PTU300 Brochure in English
Vaisala Combined Pressure, Humidity and
Temperature Transmitter
PTU300
More than pressure measurement
P.O. Box 26, FI-00421 Helsinki, FINLAND
Tel: +358 9 89491
Fax: +358 9 8949 2485
E-mail: industrialsales@vaisala.com
www.vaisala.com
PTU300 Combined Pressure, Humidity and
Temperature Transmitter for Industrial Use
Features/Benefits
The Vaisala Combined Pressure, Humidity and Temperature Transmitter PTU300 is
a versatile, multi-purpose instrument.
One transmitter, three
measurements
The Vaisala Combined Pressure,
Humidity and Temperature
Transmitter PTU300 measures
barometric pressure in two
accuracy classes, humidity, and
temperature.
Graphical trend display
The PTU300 series features a
large numerical and graphical
display, allowing users to
easily monitor three-hour
measurement trends. It also
provides a one-year trend
history.
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.
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.
Vaisala proven sensor
technology
The PTU300 transmitter uses
sensors known for their high
accuracy and excellent longterm stability: the Vaisala
BAROCAP® is used for pressure
measurement and the Vaisala
HUMICAP® for humidity
measurement. The temperature
sensor is a platinum RTD sensor.
• Barometric pressure, humidity and
temperature measurement in one
transmitter
• Available with two barometric
pressure sensors - for added
realibility
• 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
Outdoor installation kit
The display also shows the WMO pressure
trend ∆P 3h and tendency of 0 ... 9.
Data collection and
transfer to PC
The recorded measurement data
can be viewed on the display or
transferred to PC with Microsoft
Windows® software.
The optional HMT330MIK
Installation Kit is available for
outdoor installation. It provides
reliable measurements for
meteorological purposes.
PTU300
BAROMETRIC PRESSURE
PTU303
PTU301
For outdoor use and tight spaces.
����������
M9x1
Ø 12 (0.47)
For wall-mounting
37.5 (1.48)
78.5 (3.09)
���������
98.5 (3.88)
PTU307
PTU30T
For measuring temperature only.
M9×1
ø 12 (0.47)
A warmed probe for demanding
metorological measurements.
37.5 (1.48)
79.5 (3.13)
99.5 (3.92)
Technical Data, Dimensions
Performance
Inputs and outputs
Barometric pressure
Pressure range
Accuracy
500 ... 1100 hPa
Class A
±0.05 hPa
±0.03 hPa
±0.03 hPa
±0.07 hPa
±0.10 hPa
±0.1 hPa
500 ... 1100 hPa, 50 ... 1100 hPa
500 ... 1100 hPa
50 ... 1100 hPa
Class B
±0.10 hPa
±0.20 hPa
±0.03 hPa
±0.08 hPa
±0.03 hPa
±0.08 hPa
±0.15 hPa
±0.20 hPa
±0.20 hPa
±0.30 hPa
±0.1 hPa
±0.3 hPa
Linearity
Hysteresis*
Repeatability*
Calibration uncertainty**
Accuracy at +20 °C***
Temperature dependence****
Total accuracy
(-40 ... +60 °C/-40 ... +140 °F)
±0.15 hPa
±0.25 hPa
±0.45 hPa
Long-term stability/year
±0.1 hPa
±0.1 hPa
±0.2 hPa
Response time (100 % response)
2 s•
1 s•
1 s•
one sensor
Pressure units
hPa, mbar, kPa, Pa, inHg, mmH20, mmHg, torr, psia
* Defined as ±2 standard deviation limits of endpoint non-linearity, hysteresis
error or repeatability error and calibration.
** Defined as ±2 standard deviation limits of accuracy of the working standard
including traceability to NIST.
*** Defined as the root sum of the squares (RSS) of endpoint non-linearity,
hysteresis error, repeatability error and calibration uncertainty at
room temperature.
