ABB 用于控制器自动化控制板 USART86-8CH 57088648
电磁流量计
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平均危险故障概率
PFDAVG按需安全功能的平均危险故障概率。SIL安全完整性等级国际标准IEC 61508定义了四个独立的安全完整性级别（SIL 1至SIL 4）。每个级别对应于安全功能失效的概率范围。安全相关系统的安全完整性等级越高，其无法执行所需安全功能的概率越低。低需求模式低需求操作模式测量类型，低请求率。安全相关系统的请求率不超过每年一次且不超过重新测试频率的两倍的测量类型。DCS分布式控制系统工业应用中用于监控分散装置的控制系统。HMI人机界面在这种情况下，HMI是一个组合模块，由带或不带本地键盘的LCD显示器组成。DTM设备类型管理器DTM是一个软件模块，支持访问设备参数、设备设置和操作以及诊断的特定功能。DTM不是可执行软件。它需要FDT容器程序才能激活。LRV设备配置测量范围的下限值。
electromagnetic flowmeter
We reserve the right to make technical changes to the product or modify the content of this document without notice. For purchase orders, the agreed details shall prevail. ABB assumes no responsibility for any errors or incomplete information in this document. We reserve all rights to this document and the items and images it contains. Without the prior written permission of ABB, it is prohibited to copy, disclose or use the contents of this document (including some contents) to third parties. copyright © 2019 ABB All rights reserved 4 Data sheet | 2019-05-15 | All rights reserved © 2019 ABB Measurement and Analysis | SIL-SAFETY CONSTRUCTION ProcessMaster FEP300, FEP500 Sanitary Master FEH300, FEH500 Electromagnetic Flowmeters Electromagnetic flowmeters for liquid flow measurement, conductive powder or paste 0 Sanitary Master FEH100, FEH500 1 acronym describes the hardware fault tolerance of HFT hardware fault tolerance devices. The ability of a functional unit (hardware) to continue to perform required functions when faults or errors prevail. Mean time between failures. MTTR Average Recovery Time - The average time between the occurrence of an error in a device or system and its repair. PFD On Demand Dangerous Failure Probability Dangerous failure probability of on-demand safety functions.
Mean Dangerous Failure Probability
Average dangerous failure probability of PFDAVG on-demand safety function. The international standard of SIL safety integrity level IEC 61508 defines four independent safety integrity levels (SIL 1 to SIL 4). Each level corresponds to the probability range of safety function failure. The higher the safety integrity level of safety related systems, the lower the probability that they cannot perform the required safety functions. Low demand mode Low demand operation mode Measurement type, low request rate. The request rate of safety related systems shall not exceed once a year and shall not exceed twice the retest frequency. DCS distributed control system is a control system used to monitor distributed devices in industrial applications. HMI human-machine interface In this case, HMI is a combined module, which is composed of LCD display with or without local keyboard. DTM Device Type ManagerDTM is a software module that supports access to specific functions for device parameters, device settings and operation, and diagnostics. DTM is not executable software. It requires the FDT container program to activate. LRV equipment configures the lower limit of the measurement range.
