,6 0,7 0,8 0,9 1 1 1,1 1,2 1,3 1,4 >45 0 0 0 0 0 0 0 0 0 0 0 0 0

Net €30,720.00 €36,556.80*

DRYBERG® AD110 Adsorption Dryer

Adsorption Dryer DRYBERG® AD110 Adsorption dryer AD AD is a product range that offers our customers a wide range of dry air solutions with volume flows from 20 Nm3 / h to 110 Nm3 / h. An innovative design of AD desiccant dryers, developed with our customers in mind, enables quick and reliable installation, use and maintenance. Installation is easy with our ready-to-use controller. By minimizing the number of parts and movements required for assembly and disassembly, maintenance is quick and reliable. ADVANTAGES Large selection of products to suit your needs Robust and intuitive controller Easy to assemble and disassemble Fast and reliable maintenance Adsorbent in cartridges The standard version includes coalesc

Net €3,950.00 €4,700.50*

DRYBERG® AD1200 Adsorption Dryer

Adsorption Dryer DRYBERG® AD1200 Adsorption Dryer DRYBERG® DESCRIPTION AD adsorption dryers are designed for the continuous separation of water vapor from the compressed air to reduce the pressure dew point. The AD-Series dryer consists of two columns filled with treble beds, control with LCD display, valves, gauges, support structure and suitable filter housings with the required filter element. The adsorption is carried out under pressure in the first column, while the second column is regenerated with a portion of already dried compressed air at ambient pressure. When the first column is saturated to some degree, column switching is performed and the adsorption process continues in the second column without pressure drop at the outlet of the dryer. The regeneration of saturated desiccant is possible because a small portion of the already dry compressed air is decompressed and becomes extremely dry during expansion.

Net €23,500.00 €27,965.00*

DRYBERG® AD1200 CT Adsorption Dryer

Adsorption dryers heatless oil free DRYBERG® AD1200 CT Advanced Control Systems: Ensuring Optimal Performance and Monitoring Equipped with state-of-the-art control systems, the DRYBERG® AD150-1200CT provides real-time monitoring and diagnostics. These features allow operators to track performance metrics such as pressure levels and moisture content, ensuring that the system operates within optimal parameters. This proactive approach helps identify potential issues before they escalate, minimizing downtime and enhancing overall system reliability. Technical Data of Adsorption Dryer heatless oil free DRYBERG® AD1200 CT Capacity* [m3/m] 20 Capacity* [m3/h] 1200 Connection [inch] 2" Dimensions (AxBxCxD) [mm] 2298x1173x2053x900 Weight [kg] 1366 Min. pressure [bar g] 4 Max. pressure [bar g] 16 Power supply 230 V / 50-60 Hz AC Residual oil content at 20 °C [mg/m³] 0,003 Pressure dew point [°C] -40 *calculated at 1 bar (abs.) and 20°C at 7 bar g operating pressure and 35 °C compressed air inlet temperature (saturated condition) Operating pressure (bar g) 4 5 6 7 8 9 10 11 12 13 14 15 16 Inlet Temp.(°C) 35 0,6 0,7 0,8 1 1,1 1,2 1,3 1,5 1,5 1,6 1,6 1,7 1,7 40 0,5 0,6 0,7 0,8 0,9 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,7 45 0,4 0,5 0,5 0,6 0,7 0,8 0,9 1 1 1,1 1,2 1,3 1,4 >45 0 0 0 0 0 0 0 0 0 0 0 0 0

Net €34,500.00 €41,055.00*

DRYBERG® AD150 Adsorption Dryer

Adsorption Dryer DRYBERG® AD150 Adsorption Dryer DRYBERG® DESCRIPTION AD adsorption dryers are designed for the continuous separation of water vapor from the compressed air to reduce the pressure dew point. The AD-Series dryer consists of two columns filled with treble beds, control with LCD display, valves, gauges, support structure and suitable filter housings with the required filter element. The adsorption is carried out under pressure in the first column, while the second column is regenerated with a portion of already dried compressed air at ambient pressure. When the first column is saturated to some degree, column switching is performed and the adsorption process continues in the second column without pressure drop at the outlet of the dryer. The regeneration of saturated desiccant is possible because a small portion of the already dry compressed air is decompressed and becomes extremely dry during expansion.

