Vaisala DMT348 Dewpoint and Temperature Transmitter

Rent Vaisala DMT348 Dewpoint and Temperature Transmitter
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Check out our other Dewpoint Meter - Vaisala DM70 Hand-held Dew Point Meter

The Vaisala DMT348 Dewpoint and Temperature Transmitter is a stable and reliable transmitter especially suitable for desiccant dryer monitoring. The stability is due to a unique auto-calibration function. During auto-calibration the transmitter performs a calibration and adjustment automatically while the measured process is still running.

The Vaisala DRYCAP® sensor is immune to particulate contamination, water condensation, oil vapor and most chemicals. Its performance is unmatched for low dew point applications experiencing water spikes in the process. The sensor recovers rapidly from contact with freewater. The DMT348 is ideal for pressurized processes where the probe needs to be inserted or removed while the process is running. The probe depth is adjustable. The DMT348 is optimized for dew points down to -60°C (-76°F).


Measurement parameter(s) Dew point temperature
Absolute humidity*
Dew point converted to atmospheric pressure*
Mixing ratio*
ppm volume and weight concentration*
Relative humidity*
Temperature difference*
Water vapor pressure*
Measurement range -60 ... +80 °C (-76 ... +176 °F) Td
0 ... +80 °C (+32 ... +176 °F) T
Measurement accuracy ±2 °C (± 3.6 °F) Td
±0.2 °C (±0.36 °F) T
Operating temperature -40 ... +80 °C (-40 ... +176 °F)
Operating pressure 0 ... 40 bar (0 ... 580 psi)
Operating voltage 10 ... 35 VDC, 24 VAC
Analog outputs 4 ... 20 mA (default setting)
0 ... 20 mA
0 ... 1 V
0 ... 5 V
0 ... 10 V
Digital outputs RS-232
Housing classification IP65 (NEMA 4X)