Vaisala PTU300 Combined Pressure, Humidity & Temperature Transmitter


  • Barometric pressure, humidity and temperature measurement in one transmitter
  • Available with up to two barometric pressure sensors – for added reliability
  • Graphical display and keypad for convenient operation
  • Integrated data logging with over four years of measurement history
  • RS-232C serial interface with NMEA protocol for GPS use
  • Analog outputs, RS232/485
  • Optional universal power supply module
  • Traceable calibration to national standards (certificate included)
  • HMT330MIK Installation kit for outdoor use
  • Incorporates HUMICAP and BAROCAP sensor technologies

Dpstar is a leading supplier of environmental measurement sensors for temperature, relative humidity, pressure, dew point, CO2, and other environmental condition monitoring for industrial process application and research. Since the ’90s, we earned a reputation as a trusted partner to our clients through our commitment and dedication. We are an authorized distributor and supplier of measuring sensors solutions from renowned manufacturers Vaisala. Vaisala is a global leader in environmental and industrial measurement. Building on 80 years of experience, Vaisala provides observations for a better world. Vaisala is a reliable partner for customers around the world, offering a comprehensive range of innovative observation and measurement products and services.

Vaisala PTU300 is a special device that measures three things at once: barometric pressure, humidity, and temperature. It comes with four humidity probe options to fit different measurement requirements. Thanks to its dependable HUMICAP and BAROCAP sensor technologies, it’s perfect for various applications like engine testing booths, calibration labs, and monitoring marine engine air intake.


Key Benefits

Probes Tailored To Your Application

Probe options designed specifically for laboratories (PTU301), general use (PTU303), outdoor and demanding meteorology applications (PTU307), or for pressure and temperature measurement only (PTU30T).

1 Transmitter, 3 Measurements

Unique combination of a meteorological grade barometer combined with humidity and temperature measurement in single, industrial grade device.


The device is tailored for each delivery and delivered pre-configured and ready for installation. Settings can be also easily changed on the field by the user.


  • Environmental monitoring in calibration laboratories.
  • Industrial applications in semiconductor industry, engine testing and maritime sector.
  • GPS meteorology: estimating precipitable water vapor in the atmosphere, weather stations


Vaisala PTU300 Combined Pressure, Humidity & Temperature Transmitter_DpstarGroup