Vaisala PTB330 Specs.pdf

BAROCAP Digital Barometer

PTB330

For professional meteorology, aviation, and industrial users

Features

• Vaisala BAROCAP sensor

• Accurate measurement

• Excellent long-term stability

• Added reliability through redundancy

• Graphical trend display with 1-year history data

• Height and altitude corrected pressure (QFE, QNH)

• For aviation, professional meteorology, laboratories, and demanding industrial applications

• Corrosion-resistant IP65/IP66 housing, suitable for outdoor and marine environment

Vaisala BAROCAPâ Digital Barometer PTB330 is designed for a wide range of high-end atmospheric pressure measurements. The pressure measurement of PTB330 is based on the Vaisala silicon capacitive, absolute pressure sensor - the Vaisala BAROCAP sensor. It provides high measurement accuracy and excellent long-term stability.

Highly accurate The PTB330 series is highly accurate.

Class A barometers for the most demanding applications are fine-tuned and calibrated against a high-precision pressure calibrator. Class B barometers are adjusted and calibrated using an electronic working standard. All PTB330 barometers come with a traceable factory calibration certificate.

Reliability through redundancy According to your choice, PTB330 can incorporate 1, 2, or 3 BAROCAP sensors.

When 2 or 3 sensors are used, the barometer continuously compares the readings of the pressure sensors against one another and reports if they are within the set internal difference criteria.

This unique feature provides redundancy in pressure measurement.

Users also get a stable and reliable pressure reading at all times, as well as a pre-indication of when to service or recalibrate the barometer.

QNH and QFE PTB330 can be set to compensate for the QNH and QFE pressure used especially in aviation. The QNH represents the pressure reduced to sea level, based on the altitude and temperature of the observation site.

The QFE represents the height-corrected pressure of small differences in altitude, for example, the air pressure at the airfield elevation.

Graphical display PTB330 features a multilingual, graphical display allowing users to monitor measurement trends. PTB330 updates the graph automatically during measurement and it provides a 1-year measurement history. In addition to instant pressure, PTB330 provides the WMO pressure trend and tendency codes.

Applications PTB330 can be used successfully for aviation, professional meteorology, and for demanding industrial pressure measurement applications such as accurate laser interferometric measurement and exhaust gas analysis in engine test benches.

Technical data

Measurement performance

Property Class A Class B

Barometric pressure range 500 … 1100 hPA

Linearity 1) ±0.05 hPa ±0.10 hPa

Hysteresis 1) ±0.03 hPa ±0.03 hPa

Repeatability 1) ±0.03 hPa ±0.03 hPa

Calibration uncertainty 2) ±0.07 hPa ±0.15 hPa

Accuracy at +20 °C (+68 °F) 3)

±0.10 hPa ±0.20 hPa

Barometric pressure range 50 … 1100 hPA

Linearity 1) – ±0.20 hPa

Hysteresis 1) – ±0.08 hPa

Repeatability 1) – ±0.08 hPa

Calibration uncertainty 2) – ±0.15 hPa

Accuracy at +20 °C (+68 °F) 3)

– ±0.20 hPa

Temperature dependence 4)

500 … 1100 hPa ±0.1 hPa ±0.1 hPa

50 … 1100 hPa ±0.3 hPa ±0.3 hPa

Total accuracy −40 … +60 °C (−40 … +140 °F)

500 … 1100 hPa ±0.15 hPa ±0.25 hPa

50 … 1100 hPa – ±0.45 hPa

Long-term stability

500 … 1100 hPa ±0.1 hPa/year ±0.1 hPa/year

50 … 1100 hPa ±0.2 hPa/year ±0.2 hPa/year

Miscellaneous

Pressure units hPa, mbar, kPa, Pa inHg, mmH20, mmHg, torr, psia hPa, mbar, kPa, Pa inHg, mmH20, mmHg, torr, psia

Resolution 0.01 hPa 0.1 hPa

Settling time at startup (1 sensor)

4 s 3 s

Response time (1 sensor) 2 s 1 s

Acceleration sensitivity – Negligible

Maximum pressure limit – 5000 hPa absolute

Maximum measurement rate 5)

– 10 Hz

1) Defined as ±2 standard deviation limits of endpoint non-linearity, hysteresis, or repeatability error.

2) Defined as ±2 standard deviation limits of inaccuracy of the working standard including traceability to international standards.

