MICHELL
Easidew 34 / Easidew M12
- Range: -110 to +20 deg Cdp
- Accuracy: +/-2 deg Cdp
- Dew point or ppmV output
Compressed air dew point testing
Compressed air dew point testing and monitoring
Dew point meters, transmitters and hygrometers for compressed air dew point testing, dryer checks, OEM skids and dry process gases.
Application overview
Why dew point testing matters in compressed air
Compressed air dew point monitoring and testing show whether a dryer and distribution line are keeping moisture under control. Reliable monitoring helps protect pneumatic equipment, instruments, production processes and quality-critical applications.
Dryer testing
Continuous or periodic dew point testing after refrigerant or adsorption dryers.
Pipeline test points
Direct installation, sampling line or bypass according to process conditions.
Alarm and output
Local display, relay alarm and analog output for control systems.
Selection path
How to choose a dew point testing instrument
1
Testing target
Define the expected dry range, alarm threshold and whether the task is permanent monitoring or service testing.
2
Pressure
Confirm line pressure and whether pressure dew point is required.
3
Installation
Choose direct mount, sample cell, bypass or portable kit.
4
Output
Specify display, alarm relay, analog output or digital communication.
Recommended instruments for compressed air dew point testing
Compact dew point transmitters for dryer outlet monitoring
Online hygrometers with local display and alarm functions
Portable dew point analyzers for service checks
OEM transmitters for compressed-air dryer integration
Recommended products
Suitable instruments
MICHELL
Easidew Online
- Range: -100 to +20 deg Cdp
- 0-3000 ppmV option
- 4-20 mA or 0-20 mA output
MICHELL
SF82 Online
- Range: -60 to +60 deg Cdp
- Accuracy +/-2 deg Cdp
- 4-20 mA output
VAISALA
DMT143 / DMT143L
- Dew-point measurement in dry gases
- Miniature transmitter design
- Standard and long probe versions
MICHELL
MDM300 / MDM300 I.S.
- Accuracy +/-1 deg Cdp from -60 to +20 deg Cdp
- T95 to -60 deg Cdp in under 15 minutes
- Pressure measurement up to 350 barg
FAQ
Common questions
How do I test dew point in compressed air?
Use an online transmitter for permanent monitoring or a portable dew point analyzer for service checks. The right method depends on line pressure, expected dryness, sample point and whether alarms or data logging are required.
Why measure dew point in compressed air?
Dew point shows the amount of moisture in compressed air. Monitoring helps prevent corrosion, icing, product contamination and dryer failure.
Where should the sensor be installed?
Common locations include the dryer outlet, critical branch lines, process air supply points and quality-control test points.
Do I need an online or portable instrument?
Online instruments are best for permanent monitoring and alarms. Portable analyzers are useful for checking multiple points, maintenance and periodic audits.
What data is needed for model selection?
Specify gas, pressure, expected dew point range, installation method, output requirements, display or alarm needs and operating conditions.