**** Defined as ±2 standard deviation limits of temperature dependence over
Temperature
Measurement range, all probes
Accuracy at +20 °C (+68 °F)
Temperature units
Accuracy over temperature range
-40 ... +60 °C (-40 ... +140 °F)
± 0.2 °C (± 0.4 °F)
°C, °F
∆ °C
0.5
0.4
10 ... 35 VDC, 24 VAC
Operating voltage
with optional power supply module
100 ... 240 VAC, 50/60 Hz
Power consumption at +20 °C (Uin 24 VDC)
RS-232
max. 28 mA
Uout 3 x 0 ... 1 V/0 ... 5 V/0 ... 10 V
max. 33 mA
Iout 3 x 0 ... 20 mA
max. 63 mA
+20 mA
display and backlight
during chemical purge
max. +110 mA
+120 mA
during probe heating (HMT337)
Settling time at power-up (one sensor)
4s
class A
3s
class B
External loads
RL < 500 ohm
current outputs
RL > 2 kohm
0 ... 1 V output
RL > 10 kohm
0 ... 5 V and 0 ... 10 V outputs
2
Recommended wire size
0.5 mm (AWG 20) stranded wires
Digital outputs
RS-232 (RS-485 optional)
Relay outputs (optional)
0.5 A, 250 VAC
Display
LCD with backlight, graphic trend display of
any parameter
Menu languages
English, Finnish, French, German, Japanese,
Spanish, Swedish
Analog outputs (optional)
0 ... 20 mA, 4 ... 20 mA
current output
voltage output
0 ... 1 V, 0 ... 5 V, 0 ... 10 V
Humidity and temperature
accuracy at +20 °C
±0.05% full scale
temperature dependence
±0.005%/°C full scale
Pressure
500...1100 hPa
50...1100 hPa
accuracy at +20 °C
±0.30 hPa
±0.40 hPa
accuracy at -40 ... +60 °C
±0.60 hPa
±0.75 hPa
0.3
Mechanics
0.2
Cable bushing
0.1
°C
0
-0.1
-0.2
-0.3
-0.4
-0.5
-40
-20
0
20
40
Temperature sensor
Relative humidity
Measurement range
Accuracy (including non-linearity, hysteresis, and
repeatability
at +15 ... +25 °C
at -20 ... +40 °C
at -40 ... +60 °C
Factory calibration uncertainty (+20 °C )
(Defined as ±2 standard deviation
limits. Small variations possible,
see also calibration certificate.)
Sensor
for typical applications
for applications with
chemical purge/warmed probe
Response time (90 %) at +20 °C in still air
with grid filter
with grid + steel netting filter
with sintered filter
60
PT100 RTD 1/3 Class B IEC 751
0 ... 100 % RH
±1 %RH (0 ... 90 % RH)
±1.7 %RH (90 ... 100 %RH)
±(1.0 + 0.008 x reading) %RH
±(1.5 + 0.015 x reading) %RH
± 0.6 % RH (0 ... 40 %RH)
± 1.0 % RH (40 ... 97 %RH)
Vaisala HUMICAP® 180
Vaisala HUMICAP® 180C
8s
20 s
40 s
M20 x 1.5 for cable diameter
8 ... 11 mm/0.31 ... 0.43”
1/2” NPT
M12 series 8-pin (male)
female plug with 5 m (16.4 ft) black cable
female plug with screw terminals
Conduit fitting
User cable connector (optional)
option 1
option 2
Probe cable diameter
PTU303
other probes
Housing material
Housing classification
Weight of PTU303 with 2-m cable
6.0 mm
5.5 mm
G-AlSi 10 Mg (DIN 1725)
IP 65 (NEMA 4)
1.1 kg
Accessories
PC software and cable
Connection cable for HM70
Wall mounting plate (plastic)
Pole installation kit
Rain shield
DIN rail installation set
Duct installation kit, PTU303/307
Cable gland and AGRO, PTU303/307
Solar radiation shield, PTU303/307/30T
Meteorological installation kit
Duct installation kit (T probe)
215005
211339
214829
215108
215109
211477
210697
HMP247CG
DTR502B
HMT330MIK
215003
Dimensions
in mm (inches)
183 (7.20)
169 (6.65)
77 (3.03)
71 (2.80)
BAROCAP® and HUMICAP® are registered trademarks of Vaisala.
Specifications are subject to change without prior notice.
© Vaisala Oyj
Ref. B210653EN 2007-01
Vaisala Oyj, PO Box 26
FI-00421 Helsinki, Finland
Tel: +358 9 894 91
Fax: +358 9 8949 2485
www.vaisala.com
96 (3.78)
-40 ... +60 °C (-40 ... +140 °F)
0 ... +60 °C (+32 ... +140 °F)
non-condensing
EN61326-1:1997 + Am1:1998
+Am2:2001; Industrial Environment
Ø 7 (0.28)
Operating temperature
with display
Humidity range
Electromagnetic compatibility
116 (4.57)
Operating Environment
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