3) Defined as the root sum of the squares (RSS) of endpoint non-linearity, hysteresis error, repeatability error, and calibration uncertainty at room temperature.

4) Defined as ±2 standard deviation limits of temperature dependence over the operating temperature range.

5) For class A you need a longer averaging time or measurement interval.

Operating environment Pressure range 500 … 1100 hPa, 50 … 1100 hPa

Operating temperature −40 … +60 °C (−40 … +140 °F)

Operating temperature with local display

0 … +60 °C (+32 … +140 °F)

IP rating IP66 IP65 (NEMA4) with local display 1)

1) IP rating of PTB330AWS is IP40.

Mechanical specifications Pressure fitting Barbed fitting for 1/8-inch (inside diameter) tubing or quick connector with shutoff valve for 1/8‑inch hose

Pressure connector M5 (10‑32) internal thread

Housing material G AlSi10 Mg (DIN 1725)

Weight 1 … 1.5 kg (2.2 … 3.3 lb)

Inputs and outputs Supply voltage 10 … 35 V DC

Supply voltage sensitivity Negligible

Typical power consumption at +20 °C (+68 °F) (voltage at 24 V DC with 1 pressure sensor)

RS‑232: 25 mA RS‑485: 40 mA Output voltage Uout: 25 mA Output current Iout: 40 mA Display and backlight: +20 mA

Serial communication RS-232, RS‑485, RS‑422

Analog output (optional) Current output 0 … 20 mA, 4 … 20 mA

Voltage output 0 … 1 V, 0 … 5 V, 0 … 10 V

Accuracy at pressure range

500 … 1100 hPa 50 … 1100 hPa

At +20 °C (+68 °F) ±0.30 hPa ±0.40 hPa

At −40 … +60 °C (−40 … 140 °F)

±0.60 hPa ±0.75 hPa

Data transfer software MI70 Link Interface software requirements

Microsoftâ Windows OS Microsoftâ Excel

Accessories Modules

Relay module RELAY-1L

Temperature-compensated analog output module

AOUT-1T

Isolated RS-485 module RS485-1

Power supply module POWER-1

AC adapters for devices already equipped with an external AC adapter connector

AC adapter, EU MI70EUROADAPTER

AC adapter, USA MI70USADAPTER

AC adapter, UK MI70UKADAPTER

AC adapter, AUS MI70AUSDAPTER

Static pressure head

Static pressure head SPH10

Static pressure head with heating SPH20

Barometer mounting accessories

Junction box ASM211113

Wall mounting kit 214829

Installation kit for pole or pipeline 215108

Outdoor installation kit (weather shield)

215109

DIN rail clips with installation plate 215094

Panel mounting frame 216038

Connection cables

Connection cable for PTB330 and MI70 handheld meters for spot check or calibration and adjustment

211339

Service cables

USB-RJ45 serial connection cable 219685

D9-RJ45 serial connection cable 215005

Output cables for 8-pin connector

Connection cable 5 m with 8-pin M12 female, black

212142

Female connector 8-pin M12 with screw terminals

212416

Cable bushings

PTB330/220/PTU200 DC adapter and RS-232 cable for PC

213019

PTB330/PTB220/PTU200 DC adapter cable

213026

Others

Dust filter 237018SP

Barbed pressure fitting 1/8-inch 19498SP

Quick connector 1/8‑inch 220186

Compliance

Property Value

EU directives and regulations RoHS Directive (2011/65/EU) amended by 2015/863 EMC Directive (2014/30/EU) Low Voltage Directive (2014/35/EU), applies to units equipped with single-phase AC power supply Power-1

Electrical safety EN 61010-1:2010 + A1:2019, applies to units equipped with single-phase AC power supply Power-1

Electromagnetic compatibility (EMC) EN 61326‑1, industrial environment

EN 55011:2009 + A1:2010

Environmental EN IEC 63000:2018

183 [7.20]

119 [4.69]

143 [5.63]

77 [3.03] mm [in]

PTB330 dimensions

145 [5.71]

[4.72] mm [in]

141 [5.55]

75 [2.95]

PTB330AWS dimensions

Published by Vaisala | B210708EN-J © Vaisala Oyj 2023

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Any reproduction, transfer, distribution or storage of information contained in this document is strictly prohibited. All specifications — technical included — are subject to change without notice.

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