SIL flow monitor
SIL & PL | Functional safety
Play it safe! FlowVision sensors with ATEX and SIL certification.
The FlowVision flow monitors FS10 and FS20 as well as the FC50 velocity meter and the FC50-CA flow meter are now certified in accordance with IEC 61508 for SIL 2 (low demand mode) and SIL 1 (high demand mode). This also applies to all ATEX variants for Zone 2 and Zone 1.
For more information, please see our flyer.
We would be happy to support you with our expertise for your SIL or ATEX applications. Just get in touch with us!
What is SIL?
The Safety Integrity Level (SIL) is a key figure that describes the degree of risk reduction through safety-relevant systems. It is divided into four levels, from SIL 1 (lowest safety level) to SIL 4 (highest safety level). Each level defines specific requirements for the reliability and performance of a safety-related system.
What is PL?
The Performance Level (PL) is a key figure that describes the risk and the required reliability of safety-related control functions in machines. It is divided into five levels, from PL a (lowest performance level) to PL e (highest performance level). Each level defines requirements for the ability of a system to reliably perform a safety function under specified conditions.
Meaning of functional safety
Functional safety ensures that machines and systems do not pose a danger to people or the environment, even in the event of faults. It is based on defined safety functions that reliably intervene in the event of an emergency. Different standards apply depending on the area of application: IEC 61508 with the Safety Integrity Level (SIL) for industrial applications and ISO 13849 with the Performance Level (PL) in machine construction. Both standards help to plan safety functions based on risk and implement them in accordance with standards.
SISTEMA VDMA66413-library
We provide a SISTEMA-compatible library in accordance with VDMA standard sheet 66413 to support safety-related assessment in accordance with ISO 13849-1.
Two variants for your application
Two versions are available depending on application:
FS10 | FS20 with switching output
Ideal for monitoring minimum or maximum flows of gases or liquids. As soon as the flow exceeds or falls below a defined threshold value, a switching action is triggered – for example to trigger an alarm or shut down systems.
The flow monitors FS10 | FS20 are also suitable for use in safety-relevant applications: They meet the requirements for SIL 1 (high demand) as well as SIL 2 (low demand) and even achieve SIL 3 in accordance with IEC 61508 with a redundant design. They also support PL b for category B and PL d for category 2 and 3, provided an improved diagnostic level (DC) is realized by the designer or integrator.
→ Perfect for simple monitoring of limit values in safety-relevant processes.
FC50 | FC50-CA with 4...20 mA output
This variant continuously measures the flow velocity of gases or liquids and transmits the value to a controller or process control system via an analog output.
The FC50 velocity meter or FC50-CA flow meter is also suitable for use in safety-relevant applications: The sensors meet the requirements for SIL 1 (high demand) as well as SIL 2 (low demand) and achieve SIL 3 in accordance with IEC 61508 with a redundant design. They can also be used up to PL b for category B, PL d for categories 2 and 3, and up to PL e for category 3, provided an increased diagnostic level (DC) is ensured by the designer or integrator.
→ Ideal for applications with measurement and control tasks, e.g. for volume flow control or process optimization.