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     PTU300 Pressure Humidity and Temp
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Vaisala PTU300 Combined Pressure, Humidity and Temperature Transmitter
Vaisala Instruments

PTU300 Combined Pressure, Humidity and Temperature Transmitter

Vaisala PTU300 Combined Pressure, Humidity and Temperature Transmitter

Measures humidity, temperature, and barometric pressure in two accuracy classes. The PTU300 series features a large numerical and graphical display. Optional data logging and (W)LAN interface.

  • Barometric pressure, humidity and temperature measurement in one transmitter
  • Available with two barometric pressure sensors - for added reliability
  • RS-232C serial interface with NMEA protocol for GPS use
  • Optional display, RS-485, analog output, and relay
  • Optional power supply module
  • NIST traceable calibration
  • HMT330MIK Installation kit for outdoor use
  • Applications include environmental monitoring in calibration laboratories, GPS meteorology: estimating precipitable water vapor in the atmosphere; weather stations
  • Integrated data logging, with over four years of measured histor
  • LAN and WLAN communication option
PDF File Datasheet PDF File Order Form PDF File User Guide
Barometric pressure measurement

Measurement range

Accuracy at +20 °C
     Class A 500 ... 1100 hPa
     Class B 500 ... 1100 hPa
     50 ... 1100 hPa

Total accuracy  (-40...+60 °C/
-40...+140 °F)
     Class A 500 ... 1100 hPa
     Class B 500 ... 1100 hPa
     50 ... 1100 hPa

Long-term stability
     Class A 500 ... 1100 hPa
     Class B 500 ... 1100 hPa
     50 ... 1100 hPa

Sensor

500 ... 1100 hPa, 50 ... 1100 hPa


±0.10 hPa
±0.20 hPa
±0.30 hPa



± 0.15 hPa
± 0.25 hPa
± 0.45 hPa


± 0.1 hPa
± 0.1 hPa
± 0.2 hPa

Vaisala BAROCAP®

Relative humidity measurement

Measurement range
Accuracy (including non-linearity and hysteresis)
        at +15 … +25 °C


Sensor

0 ... 100 %RH

± 1 %RH (0 … 90%)
± 1.7 %RH (90 … 100%)

Vaisala HUMICAP®180
Vaisala HUMICAP® 180R

Temperature measurement

Measurement range
Accuracy
         at -40 °C (-40 °F)
         at +20 °C (68 °F)
         at +60 °C (140 °F)

Sensor

-40 ... +60 °C (-40 ... +140 °F)

± 0.4 °C (±0.8 °F)
± 0.2 °C (±0.4 °F)
± 0.3 °C (±0.6 °F)

Pt100 RTD 1/3 Class B IEC 751

Operating environment

Temperature range
        with display
Humidity range

-40 ... +60 °C (-40 … +140 °F)
0 ... +60 °C (+32 … +140 °F)
non-condensing

Inputs and outputs
Operating voltage
        with an optional power
        supply module
Analog outputs (optional)
        current outputs
        voltage output

Serial interface

Ethernet interface (optional)
        Supported standards
        Connector
        Protocols
WLAN interface (optional)
        Supported standards
        Antenna connector type
        Protocols
        Security
Authentication / Encryption
        Open / no encryption
        Open / WEP
        WPA Pre shared key / TKIP
        WPA Pre shared key / CCMP (a.k.a. WPA2)

Optional data logger with
real-time clock
        Logged parameters
        Logging interval
        Max. logging period
        Logged points
        Battery lifetime

Display
10 ... 35 VDC

100 … 240 VAC

0 … 20 mA, 4 … 20 mA
0 … 1 V, 0 … 5 V, 0 … 10 V

RS-232C, RS-485


10/100Base-T
RJ45
Telnet

802.11b
RP-SMA
Telnet
WEP 64/128,WPA








max. three with trend/min/max values
10 sec (fixed)
4 years 5 months
13,7 million points per parameter
min. 5 years

LCD with graphic trend display
Calculated quantities

Humidity parameters






Pressure parameters

Dewpoint temperature (Tdp)
Absolute humidity (a)
Mixing ratio (x)
Wet bulb temperature (Tw)
Water vapour pressure (Pw)
Entalphy (h)

QNH Pressure
QFE Pressure
Height corrected pressure HCP
WMO Pressure tendency code


PTU300 Pressure Humidity and Temp



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