Compressed Air Dew Point Audits
Measure Moisture Levels Throughout Your Compressed Air System
A compressed air dew point audit evaluates moisture conditions across your facility and determines whether air dryers are providing air that meets your application requirements.
N2O2 measures dew point at air dryers and multiple locations throughout the plant, identifies areas of concern, and compares the results with applicable ISO 8573 compressed air quality standards.
What Does Dew Point Tell You About Compressed Air?
Dew point indicates the temperature at which water vapor in compressed air will begin to condense.
Monitoring dew point helps determine whether the compressed air is dry enough for the equipment and processes it supports. It can also show whether moisture is entering the system, a dryer is underperforming, or air quality changes as compressed air moves through the facility indicating other problems like hysteresis.
A dew point audit provides measured data rather than relying only on dryer alarms, equipment ratings, or visible water in the lines. This is helpful in verifying dewpoint indicators on the dryer itself, since most indicators fail to the negative as they fall out of calibration.
When Should You Consider a Dew Point Audit?
A dew point audit may be appropriate when your facility is:
- Finding water or moisture in compressed air lines
- Experiencing recurring condensate problems
- Unsure whether air dryers are operating effectively
- Seeing moisture-related issues in pneumatic equipment
- Concerned about product or process air quality
- Experiencing changes in air quality between plant areas
- Trying to verify compliance with an internal air quality requirement
- Preparing to replace, repair, or resize an air dryer
The audit helps determine where moisture concerns are occurring and whether dryer performance aligns with facility requirements.
How Is Dew Point Evaluated?
N2O2 performs a facility-wide dew point analysis that includes all compressed air dryers and multiple points within the distribution system.
The evaluation may include:
- Dew point measurements at each air dryer
- Testing at multiple downstream plant locations
- Comparison of moisture conditions across the facility
- Review of dryer performance
- Identification of problem or concern areas
- Comparison with applicable ISO 8573 air quality classifications
- Review of how moisture conditions affect facility applications
Testing multiple locations helps determine whether the concern originates at the dryer or develops elsewhere in the compressed air system.
What Can Affect Compressed Air Dew Point?
Moisture conditions can be influenced by more than the dryer alone.
Potential contributing factors may include:
- Dryer performance or capacity
- Changes in compressed air demand
- Operating pressure
- Ambient temperature and seasonal conditions
- Bypass valves or system configuration
- Drain performance
- Distribution piping conditions
- Air entering downstream of the dryer
- Improperly sized or maintained air treatment equipment
The audit findings help narrow down which conditions should be investigated or corrected.
What Can a Dew Point Audit Help Your Facility Achieve?
The results can help your team:
- Identify the source of moisture in compressed air lines
- Confirm whether dryers are meeting required conditions
- Protect pneumatic equipment from moisture-related damage
- Reduce corrosion and condensate concerns
- Support consistent product and process quality
- Determine whether dryer repairs or upgrades are needed
- Compare air quality across different plant areas
- Make air treatment decisions based on measured conditions
The objective is to match compressed air quality with the actual requirements of the facility rather than producing air that is either too wet or unnecessarily dry.
Verify the Moisture Conditions in Your Compressed Air System
Request a compressed air dew point audit to evaluate dryer performance, identify moisture concerns, and determine whether air quality meets your facility requirements.