Which model of the side-mounted limit switch comes with a SIL2 certificate?
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After installing a positioner on the valve, which model of the limit switch installed on the side comes with a SIL certificate?
Could any expert please answer this?
When is it necessary to use a valve limit switch with SIL2 certification? Please talk about the process and interlock requirements.
It’s the control ball valve on the PP unit; since a positioner is installed at the top, the limit switch can only be placed on the side. Additionally, it needs to meet SIL requirements. I searched for a long time but was unable to find a limit switch that fits these conditions
The limit switch serves only as an indicator function, so there is no need to require a SIL rating. Who made such a request?
Yes, it only provides position feedback, but their technology definitely requires a SIL. Do you know of any models that come with one?
Haven’t seen it. But I can say for sure that it’s not necessary. Companies are afraid that people will make random requests without understanding such concepts.
We are a valve manufacturer based in Jiangsu. Our pneumatic valves have obtained SIL3 certification, and both the cylinders, feedback devices, solenoid valves, and valves themselves have been certified! Those in need can contact me at 15251600084; WeChat and mobile number are the same