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Sensors & Transmitters
   Data Acquisition
   pH and ORP
   Relative Humidity / Dewpoint
     RH Fixed Installation
     RH Portable Instruments
     Probes and OEM Modules
       DMT242 Dewpoint Transmitter
       DMT152 Dewpoint Transmitter
       DMT142 Dewpoint Transmitter
       HMP155 Humidity &Temp Probe
       HMP50 Humidity and Temp Probe
   Differential Pressure
   Carbon Dioxide
   Nitrogen Dioxide
   Carbon Monoxide
   Smoke Detectors
   Current Sensors
   Proximity Sensors
   Photoelectric Sensors
   Safety Light Curtains
   Cables and Distribution Boxes
   Oxygen Transmitters


Tel: 1-925-706-7433

Vaisala DMT142 Dewpoint Transmitter
Vaisala Instruments

DMT142 Dewpoint Transmitter

Vaisala DMT142 Series

Miniature dewpoint measurement instrument for industrial OEM applications like air dryers or plastic dryers.
The Vaisala DRYCAP® Dewpoint Transmitter DMT142 is a miniature dew point measurement instrument. The transmitter can be installed directly into pressurized systems at 50 bar (725 psia) maximum pressure. The long-term high performance is achieved with Vaisala DRYCAP® technology. The sensor fully withstands getting wet, and therefore, the transmitter performs exceptionally well in applications that occasionally experience process water spikes, such as pipeline condensation during a system failure or start-up. The sensor is also immune to particulate contamination, oil vapor and most chemicals, and is insensitive to the flow rate.

Long calibration interval
The calibration interval of the DMT142 is two years. Additionally, the Vaisala DRYCAP® Hand-Held Dewpoint Meter DM70 can be used to confirm the performance of the DMT142 without disconnecting the transmitter. For any adjustment needs, the transmitter can be sent to Vaisala Service. The auto-calibration software works on-line while the process is running. If the measurement accuracy is not confirmed, corrections are made automatically.

  • Miniature size dew point transmitter for e.g. small industrial dryer applications
  • Vaisala DRYCAP® technology with auto-calibration
  • Calibration interval of two years
  • Dew point measurement range -60 ... +60 °C (-76 ... +140 °F) with an accuracy ±3 °C (±5.4°F)
  • Withstands condensation
  • Fast response time
  • Compatible with Vaisala DRYCAP® Hand-Held Dewpoint Meter DM70
  • NIST traceable (certificate included)
PDF File Datasheet

FOR OEM PRICING: Call us at 1-925-706-7433 or E-Mail:

Dewpoint temperature measurement

Standard version
     Measurement range
     Accuracy (-50 ... +60 °C /
     -58 ... +140 °F)
Extended version
     Measurement range
     Accuracy (-60 ... +60 °C /
     -76 ... +140 °F)

-60 ... +60 °C (-76 ... +140 °F) Td
± 3 °C (± 5.4 °F) Td

-80 ... +60 °C (-112 ... +140 °F) Td
± 3 °C (± 5.4 °F) Td

Vaisala DRYCAP® 180D

ppmvolume concentration measurement

Measurement range
Accuracy at +20 °C (+68 °F), 1013 mbar

70 ... 200 000 ppm
7.3 ppm + 9.2 % of reading

Operating environment

Relative humidity

0 ...+60 °C (+32 ... +140 °F)
0 ... 100 %RH
0 ... 20 bara(290 psia)

Inputs and outputs

Operating voltage
     with voltage output
     with current output
Analog output (scalable)

12 ... 28 VDC
18 ... 28 VDC
4 ... 20 mA (3-wire)
0 ... 1 V
0 ... 5 V


Material (housing)
Housing classification

118 g (4.16 oz)
stainless steel body (AISI 316L), plastic cap (ABS/PC)
IP65 (NEMA 4)

DMT142 Dewpoint Transmitter

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