Online dew point transmitter
Monitor a fixed point in a bypass downstream of the compressed air dryer.
Portable and online dew point measurement
Compressed air dew point meters for testing and monitoring
Compare portable dew point meters for service checks with online dew point transmitters for continuous dryer and pneumatic-line monitoring.
Portable dew point testingMultiple test points and service checks
Online dryer monitoringContinuous measurement after the dryer
How to test compressed air dew point
Compressed air dryer testing compares the measured pressure dew point with the required dryness at the dryer outlet or a critical user point. Stable pressure, controlled sample flow and a suitable measuring range help make readings repeatable.
Portable testing and online monitoring points
Choose the measurement point and instrument format according to pressure, expected dryness, sampling method and alarm requirements.
Portable dew point meter
Check multiple dryer outlets and distribution points during service inspections.
Dryer outlet testing
Confirm dryer performance and detect moisture excursions after the dryer.
Selection focusMinimum dew point, pressure and response time
Critical user point
Verify air quality before pneumatic or process equipment.
Selection focusInstallation point, process connection and sample flow
Quality records
Document moisture conditions for quality-critical production processes.
Selection focusOutput signal, logging and calibration
Choose a portable or online dew point meter
Start with the operating task, then confirm pressure, sampling and control requirements.
Portable dew point meter
Use a portable analyzer for dryer testing, commissioning and checks across multiple test points.
Online dew point transmitter
Use a fixed transmitter for continuous monitoring, alarms and connection to a control system.
Pressure and sampling
Confirm line pressure and choose direct mount, sample cell, bypass or a portable sampling kit.
Output, alarms and logging
Specify local display, relay, analog output, digital communication or data logging.
What to specify in your request
- Gas type
- Working pressure
- Expected dew point range
- Required accuracy
- Installation point
- Output signal and power
- Display or alarm needs
- Quantity and documentation needs
Recommended instruments
Portable and online dew point meters for compressed air
Compare instruments for portable dryer testing, permanent monitoring, pneumatic lines and dry process gases.
Michell
Easidew 34 / Easidew M12
Compact Easidew 34 / Easidew M12 dew-point transmitter for OEM dryers, compressed air, hydrogen and process gases, with MiniDIN or M12 connection for safe and hazardous areas. Request price, availability and a quotation for Easidew 34 / Easidew M12.
- Range: -110 to +20 deg Cdp
- Accuracy: +/-2 deg Cdp
- Dew point or ppmV output
Michell
Easidew Online
Easidew Online dew-point hygrometer for continuous monitoring in dryers, breathing air, hydrogen and glove boxes, with local display and alarm functions. Request price, availability and a quotation for Easidew Online.
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Michell
SF82 Online
SF82 Online dew-point hygrometer for compressed air, medical air, dryers and additive manufacturing, with sampling system and Modbus RTU. Request price, availability and a quotation for SF82 Online.
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VAISALA
DMT143 / DMT143L
DMT143 / DMT143L miniature dew-point transmitters for industrial dryers, compressed air dew point testing, OEM equipment and dry process gases. Request price, availability and a quotation for DMT143 / DMT143L. Configuration is confirmed by installation point and project conditions.
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Michell
MDM300 / MDM300 I.S.
Portable MDM300 / MDM300 I.S. dew-point hygrometer for rapid spot checks in compressed air and natural gas. Request price, availability and a quotation for MDM300.
Learn more >Frequently asked questions
How do I test dew point in compressed air?
Measure at a representative point after the dryer or near a critical user. Confirm whether the reading must be pressure dew point, keep the sample conditions stable and use an instrument suited to the expected dry range.
When should I use a portable dew point meter?
A portable meter is suitable for service checks, commissioning and comparing several dryer outlets or distribution points without installing a permanent instrument at each location.
When should I use an online dew point transmitter?
An online transmitter is suitable for continuous monitoring, alarm thresholds and connection to a control or data-logging system at a fixed measurement point.
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.
Need a compressed air dew point meter?
Send the pressure, expected dew point range, measurement point and portable or online requirement. We will match suitable models and quote international supply from China, with delivery and customs-clearance responsibilities agreed for the destination country.