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PTU300 Combined Pressure, Humidity and Temperature Transmitter for Demanding Applications

​The Vaisala Combined Pressure, Humidity and Temperature Transmitter PTU300 is a unique instrument measuring three parameters simultaneously.
  • Four probe options:
    • PTU301 for laboratories
    • PTU303 for general use
    • PTU307 warmed probe for outdoor and demanding meteorology applications
    • PTU30T for pressure and temperature measurement only
  • 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, WLAN/LAN
  • Optional universal power supply module
  • NIST traceable calibration (certificate included)
  • HMT330MIK Installation kit for outdoor use
  • Applications include environmental monitoring in calibration laboratories, industrial applications, GPS meteorology: estimating precipitable water vapor in the atmosphere, weather stations


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    • Service Center Calibration 
    • Regular calibration ensures that your Vaisala equipment continues to provide accurate, high-quality data. We offer traceable, standards-compliant calibration services for almost all Vaisala products and partner with world-class couriers for rapid, trouble-free return of your equipment.
    • Spare Parts 
    • Get rapid access to the spare parts you need to maximize the uptime of your equipment and ensure reliable and accurate operation. In addition to standard spare part delivery, we also offer an express service where parts are shipped within one business day.
    • Repair Services 
    • Vaisala repair services include fault tracing and repair or replacement of failed components, as well as final testing to ensure your equipment is functioning properly. Repairs can be carried out on site or at one of our service centers.
    • Warranty, 10-year 
    • Vaisala HMT330 Series is covered by an exceptional 10-year warranty for customers who calibrate the units annually at the Vaisala Service Center. Otherwise standard 24-month warranty applies. During the warranty period you benefit from free repair or replacement of faulty equipment.
    • Warranty 
    • All Vaisala products and services are covered by a 12-month warranty as standard, with selected products covered for up to 24 months. During this period you benefit from free repair or replacement of faulty equipment.