Table of Contents
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Product Overview
The following table provides an overview of the zone categories:
Table 2-3
Zone
0
1
2
Safe area
Types of Protection of the ET 200iS
The types of protection include design and electrical measures relating to the
equipment to achieve explosion protection in the hazardous areas .
The ET 200iS has the following types of protection:
Properties and Types of Protection
The types of protection of the ET 200iS have the following significance:
Table 2-4
Type of
Protection
Intrinsic safety i
2-10
Classification of Zones
Degree of Hazard
Explosive atmosphere is continuously
present or present for long periods or
often present
Explosive gas atmosphere is
sometimes present
Explosive gas atmosphere is seldom
present and then only for a short time
No
Properties and Types of Protection
Meaning
All voltages, currents, inductance
and capacitance occurring are
limited by electrical measures
(intrinsically safe) - sparks or
thermal effects capable of causing
ignition cannot occur.
Example
Within containers.
In the region of openings for filling
and emptying.
Areas bordering on zone 1
Standard Applications or
distributed I/O
Representation
ET 200iS Distributed I/O Station
A5E00087831-02
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