Vaisala DMT153 Transmitter for Low Dewpoint with a Measurement Range of -80 to -20 Degree C

DRYCAP® Dew Point Transmitter DMT153 is designed for measuring low dew point, even down to −80 °C (−112 °F) Td/f. DMT153 is the ideal choice for low-humidity industrial applications such as semiconductor and battery manufacturing, pure gas production, demanding compressed air systems, and applications using pure gases.

Features:

• Measures dew point down to −80 °C (−112 °F) Td/f
• Measurement accuracy up to ±2 °C (±3.6 °F) Td/f
• Operating pressure up to 50 bar (725 psi)
• RS-485 digital output with Modbus® RTU support
• Voltage (V) and current (mA) analog outputs
• Compatible with Vaisala Indigo products and Insight PC software
• Withstands condensation
• Sensor purge and autocalibration features improve long-term stability
• Traceable calibration certificate included

Beneficial for all applications requiring low dew point levels:

• unique research projects
• aerospace and defense
• specialized sensors
• critical compressed air lines
• critical air, nitrogen, argon, helium, and other inert gas lines  
• glove boxes and isolators
• pharmaceutical manufacturing, including certain Active Pharmaceutical Ingredients and lithium-based medical devices
• sensitive chemicals, catalysts, or metal powders or other components that might oxidize or hydrate when moisture is present

With the DMT153, you benefit from proven accuracy, fast response time, and full measurement traceability of low dew point measurements.  

Increase yield by minimizing disruptions

Humidity-related disruptions in industrial production environments can significantly impact yield and operational efficiency. Accurate dew point monitoring with the DMT153 transmitter enables early detection of unwanted humidity. Minimizing unplanned downtime and maintaining stable process conditions ensures higher product quality, reduces maintenance needs, and maximizes overall productivity.

Consistent performance despite changing conditions

The DMT153 transmitter's fast response time allows for immediate detection of humidity changes, supporting timely process adjustments. The DRYCAP sensor used in DMT153 tolerates condensing environments and is highly resistant to contamination, thanks to the sensor's purge functionality. The unique autocalibration feature minimizes drift and ensures longterm measurement accuracy.

Applications

Typical areas of use for DMT153 are semiconductor and battery manufacturing, pure gas production, demanding compressed air systems 1) and applications using pure gases. Suitable installation locations of the compact DMT153 include, for example, ducts, pipes, glove boxes, vacuum chambers, gas sampling lines, equipment or production lines, and test chambers.

Flexible connectivity

The DMT153 transmitter provides several output options, including analog voltage and current outputs and digital RS-485 output with Modbus RTU protocol. It can be used as a standalone digital transmitter over an RS-485 serial bus, or connected to Vaisala Indigo transmitters. For easy access to field calibration, device analytics, and configuration functionality, the transmitter can be connected to Vaisala Insight software for Windows® or the Indigo80 handheld indicator.

For more information, please see Data Sheet