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Plant safety

Functional safety (SIL) and device list

Cost-effective solutions for the highest requirements in plant safety

If you require a reliable and efficient safety system, Endress+Hauser offers the most comprehensive range of devices, selection and designing tools for devices as well as competent advice and services from experts.


  • Experts for certified development processes

  • The most comprehensive device portfolio

  • Avoid systematic errors

  • Calculation of SIL loops

  • Cost-reducing and time-saving proof test concepts

White paper on functional safety in process technology (SIL)

Read this white paper to find out how to increase plant availability.

Download the white paper on functional safety now (German only)>>>

Reliable and efficient safety systems

Breakdowns in process-related systems can pose a serious risk to human health and the environment, or result in property damage. Safety systems that use process control technology (PCT) reduce risks and set the plant to a safe condition in the event of a malfunction. The considerable maintenance effort associated with regular inspection of the PCT safety systems costs both time and money and reduces plant availability. Often the cause of failure in safety equipment is systematic.

Experts for certified development processes

  • Certified quality management systems and development methods as per IEC 61508 prevent systematic errors

The most comprehensive device portfolio

  • SIL-qualified and certified measuring instruments in the areas of level, flow, pressure and temperature as well as a SIL 2-certified pH measuring point for analysis

  • Devices are developed in accordance with SIL 2/3 (IEC 61508)

  • Devices are used directly with market launch or after a reduced field testing period as per NE 130

Click here for a SIL device overview >>>

Avoid systematic errors

  • Free engineering tool "Applicator" supports planners in selecting the devices and designing the measuring point and offers a wide range of calculation functions

  • Reliable configuration sequences check all of the relevant setup parameters in the devices and universal operating concepts

Click here for brochure on how to avoid systematic errors in SIL safety equipment

Click here for the Applicator >>>

Calculation of SIL loops

  • SIL calculations of planned or installed safety loops to verify the required SIL classification

  • Create optimization proposals if required SIL level cannot be verified by calculation or if systematic errors occur

Cost-reducing and time-saving test concepts

  • Maximum plant availability thanks to Heartbeat Technology on device, functions integrated in the device, constant self-monitoring or the Fieldcheck testing tool

  • Testing while the device is installed without process interruption or without opening piping

More information:


Functional safety (SIL) competence brochure >>>
Functional safety (SIL) poster >>>


Click here for the SIL in practice roadshow (German only) >>>


Endress+Hauser GmbH
Lehnergasse 4 1230 Wien , Austria
Tel.: +43 (0)1 880 56 0
Fax: +43 (0)1 880 56 335
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