ABB 2600TThe 2600T Safety Pressure Transmitter available from ABB meets the need for pressure measurement devices in compliance with Safety Integrity Levels SIL 2 and SIL 3, common in process applications such as chemical, petrochemical, pharmaceutical facilities, offshore oil platforms, gas production operations and refineries. The device is certified to the IEC Standard 61508/ISA S 84.01. Customers designing to these standards comply with EPA and OSHA 1910 requirements. It also has TÜV certification for meeting international standards defining a process plant’s SIL.
 The instrument features self-diagnostics for safety applications, signal validation of both sensor and the electronics, and hardware/software redundancy. The new transmitter also meets the stringent requirement of the new IEC PED (Pressure Equipment Directive) category IV compliance for mechanical integrity. The transmitter features a base accuracy of 0.075%, a Safe Failure Fraction over 96% and is available with a wide variety of materials and process connections, including ABB’s exclusive all-welded remote seal design.

In a SIL 2 environment, a single, self-monitoring 2600T Safety Pressure Transmitter provides the same level of protection as two conventional transmitters in parallel while, in a SIL 3 environment, two 2600T Safety Pressure Transmitters could be used instead of three conventional units. Cost savings can be realized from the fact that a high level of redundancy can be achieved with fewer instruments, less cabling, I/O modules, etc. and through reduced time for installation and commissioning.

Dual redundancy with automatic data validation using a single 2600T Safety Pressure Transmitter involves two pressure signals from the device being independently detected and analyzed internally. A microcontroller compares the two signals to validate the output pressure signal and, should a difference between the two measurements be detected, the transmitter’s analog output is driven upscale or down to a safe condition, as defined by the NAMUR NE43 standard. Internal diagnostics verify the correctness and validity of all processing variables.