Vaisala DPT146 Dewpoint Transmitter
Starting at $1,696.00

Not in stock. Usually ships in 2-3 weeks [?]

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  • Measurement parameter
    • Dew point temperature
    • Absolute pressure
    • Temperature (with "RS485 only" output option)
  • Caluculated Parameters
    • Dew point converted to atmospheric pressure
    • ppm volume concentration
  • Measurement range
    • Dewpoint: -60 to 30 °C (-76 to 86 °F)
    • Pressure: 1 to 10 bar (14.5 to 145 psi)
  • Measurement accuracy
    • Dewpoint: ±2 °C (± 3.6 °F) Td
    • Pressure: ±0.4 %FS at 23 °C (73 °F)
  • Operating voltage: 21 to 28 VDC
  • Analog and digital outputs
  • IP65 (NEMA 4X) housing

The Vaisala DPT146 dew point and pressure transmitter is the ideal choice for anyone using or monitoring compressed air. As the first transmitter that monitors both dew point and process pressure simultaneously, the DPT146 provides two of the most important compressed air measurements meaning reduced installation costs and a much easier setup – with only one instrument needing connection and wiring.

Dew point measurement combined with process pressure measurement offers further unique advantages. For the first time, dew point data – whether calculated to atmospheric pressure or providing ppm – is constantly pressure compensated online and in real-time so there is no ambiguity in the information. Additionally, temperature measurement is also available when the RS485 serial line is in use.

The DPT146 combines the knowledge of more than 20 years of sensor technology development. Proven measurements from the DRYCAP® sensor for dew point and the BAROCAP® sensor for pressure provide accurate measurements. The DPT146 is fully compatible with the Vaisala DM70 hand-held dewpoint meter. The DM70 can also be used as a local display and data logger for monitoring all measured parameters.


Vaisala 219690 USB Cable
Connect transmitters to a PC via a standard type A USB port
Vaisala MI70 Calibration Cable
6.5ft (2m) connection cable for calibrating and field-checking instruments that include MI70 indicators


Please consider these optional accessories.

Vaisala DMT242SC Basic Sampling Cell
Basic sample cell with only the main sampling cell body
In Stock
Vaisala DMT242SC2 Sampling Cell
Sampling cell with 1/4 inch Swagelok connectors
Vaisala DSC74 Sampling Cell
Sampling cell with quick connector and leak screw
Vaisala DSC74B Sampling Cell
Two pressure sampling cell
Vaisala NPT Plug
NPT1/2" plug for the DMT132
Vaisala ISO Plug
ISO" 1/2 plug for the DMT132
Vaisala Sealing Ring Set
Sealing ring set (3 pcs U-seal) for the DMT132
Vaisala Loop Powered External Display
Nokeval loop-powered external LCD display with optional alarm relays


This product can be used in the following applications: