Emerson Mobrey Series, Руководство по функциональной безопасности

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1
Functional Safety Manual
M310/FSM, Rev BA
Introduction
April 2017
Introduction
Section 1 Introduction
1.1 Scope and purpose of the safety manual
This safety manual contains the information to design, install, verify and maintain a Safety Instrumented
Function (SIF) utilizing the Mobrey Magnetic Level Switch.
The manual provides the necessary requirements to enable the integration of the horizontal point-level
float switch when showing compliance with the IEC 61508 or IEC 61511 functional safety standards.
It indicates all assumptions that have been made on the usage of the level switch. If these assumptions
cannot be met by the application, the Safety Integrity Level (SIL) capability of the product may be
adversely affected.
Note
For product support, use the contact details on the back page.
1.2 Skill Level Requirement
System design, installation and commissioning, and repair and maintenance shall be carried out by
suitably qualified personnel.
1.3 Safety messages
Procedures and instructions in this section may require special precautions to ensure the safety of the
personnel performing the operation. Information that raises potential safety issues is indicated by a
warning symbol (
). Refer to the following safety messages before performing an operation preceded
by this symbol.
Failure to follow these guidelines could result in death or serious injury.

Make sure only qualified personnel perform the installation.
Explosions could result in death or serious injury.

Verify that the operating environment of the level switch is consistent with the
appropriate hazardous locations certifications.

Do not remove the level switch covers in explosive atmospheres when the circuit is alive.
Electrical shock can result in death or serious injury.

Avoid contact with the leads and terminals. High voltage that may be present on leads can
cause electrical shock.

Make sure the main power to the level switch is off, and the lines to any other external
power source are disconnected or not powered while wiring the level switch.