Pressure Transmitter with SIL2 Approval

July 30, 2010. Baumer’s pressure transmitter PFSX with SIL2 certification (Safety Integrity Level 2) has been developed according to the IEC 61508 standard. It is suitable for water treatment and energy generation applications as well as for applications in the chemical, petrochemical, pharmaceutical, and food & beverage industries. The measuring instrument comes with a 4…20 mA analogue output and two galvanically insulated relay outputs with integrated test functions for alarm purposes.

The PFSX can measure pressure ranges from 0…1 up to 0…400 bar with an accuracy of ±0.5 % of the full scale. The pressure transmitter has a four-digit red LED display (8 mm high) with two set points. It is fully programmable on site without any additional tools. All parameters are password-protected.

The SIL2 approval is based on the Safe Failure Fraction (SFF) of 98 % and the Hardware Fault Tolerance (HFT) which is 0. The sensor architecture guarantees SIL2 safety without the need to use two pressure switches to ensure redundancy. For applications in hazardous areas, the transmitter is also available in ATEX Ex ia IIC T5/T6, ATEX II 1G versions.

The IEC 61508 standard defines basic safety requirements, both for the regular system operation and for the predictability of a failure. These requirements cover general safety management systems, specific product design and safety-compliant process design with the aim of avoiding both systematic design faults and random hardware failure.

Baumer Group
The Baumer Group is a leading international manufacturer of sensors and system solutions for factory and process automation. In 2010 the innovative family-owned company employs about 2000 people worldwide in 35 locations and 18 countries. The long-lasting success is built on high customer focus as well as the innovative and diversified product range of the five product segments Sensor Solutions, Motion Control, Vision Technologies, Process Instrumentation und Gluing Systems. For more information please click www.baumer.com