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120
PTU300 Combined Pressure, Humidity and
Temperature Transmitter for Demanding Applications
One Transmitter, Three
Measurements
The Vaisala Combined Pressure,
Humidity and Temperature
The Vaisala PTU300 Combined Pressure, Humidity and Temperature Transmitter is
a versatile, multi-purpose instrument.
over four years of measured history,
and zoom in on any desired time or
time frame. The battery backup of the
real-time clock guarantees a reliable
logging of measured data.
The display alarm allows tracking of
any measured parameter, with a freely
configurable low and high limit.
Data Collection and
(Wireless) Transfer to PC
The recorded measurement data
can be viewed on the display or
transferred to a PC with Microsoft
Windows
®
software. The transmitter
can also be connected to a network
with an optional (W)LAN interface,
which enables a (wireless) Ethernet
connection.
A USB-RJ45 cable makes it easy
to connect the service port of the
PTU300 to a PC. PTU300 is also
capable in applying the MODBUS
communication protocol and together
with an appropriate connection
option provides either MODBUS
RTU (RS485) or MODBUS TCP/IP
(Ethernet) communication.
Flexible Calibration
A quick, one-point field calibration
for humidity can easily be done using
the Vaisala Hand-Held Humidity Meter
HM70.
Serial Communication
The PTU300 comes with a standard
RS-232 serial interface. The output
format is compatible with major GPS
receivers and NMEA coded messages.
RS-485 is available as an option.
Outdoor Installation Kit
The optional HMT330MIK Installation
Kit is available for outdoor installation.
It provides reliable measurements for
meteorological purposes.
Features/Benefits
▪
Barometric pressure, humidity
and temperature measurement
in one transmitter
▪
Available with two barometric
pressure sensors – 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
▪
Modbus protocol support
(RTU/TCP)
Transmitter PTU300 measures
barometric pressure in two accuracy
classes, humidity, and temperature.
You can choose which probe
best suits your needs: PTU301 for
laboratories, PTU303 for outdoor
use, the warmed PTU307 probe for
demanding meteorology, and PTU30T
for pressure and temperature only.
Vaisala Proven Sensor
Technology
The PTU300 transmitter uses
sensors known for their high
accuracy and excellent long-term
stability: the Vaisala BAROCAP
®
is
used for pressure measurement and
the Vaisala HUMICAP
®
for humidity
measurement. The temperature
sensor is a platinum RTD sensor.
Graphical Trend Display
The PTU300 series features a large
numerical and graphical display,
allowing users to easily monitor
operational data, measurement trends
and 1-year measurement history. The
optional data logger with real-time
clock makes it possible to generate
Pressure
- HUMIDITY / DEW POINT / 1
- PRESSURE / WEATHER 1
- ACC URATE 2
- Humidity 4
- Dew Point 4
- Mounting Options 9
- Graphical Display of 10
- History and 10
- Measurement Trends 10
- Outputs and Power Supply 10
- Options for Every Need 10
- Flexible Installation 11
- For Moderate Humidities 11
- Vaisala HUMICAP® 12
- Performance 12
- Measurement Trends and 12
- Real Time History 12
- 41 (1.6) 13
- 51 (2.0) 13
- 192 (7.56) 13
- 253 (9.96) 13
- 37.5 (1.48) 14
- 79.5 (3.13) 14
- 99.5 (3.92) 14
- Temperature Transmitters 16
- HMP361 for wall mounting 17
- HMP363 for confined spaces 17
- HMP364 for high pressure 17
- HMP365 for high temperature 18
- HMP367 for high humidities 18
- HMP368 for pressurized 18
- Transmitter 22
- Interchangeable Probe 24
- Fast, On-Site Calibration 26
- Measures both Humidity 26
- Resistant to Chemicals 28
- Vaisala INTERCAP 30
- Humidity and Temperature 30
- Transmitter Series HMW80 30
- HVACApplications 32
- Demanding Applications 34
- Unique Warmed Probe 34
- Vaisala HUMICAP® Sensor 34
- Chambers 36
- Probe HMP60 38
- Vaisala HUMICAP 40
- Probe HMP110 40
- Three Probes 42
- MI70 Link 42
- Reliable and Cost-ecient 47
- HVAC Products 47
- Fast and Easy-to-Use 48
- HMK15 Humidity Calibrator 50
- DTR500 Solar Radiation 54
- Versatile Outputs and 61
- (Wireless) Data Collection 61
- Easy Installation 61
- Probe Specifications 62
- Ensure dry 65
- Measure Humidity Directly 66
- DMT345, Accurate in Hot 66
- OEM Applications 70
- Low Maintenance 72
- Dewpoint temperature (°C) 75
- DMT132 Dewpoint Transmitter 76
- DEW POINT 77
- CALCULATED VARIABLES 77
- Indoor Applications 78
- 110 (4 .33) 79
- 85 (3.35) 79
- 33 (1.30) 79
- DSS70A Portable 82
- Sampling System 82
- Sampling Cells for 82
- Pressurized Processes 82
- Online Reliability 86
- Savings Across the Board 86
- Risk-Free, Greener 86
- Solution 86
- The Fruit of Experience 86
- Multiparameter Transmitter 88
- When Moisture is a Problem 89
- Knowledge is Power 89
- Literally 89
- Transmitter Series for Oil 90
- Moisture in Oil 90
- The Vaisala HUMICAP 91
- Hand-Held 91
- R1/2" ISO7/1 92
- Prevent it 95
- Transmitter for Oil 96
- Features/Benefits 100
- Technical Data 101
- 0 ... 2 % 102
- Interchangeable Probes 104
- Demanding OEM Applications 106
- GMM111 Carbon Dioxide Module 108
- Vaisala CARBOCAP 110
- Technology 110
- Two Sampling Methods 110
- Features/Benefi ts 112
- Demand-controlled Ventilation 114
- GMM112 Carbon Dioxide Module 118
- GMM20W Carbon Dioxide Module 120
- Pressure 122
- PTU300 Models 123
- Mechanics 126
- Accessories 126
- Dimensions 126
- IN CONTROLLED ENVIRONMENTS 127
- Take the Lab to the Field 130
- For more information, visit 131
- Standard PTB330TS 132
- PTB210 Digital Barometer 134
- Calculate 137
- Vaisala BAROCAP® 138
- Accuracy and Stability 138
- Applications 138
- Ideal for outdoor 140
- Carefree maintenance 140
- Operating Environment 142
- Available Options 142
- Figure 1 143
- Figure 2 with Process 143
- Valve Actuator and 143
- Test Jacks 143
- Measuring Acoustic 146
- Precipitation 146
- Wind Measurement 150
- Vaisala Service Offering 152
- Accredited Body 153
- Accredited Parameters 153
- Vaisala Filters 154
- Vaisala Filters continued 155
- Vaisala Contact Information 158
- ASIA AND PACIFIC 159
- NORTH AMERICA 159
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