Vaisala PTB330TS Manual do Utilizador descarregar pdf (Página 2)

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For more information, visit

www.vaisala.com or contact

us at sales@vaisala.com

Ref. B210845EN-B ©Vaisala 2012

This material is subject to copyright protection, with all copyrights

Any logos and/or product names are trademarks of Vaisala or

its individual partners. The reproduction, transfer, distribution or

storage of information contained in this brochure in any form

without the prior written consent of Vaisala is strictly prohibited.

All specifications — technical included — are subject to change

without notice.

Vaisala offers a range of professional-

grade barometers for both indoor and

outdoor use. BAROCAP barometers

operate over a wide temperature

range and perform reliably even in

highly demanding applications such

as professional meteorology and

aviation. View the complete range

of Vaisala barometers at

www.vaisala.com/pressure.

BAROCAP Applications

for Measurements in

Pressurized Systems

Vaisala DRYCAP

dew point

instruments have a long history

of providing reliable and stable

measurements in compressed

air systems and SF6 insulation

gas monitoring in high-voltage

equipment. In addition to the

need for dew point measurement,

these two applications also share

the need for accurate and stable

pressure measurement. Vaisala has

integrated its DRYCAP and BAROCAP

technologies into a range of products

that offer a unique combination of

pressure and dew point measurement

for pressurized systems.

In compressed air, combining

dew point measurement with live

process pressure data provides a

unique advantage: The conversion

of measured pressure dew point to

atmospheric pressure or ppm unit

is available online, eliminating the

possibility of any ambiguity in the dew

The story of BAROCAP began in

the late 1970s during preliminary

micromechanical pressure sensor

studies for the new-generation

Vaisala Radiosonde RS80.

Micromechanics proved to be

challenging, and Vaisala worked in

close cooperation with universities

and research institutes in Finland

and internationally to develop a

new pressure-sensing technology

based on silicon processing. The

critical breakthrough came on

the brink of the project deadline.

The first BAROCAP sensors were

delivered to two icebreakers and

the Helsinki Telephone Company.

BAROCAP sensors have traveled

to places where no human has ever

set foot, including as part of several

Mars exploration missions and the

Cassini-Huygens mission to explore

Saturn and its largest moon, Titan.

BAROCAP’s out-of-this-world

journey continues with its inclusion

in instruments that form part of

NASA’s Mars Science Laboratory,

launched in November 2011.

The BAROCAP Story

BAROCAP sensor.

Cross-section of the BAROCAP sensor.

point data. This is important because

changes in the pressure of the gas

being monitored alter its dew point.

Combined dew point and pressure

measurement in SF6 gas monitoring

of high-voltage equipment provides

a superior tool for assessing the

condition of SF6 insulation. Leakages

can be immediately detected and

early warning is given for moisture

issues. Measuring dew point,

pressure, and temperature enables

the calculation of SF6 gas density,

normalized pressure, dew point at

atmospheric pressure, and ppm – all

essential elements in SF6 monitoring.

View the complete range of Vaisala

products for combined pressure

and dew point measurement at

www.vaisala.com/pressure.

Pressure

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