Net €7,840.00 €9,329.60*

DRYBERG® AD150 CT Adsorption Dryer

Adsorption dryers heatless oil free DRYBERG® AD150 CT Unmatched Purity: Achieving Class 1.2.0 Compressed Air Quality with DRYBERG® AD150-1200CT The DRYBERG® AD150-1200CT is engineered to deliver compressed air quality that meets the stringent Class 1.2.0 standards. This level of purity is essential for industries where even trace amounts of contaminants can compromise processes or products. Utilizing advanced filtration and adsorption techniques, the dryer effectively removes moisture, oil, and particulates, ensuring that the compressed air is not only clean but also dry enough to prevent corrosion and equipment damage. Technical Data of Adsorption Dryer heatless oil free DRYBERG® AD150 CT Capacity* [m3/m] 2,5 Capacity* [m3/h] 150 Connection [inch] 1" Dimensions (AxBxCxD) [mm] 1305x853x1220x650 Weight [kg] 251 Min. pressure [bar g] 4 Max. pressure [bar g] 16 Power supply 230 V / 50-60 Hz AC Residual oil content at 20 °C [mg/m³] 0,003 Pressure dew point [°C] -40 *calculated at 1 bar (abs.) and 20°C at 7 bar g operating pressure and 35 °C compressed air inlet temperature (saturated condition) Operating pressure (bar g) 4 5 6 7 8 9 10 11 12 13 14 15 16 Inlet Temp.(°C) 35 0,6 0,7 0,8 1 1,1 1,2 1,3 1,5 1,5 1,6 1,6 1,7 1,7 40 0,5 0,6 0,7 0,8 0,9 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,7 45 0,4 0,5 0,5 0,6 0,7 0,8 0,9 1 1 1,1 1,2 1,3 1,4 >45 0 0 0 0 0 0 0 0 0 0 0 0 0

Net €11,830.00 €14,077.70*

DRYBERG® AD180 CT Adsorption Dryer

Adsorption dryers heatless oil free DRYBERG® AD180 CT Oil-Free Excellence: The Complete Package for Efficient Drying Solutions One of the standout features of the DRYBERG® AD150-1200CT is its oil-free operation. This technology eliminates the risk of oil contamination in compressed air systems, making it ideal for applications in food processing, pharmaceuticals, and electronics manufacturing. By using a combination of cold adsorption and activated carbon filters, the dryer ensures that air quality remains pristine, thus enhancing the reliability and efficiency of downstream equipment. Technical Data of Adsorption Dryer heatless oil free DRYBERG® AD180 CT Capacity* [m3/m] 3 Capacity* [m3/h] 180 Connection [inch] 1" Dimensions (AxBxCxD) [mm] 1420x853x1220x650 Weight [kg] 284 Min. pressure [bar g] 4 Max. pressure [bar g] 16 Power supply 230 V / 50-60 Hz AC Residual oil content at 20 °C [mg/m³] 0,003 Pressure dew point [°C] -40 *calculated at 1 bar (abs.) and 20°C at 7 bar g operating pressure and 35 °C compressed air inlet temperature (saturated condition) Operating pressure (bar g) 4 5 6 7 8 9 10 11 12 13 14 15 16 Inlet Temp.(°C) 35 0,6 0,7 0,8 1 1,1 1,2 1,3 1,5 1,5 1,6 1,6 1,7 1,7 40 0,5 0,6 0,7 0,8 0,9 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,7 45 0,4 0,5 0,5 0,6 0,7 0,8 0,9 1 1 1,1 1,2 1,3 1,4 >45 0 0 0 0 0 0 0 0 0 0 0 0 0

Net €13,590.00 €16,172.10*

DRYBERG® AD20 Adsorption Dryer

Adsorption Dryer DRYBERG® AD20 Is an air dryer necessary? Definitely yes, Excessive and dense water in your compressed air flow can reduce the quality of your product and in addition cause serious damage and corrosion and rust in equipment and plumbing.

Net €1,920.00 €2,284.80*

DRYBERG® AD210 Adsorption Dryer

Adsorption Dryer DRYBERG® AD210 Adsorption Dryer DRYBERG® Switch-over Once the regeneration process is done the pressure build up in the vessel is started by closing the purge valves. After reaching the operating pressure the air flow is changed from the adsorbing vesel to the freshly regenerated vessel. Adsorption now commences in the freshly regenerated vessel, while the other vessel enters its regeneration cycle.

Net €9,560.00 €11,376.40*

Conclusion

The pressure dew point is a critical factor for compressed air quality and should not be neglected in any compressed air system. By using suitable dryers and measuring technology, you can significantly improve the quality of your compressed air and optimize your production processes. At Berg Compressors, you will find a variety of products that help you achieve the best possible compressed air quality.

For more information and personalized advice, we are happy to assist you.

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