带SIL认证证书的进口调节阀 进口调节阀control valve(美国VTON威盾)是由电动执行机构或气动执行机构、自力式感应与阀体两部分共同组成,根据调节部位信号,自动调节阀门的开度,从而达到介质流量、压力和液位的阀门。
and use the pilot valve to open and close the driving piston to adjust the size of the overflow area at the throttle part of the main valve to realize the pressure reducing and stabilizing function. Therefore, the high-pressure steam produced in the factory needs to be depressurized to meet...
SIL认证就是基于IEC 61508(GB/T 20438), IEC 61511(GB/T 21109), IEC 61513, IEC 13849-1, IEC 62061, IEC 61800-5-2等标准,对安全设备的安全完整性等级(SIL)或者性能等级(PL)进行评估和确认的一种第三方评估、验证和认证。功能安全认证主要涉及针对安全设备开发流程的文档管理(FSM)评估,硬件可靠性计算和...
Functional Safety, as defined by IEC standard 61508, is the safety that control systems provide to an overall process or plant. The concept of Functional Safety was developed in response to the growing need for improved confidence in safety systems. Major accidents around the world, as well as ...
近日,宣达集团顺利通过SIL产品认证,并由TüV南德认证公司签发的证书,这标志着宣达实业集团有限公司又多获得了参与国际竞争的“通行证”。 据悉,宣达实业集团有限公司近期邀请南德认证检测(中国)有限公司上海分公司提供多种产品的认证和测试服务,根据IEC61508和IEC61511标准评估阀门和执行器所能达到的最高SIL等级评估并出具...
The SIS will have a SIF which might include a pressure transmitter which can sense when an intolerable level of pressure has been reached, alogic solverto control the system logic, and a solenoid valve which might vent the contents of the vessel into a safe location (flare stack, environment...
01 May 2012 Many actuator control valve products from Midland-ACS have now undergone third-party assessment to the IEC 61508 functional safety standard, and are certified to support SIL (safety integrity level) 3 capability. Control valves with this high level of safety integrity are increasingly ...
There are 4 SIL Categories (3 under ISA and 4 under IEC) The higher the SIL number is the more reliable or effective the system is.SIL probability of safe failure:SIL 1 90% SIL 2 99% SIL 3 99.9% SIL 4 99.9%As SIL relates to automated packages only, components (valve mounting kits...
iec61511 通常在sil验证中被采用, 除非在iec61508中, 通过传感器外部比较或阀的部分行程测试(partial valve stroke testing )来获得一个高的sff(safety failure fraction),以得到一个低的hft (hardware 15、fault tolerance)。硬件结束约束45type a:”非复杂非复杂”元件元件sff依据依据iec61508的的hft值值01260%...
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