
More and more safety-critical functions are being incorporated today in mechanical engineering, automation, electrical engineering and process technology. Programmable systems are being used increasingly in this field.
Functional safety is the portion of total system safety which depends on the correct function of safety-critical systems for minimizing risk. This includes electrical, electronic and programmable electronic systems (E/E/PES).
These systems must carry out their intended functions (safety functions) within defined error conditions and with defined high probability. The aim is to achieve and maintain a safe system condition.
The technical requirements with regard to functional safety are derived from the standards IEC 61508 and EN 13849. For this, HYDAC provides controllers and software certified to IEC 61508, SIL 2 / 3 and EN 13849, PL d.
HYDAC offers sensors for pressure,;position, and distance for applications with increased functional safety, and can provide support and advice to the customer, as required,through the entire product development cycle – from design and simulation,right through to the application software, commissioning and series production.

Risk appraisal according to EN ISO 13849
Sensors for applications with increased functional safety:
Pressure Transmitters
- HDA 4700 – Functional safety PL d, Cat 3 (download data-sheet)
- HDA 8700 – Functional safety PL d, SIL 2 (download data-sheet)
Sensors for distance
- HLT 1100-R2 Analogue – Functional safety PL d, SIL 2 (download data-sheet)
- HLT 1100-R2 CAN – Functional safety PL d, SIL 2 (download data-sheet)
Sensors for position
- HLS 100 – Functional safety PL d, SIL 2 (download data-sheet)
- HLS 200 – Functional safety PL d (download data-sheet)
Angle sensors
- HAT 1200 – Functional safety PL d, SIL 2 (download data-sheet)
- HAT 1400 – Functional safety PL d, SIL 2 (download data-sheet)
- HAT 3800 – Functional safety PL d, SIL 2 (download data-sheet)
Inclinometers
- HIT 1500 – Functional safety PL d, SIL 2 (download data-sheet)
Controllers, I/O expansion modules and software (access website)