Catalog Of Dew Point Meters

Full Line of Dew Point Meters and Monitors

The dew point is the saturation temperature for water in the air. It is the temperature at which the water vapor in a sample of air at constant barometric pressure condenses into liquid water at the same rate at which it evaporates. The dew point is associated with relative humidity. A high relative humidity implies that the dew point is closer to the current air temperature. Relative humidity of 100% indicates the dew point is equal to the current temperature and that the air is maximally saturated with water. At temperatures below the dew point, some of the moisture will condense.

The hydrocarbon dew point of a gas is a different concept from the water dew point. The hydrocarbon dew point is the temperature (at a given pressure) at which the hydrocarbon components of any hydrocarbon-rich gas mixture, such as natural gas, will start to condense out of the gaseous phase. (Source: Wikipedia)

buy now

Dew Point / Moisture / Humidity Meters & Monitors

COSA On-Line Dew Point Meters XDT Series


Model XDT is available in three executions: XDT-NEMA, for outdoor and hazardous area installation (hazardous area certifications optional); XDT-DIN, for panel mount applications and XDT-OEM for integration into existing enclosures. More »

COSA Loop-Powered Dew Point Meters LPDT Series


Xentaur’s Model LPDT is the world’s smallest loop-powered (2-wire) dew point transmitter.The LPDT is also a fully functional instrument, featuring the well proven and easy to use interface, familiar to many. Set-up functions, result display of dew point, temperature and optionally pressure are accommodated by a miniature custom LCD display and three programming buttons. More »

COSA Portable Dew Point Meter XPDM Series


The Portable Dew Point Meter Model XPDM is a battery operated, hand-held instrument designed for situations where quick and accurate dew point measurements have to be made. With the XPDM, accurate spot-checks of moisture in air or gases can be made faster and easier than ever, over the range of -148°F to +68°F (-100°C to +20°C) dew point. More »

COSA Extractive Sample System (ESS)


Building sample systems for measuring dew point in gases is not an easy task . It requires experience and a complete understanding of the often unexpected behavior of water molecules. Selection of the proper materials, components and final system configuration will greatly influence the fidelity of the sample carried to the sensor. More »

COSA Mission Critical Process Moisture Analyzer MODEL ESS-SCVP


Taking advantage of the uniquely strong and quasi-linear response characteristics of its HTF™ aluminum oxide moisture sensors, COSA has developed a cost effective solution for demanding and mission critical moisture monitoring applications. More »

Electronic Humidity Alarms

The Electronic Humidity Alarm for Compressed Air Systems alarms when wet air is detected. Closing a contactor, a red alarm light is activated alerting to wet compressed air. More »

Color Change Indicators


We offer PUREGAS moisture indicators for compressed air systems. These units provide an inexpensive way to monitor moisture levels in your compressed air system using color change (blue to pink) as an indication on dry or wet air. More »