Fisher ET - Manual

www.Fisher.com
SIL Safety Manual for Fisher
r ED, ET, EZ,
HP, or HPA Valves with 657 / 667 Actuator
Purpose
This safety manual provides information necessary
to design, install, verify and maintain a Safety
Instrumented Function (SIF) utilizing the Fisher ED,
ET, EZ, HP, or HPA valve with 657/667 actuator.
Introduction
This manual provides necessary requirements for
meeting the IEC 61508 or IEC 61511 functional
safety standards.
W1916-2/IL W6848-1
W8120A-1
ED or ET Valve EZ Valve HP Valve with FIELDVUE t
DVC6000 Digital Valve Controller
Figure 1. Fisher Valve with 667 Actuator
SIL Safety Manual
D103401X012
July 2010
ED, ET, EZ, HP, HPA Valves w/ 657/667 Actuator