Safety Pressure Sensors

  • Core technology in-house thin-film technology
  • High levels of robustness (ISO 16750-3 and DIN-EN 60068-2-80)
  • IPx9k tight housing
  • Successfully used in very demanding applications
  • Modular kit
  • Customer-specific variations

STW offers various solutions for the measurement and processing of pressure values in applications with increased functional safety acc. EN ISO 13849-1 or IEC 61508. The pressure transmitter F02 supplies a redundant analog output signal for further processing to a control system; the F01 safety switch, on the other hand, assesses the pressure value without an additional control system and reliably triggers the integrated switch. Whereas on the F02 the switching threshold is defined in the control system, this is fixed pre-programmed on the F01. Another possibility for reliable measurement of the pressure is the redundant use of the M01.

 

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With the F02, STW offers a pressure transmitter for applications with increased functional safety acc. EN ISO 13849-1 (PL d Cat. 2) or IEC 61508 (SIL2). The F02 monitors the signals of its measuring cell and provides the measured pressure value as a 4 … 20 mA signal at two outputs inverted to each other. In this way, it is not only possible for a downstream control system to check the functionality of the F02, but also to monitor the signal path. In this way, it is possible to use the device in safety-oriented applications in a good price/performance ratio.  

For reliable switching of the integrated switching outputs, the F01 pressure trasnmitter does not require an additional control system. The F01 is independently in a position to record the pressure and to switch reliably at the switching threshold values permanently set at the factory. The F01 has been developed for applications with increased functional safety requirements acc. EN ISO 13849-1 (PL d Cat. 2). In addition to variations with two switching outputs, pressure switches are also available with a switching output combined with a current output.

All sensors have been developed for extremely high requirements as in hydraulics applications or in the brake systems of mobile machines.

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F01 Safety

  • Measuring range 50…1.000 bar
  • Temperature range -40…125°C
  • Welded stainless steel measuring cell
  • Automotive qualified
  • Available as inidividual units
Datasheet
F01 Safety

F01 Safety

  • Pressure switch for PL d requirements (Functional Safety Applications)
  • Two switch outputs or one switch output and one current output
  • E1 type approval
  • For extreme operating conditions

F02 Safety

  • Measuring range 10…1.200 bar
  • Temperature range -40…125°C
  • Welded stainless steel measuring cell
  • Automotive qualified
  • Designed for OEM needs
Datasheet
F02 Safety

F02 Safety

  • Pressure sensor for PL d/SIL2 requirements (Functional Safety Applications)
  • Dual output signal, inversely
  • E1 type approval
  • For extreme operating conditions

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