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The ABB HART 266 Digital Diaphragm Seal (DDS) pressure transmitters have been designed to address issues that conventional remote seal system already address, plus many of the problems that traditionally require high costs or performance compromises.
This is especially valid when devices are to be installed on tall vessels or distillation towers. DDS are based on the reliable ABB sensing technologies and deliver a differential pressure (DP) measure through a digital approach to its calculation.
DDS is indeed a system, designed as the combination of two direct mount gauge sensors connected with a nonproprietary electrical wire.
The sensor to be installed on the high side of the DP measure, is defined as “Primary device” and embeds all the functions necessary to calculate the DP. It’s the “brain” of the system which transmits signals back to the DCS/control room leveraging a standard two-wires 4–20 mA HART signal.
The other sensor, defined as “Secondary” has the function to collect independently the pressure on the low side and transmits it to the Primary for elaboration. Such digital architecture has multiple advantages if compared against a traditional oil-based capillary system.
Pressure transmitter models are suitable for measurements up to 1050 bar (15,000 psi), using Inconel 718 NACE compliant material for wetted parts.
266 is one of the few low range differential pressure transmitters offering outstanding suitability draft range for measurements.
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Model PAS100 is the compact, reliable, essential absolute pressure transmitter suitable for liquid, gas or steam applications. It is a straightforward and robust device designed for rapid delivery and easy installation and use. Thanks to its rugged design offering high resistance in even the most demanding environments, it is a competitive solution for most applications, including ones in hazardous areas.
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The PGS300 Gauge Pressure Transmitter is ABB’s first instrumentation product with an Environmental Product Declaration (EPD) Based on the product’s Life Cycle Assessment (LCA), the EPD is a declaration of the product’s environmental impact from resource extraction to...