Siemens technical specifications DS III, DS III PA and DS III FF series Technical description

© Siemens AG 2008

SITRANS P measuring instruments for pressure

Transmitters for gage, absolute and differential pressure, flow and level

DS III, DS III PA and DS III FF series

Technical description

■Overview

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SITRANS P pressure transmitters, DS III series, are digital pres- sure transmitters featuring extensive user-friendliness and high accuracy. The parameterization is performed using control keys, over HART communication, PROFIBUS-PA or FOUNDATION Fieldbus interface.

Extensive functionality enables the pressure transmitter to be precisely adapted to the plant’s requirements. Operation is very simple in spite of the numerous setting options.

Transmitters with type of protection "Intrinsic safety" and "Explo- sion-proof" may be installed within potentially explosive atmo- spheres (zone 1) or in zone 0. The transmitters are provided with an EC type examination certificate and comply with the corre- sponding harmonized European standards (ATEX).

The transmitters can be equipped with various designs of re- mote seals for special applications such as the measurement of highly viscous substances.

Various versions of the DS III pressure transmitters are available for measuring:

•Gage pressure

•Absolute pressure

•For differential pressure transmitters

•Filling level

•Mass level

•Volume level

•Volume flow

•Mass flow

■Benefits

•High quality and long life

•High reliability even under extreme chemical and mechanical loads

•For aggressive and non-aggressive gases, vapors and liquids

•Extensive diagnosis and simulation functions

•Separate replacement of measuring cell and electronics with- out recalibration

•Minimum conformity error

•Small long-term drift

•Wetted parts made of high-grade materials (e.g. stainless steel, Hastelloy, gold, Monel, tantalum)

•Infinitely adjustable span from 0.01 mbar to 400 mbar for DS III with HART communication

•Nominal measuring range from 1 to 400 bar for DS III PA (PROFIBUS PA) and FF (FOUNDATION Fieldbus)

•High measuring accuracy

•Parameterization over control keys and HART communication, PROFIBUS PA communication or FOUNDATION Fieldbus in- terface.

■Application

The pressure transmitters of the DS III series, can be used in in- dustrial areas with extreme chemical and mechanical loads. Electromagnetic compatibility in the range 10 kHz to 1 GHz makes the DS III pressure transmitters suitable for locations with high electromagnetic emissions.

Pressure transmitters with type of protection "Intrinsic safety" and "Explosion-proof" may be installed within potentially explosive at- mospheres (zone 1) or in zone 0. The pressure transmitters are provided with an EC type examination certificate and comply with the corresponding harmonized European standards (ATEX).

Pressure transmitters with the type of protection "Intrinsic safety" for use in zone 0 may be operated with power supply units of cat- egory "ia" and "ib".

The transmitters can be equipped with various designs of re- mote seals for special applications such as the measurement of highly viscous substances.

The pressure transmitter can be operated locally over 3 control keys or programmed externally over HART communication or over PROFIBUS PA or FOUNDATION Fieldbus interface.

Siemens FI 01 · 2009

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