Vaisala HUMICAP MMT310 Manual de servicio Pagina 124

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PTU300 Combined Pressure, Humidity and
Temperature Transmitter for demanding applications
One transmitter, three
measurements
The Vaisala Combined Pressure,
Humidity and Temperature
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,
The Vaisala PTU300 Combined Pressure, Humidity and Temperature Transmitter is a
versatile, multi-purpose instrument.
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 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 con gurable 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.
Flexible calibration
A quick, one-point  eld 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/Benefi ts
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
Barometric Pressure
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