Stahl isolator meets SIL2 safety requirements

Edited by the Processingtalk editorial team May 22, 2009

Stahl's range of Ispac 9162-type transmitter supply units has been expanded by a model that can be used in safety orientated process automation applications according to IEC EN 61508/61511.

The new model increases the application range of the Ispac isolator series in implementing safety oriented plants in hazardous areas.

The isolators meet the requirements according to SIL 2, allowing planners and users of process plants to run limit-value analyses of intrinsically safe 4-20mA signals and to fulfil all conditions concerning functional safety.

The trip amplifiers feature a space-saving design.

The new Ispac module provides intrinsic safety, limit-value analysis and SIL suitability while taking up 17.6mm on the DIN rail.

The units can be installed and operated in Zone 2, providing users in machine-building applications with more flexibility in the planning of plants and machines.

The unit detects cable breaks and short circuits, and directly reports these to the plant operator via LED, error contact and the analogue output signal.

This allows users to detect and eliminate malfunctions more quickly, thereby increasing the efficiency of production plants.

The unit's compact design and easy operation facilitate installation and start-up.

It can be mounted on DIN rails or installed as a pac carrier component for efficient integration into safety PLCs.

In addition to the Ex i trip amplifier, Stahl also offers a non-Ex i model, thus providing a range of solutions for mixed-Ex i and non-Ex i applications.