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Dewpoint Transmitters for High Temperature Applications


The DMT345 and DMT346 are constructed for direct measurement in hot processes. Therefore, there is no need for sampling systems and trace heating. As a result, high accuracy and constancy are maintained.

The accuracy and stability of the DMT345 and the DMT346 are due to the unique auto-calibration function, patented by Vaisala. This autocalibration makes the transmitter perform a calibration and adjustment by itself while the measured process is
running. If the measurement accuracy is not confirmed, corrections are made automatically. The procedure is so quick and corrections are so minor that it will go unnoticed. This ensures low maintenance and high performance.

In normal conditions, it is recommended to have a traceable calibration

Technical Specs

Model DMT345, DMT346
Fixed / Portable Fixed
Tolerance Maximum temperature: 350 deg C
Maximum pressure:
Measurement Range -40 to 100 deg C Td
Accuracy Dewpoint accuracy +- 2 deg C
Output Analog outputs, WLAN/LAN
Accessories Datalogger, installation kits
Remarks The DMT345 measures humidity in temperatures up to 180C (356 F)
The DMT346 measures humidity in temperatures up to 350 C (+662 F)
Dewpoint accuracy 2 C (3.6 F)
Vaisala DRYCAP Sensor provides accurate, reliable measurement with excellent long-term stability and fast response
Withstands condensation
Unique auto-calibration feature
Optional local display with keypad, mains power supply module and alarm relays
NIST traceable calibration(certificate included)
Analog outputs, WLAN/LAN

Data sheet

CatalogueProduct Selection Form



See also
Dewpoint Transmitters for High Temperature Applications
The DMT345 and DMT346 are constructed for direct measurement in hot processes. Therefore, there is no need for sampling systems and trace heating. As a result, high accuracy and constancy are maintain.....


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