PTU300 Combined Pressure, Humidity and Temperature TransmitterFor Demanding Applications Features • Barometric pressure, humidity, and temperature measurement in one transmitter • RS-232C serial interface with NMEA protocol for GPS use • Graphical display and keypad for convenient operation • Analog outputs, RS-232/485, LAN • Modbus protocol support (RTU/ TCP) • Traceable to international standards Options • Available with up to two barometric pressure sensors for added reliability • Optional universal power supply module • HMT330MIK installation kit for outdoor use You can choose from the following probe options: PTU301 for wall mounting for example in laboratories or engine rooms, PTU303 for general use, PTU307 warmed probe for outdoor and demanding meteorology applications, and PTU30T for pressure and temperature measurement only. Proven Vaisala Sensor Technology PTU300 incorporates sensors known for their high accuracy and excellent longterm stability: Vaisala BAROCAP® for pressure measurement and Vaisala HUMICAP® for humidity measurement. The temperature sensor is a platinum RTD sensor. Graphical Display of Measurement Data and Trends for Convenient Operation PTU300 features a large numerical and graphical display with a multilingual menu and keypad. It allows users to easily monitor operational data, measurement trends, and access measurement history for the past 12 months. The optional data logger, with real-time clock, makes it possible to generate over four years of measurement history and zoom in on any desired time or time frame. The display alarm allows any measured parameter to be tracked, with freely configurable low and high limits. Versatile Outputs and Data Collection PTU300 comes with a standard RS-232 serial interface. The output format is compatible with major GPS receivers and NMEA-coded messages. An isolated RS-485 interface is available as an option. PTU300 is also capable of applying the Modbus communication protocol and, together with an appropriate connection option, provides either Modbus RTU (RS-485) or Modbus TCP/IP (Ethernet) communication. The data logger records data that can be viewed on the local display or transferred to a PC with Microsoft® Windows® software. The transmitter can also be connected to a network with an optional LAN interface, which enables an Ethernet connection. A USB service cable makes it easy to connect PTU300 to a PC via the service port. Outdoor Installation Kit Outdoor installation is possible using the optional HMT330MIK installation kit, for applications requiring reliable measurements for meteorological purposes. Flexible Calibration Quick, one-point field calibration for humidity is easy using Vaisala Hand-Held Humidity Meter HM70.

With Vaisala Barometric Pressure Transfer Standard PTB330TS, including optional humidity and temperature probe, field check and calibration can be performed for all three parameters. • 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

Operating Environment Measurement Performance Barometric Pressure Pressure range 500 ... 1100 hPa 50 ... 1100 hPa dependence Total accuracy ±0.15 hPa ±0.25 hPa ±0.45 hPa stability/year Response Time (100 % Response): One sensor 2 s 1s 1 s Pressure units hPa, mbar, kPa, Pa, inHg, mmH20, mmHg, torr, psia Relative Humidity Measurement range 0 ... 100 %RH Accuracy (Including Non-linearity, Hysteresis, and Repeatability): At +15 ... +25 °C / +59 ... +77 °F ±1 %RH (0 ... 90 %RH) Factory calibration uncertainty ±0.6 %RH (0 . 40 %RH) (Defined as ±2 standard deviation limits. Small variations possible,...

Inputs and Outputs Operating voltage 10 ... 35 VDC, 24 VAC ±20 % With optional power supply module 100 ... 240 VAC, 50/60 Hz C€ VAISALA www.vaisala.com Published by Vaisala | B210954EN-G © Vaisala 2018 All rights reserved. Any logos and/or product names are trademarks of Vaisala or its individual partners. Any reproduction, transfer, distribution or storage of information contained in this document is strictly prohibited. All specifications — technical included — are subject to change without notice.