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PTU300 Combined Pressure, Humidity and Temperature Transmitter

For demanding applications

9 ₫

Model: PTU300

Manufacturer: Vaisala – Finland

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
Modbus RTU protocol support
Traceable to international standards

Category: Uncategorized

Vaisala Combined Pressure, Humidity and Temperature Transmitter PTU300 is a unique instrument measuring three parameters simultaneously.

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 BAROCAPâ 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, providing Modbus RTU (RS-485) communication.

The data logger records data that can be viewed on the local display or transferred to a PC with Microsoft Windows software. 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.

Applications

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

Measurement performance

Barometric pressure
Pressure range		500 … 1100 hPa	50 … 1100 hPa
Accuracy	500 … 1100 hPa	500 … 1100 hPa	50 … 1100 hPa
	Class A	Class B
Linearity	±0.05 hPa	±0.10 hPa	±0.20 hPa
Hysteresis	±0.03 hPa	±0.03 hPa	±0.08 hPa
Repeatability	±0.03 hPa	±0.03 hPa	±0.08 hPa
Calibration unceratinty	±0.07 hPa	±0.15 hPa	±0.20 hPa
Accuracy at +20 °C / +68 °F	±0.10 hPa	±0.20 hPa	±0.30 hPa
Temperature dependence	±0.1 hPa	±0.1 hPa	±0.3 hPa
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	±o.2 hPa
Response time (100 % response):
One sensor	2 s	1s	1s
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 At -20 … +40 °C / – 4… +104 °F At -40 … +60 °C / -40 … +140 °F	±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
Factory calibration uncertainty (+20 °C / +68 °F) (Defined as ±2 standard deviation limits. Small variations possible, see also calibration certificate.)	±0.6 %RH (0 … 40 %RH) ±1.0 %RH (40 … 97 %RH)
Sensor for typical applications	Vaisala HUMICAP 180 or 180R
Sensor for applications with chemical purge/warmed probe	Vaisala HUMICAP 180C or 180RC
Response Time (90 %) at +20 °C (+68 °F) in Still Air:
With grid filter With grid + steel netting filter With sintered filter	8 s / 17 s 1) 20 s / 50 s 1) 40 s / 60 s 1)
Temperature
Measurement range, housing (barometric pressure measurement limit) 2	-40 … +60 °C (-40 … +140 °F)
Measurement range, probes (operational limit when measuring RH or T)	PTU301: -40 … +60 °C (-40 … +140 °F) PTU303: -40 … +80 °C (-40 … +176 °F) PTU307: -40 … +180 °C (-40 … +356 °F) PTU30T: -70 … +180 °C (-94 … +356 °F) 3)
Accuracy at +20 °C (+68 °F)	PTU301, PTU303, PTU307: ±0.2 °C (±0.4 °F) PTU30/T: ±0.1 °C (±0.18 °F)
Temperature units	°C, °F
Temperature sensor	Pt100 RTD Class F0.1 IEC 60751

1) With HUMICAP 180R or 180RC sensor

2) Note that the operational temperature limits of the PTU303, PTU307, and PTU30T probes are higher than for the PTU300 transmitter itself. The transmitter’s temperature limit is based on the upper temperature limit for barometric pressure measurement, +60 °C (+140 °F)

3) PTU30T is used for T and P measurements only, RH measurement not in use.

Display

Material	LCD with backlight, graphical trend display of any parameter
Menu languages	English, Chinese, Finnish, French, German, Japanese, Russian, Spanish, Swedish

Inputs and outputs

Operating voltage With optional power supply module	10 … 35 V DC, 24 V AC ±20 % 100 … 240 V AC, 50/60 Hz
Settling time at power-up (one sensor)	Class A: 4 s Class B: 3 s
Wire size	0.5 … 2.5 mm2 (AWG 20 … 14) Stranded wires recommended
Digital outputs	RS-232, RS-485 (optional)
Protocols	ASCII commands, Modbus RTU
Service connection	RS-232, USB
Relay outputs (optional)	0.5 A, 250 VAC
Power consumption at +20 °C (+68 °F) (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
Display and backlight	+20 mA
During chemical purge	Max. +110 mA
During probe heating	+120 mA
External Loads
Current outputs	RL < 500 Ω
0 … 1 V output	RL > 2 kΩ
0 … 5 V and 0 … 10 V outputs	RL > 10 kΩ
Analog outputs (optional)
Current output	0 … 20 mA, 4 … 20 mA
Voltage output	0 … 1 V, 0 … 5 V, 0 … 10 V
Humidity and temperature:
Accuracy of analog outputs at +20 °C (+68 °F)	±0.05 °% full scale
Temperature dependence of analog outputs	±0.005 %/°C (0.003 %/°F) full scale
Pressure:
Accuracy of analog outputs at +20 °C (+68 °F)	±0.30 hPa (500 … 1100 hPa) ±0.40 hPa (50 … 1100 hPa)
Accuracy of analog outputs at -40 … +60 °C / -40 … +140 °F	±0.60 hPa (500 … 1100 hPa) ±0.75 hPa (50 … 1100 hPa)

Operating environment

Operating temperature	-40 … +60 °C (-40 … +140 °F)
Operating temperature with optional display	0 … +60 °C (+32 … +140 °F)
Humidity range	Non-condensing
Measurement environment	For air, nitrogen, hydrogen, argon, helium, and oxygen 1)

1) Consult Vaisala if other chemicals are present. Consider safety regulations with flammable gases

Compliance

Compliance marks	CE, RCM
EMC compliance	EN61326-1, Industrial Environment
Note: For transmitter with display, a test impedance of 40 Ω is used in IEC61000-4-5 (Surge immunity).

Mechanical specifications

Cable bushing	M20 x 1.5 for cable diameter 8 … 11 mm / 0.31 … 0.43″
Conduit fitting	1/2″ NPT
User cable connector (optional) Option 1 Option 2	M12 series 8-pin (male) Female plug with 5 m (16.4 ft) black cable Female plug with screw terminals
Cable diameter, PTU303	6.0 mm
Cable diameter, other probes	5.5 mm
Standard probe cable lengths	2 m, 5m or 10 m 1)
Housing materia	G-AlSi 10 Mg (DIN 1725)
IP rating	IP66 IP65 with local display
Weight (depending on selected probe)	1.0 – 3.0 kg / 2.2 – 6.6 lb

1) Additional cable lengths available, please see order form for details.

Optional data logger with real-time clock

Logged parameters	Max. four with trend/min/max values
Logging interval	10 s (fixed)
Maximum logging period with maximum temporal resolution	4 years 5 months
Logged points	13.7 million points per parameter
Battery lifetime	Min. 5 years

Spare parts and accessories

PC software and cable	215005
USB-RJ45 Serial Connection Cable	219685
Connection cable for HM70	211339
Wall mounting plate (plastic)	214829
Pole installation kit with rain shield	215109
DIN rail installation set	211477
Duct installation kit, PTU303/307	210697
Cable gland and AGRO, PTU303/307	HMP247CG
Solar radiation shield, PTU303/307/30T	DTR02B
Meteorological installation kit	HMT330MIK
Duct installation kit (T probe)	215003

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