Siemens 6 Series Compact Operating Instructions page 10

FM and CSA
The following table contains the instructions and requirements for use of gas analyzers certified in accordance with CSA and
FM guidelines in hazardous areas of Class 1, Division 2 and Class 1, Zone 2.
Require-
ment for
Encapsula- Degree of protection IP20 of the gas analyzer requires
tion installation into suitable enclosures, cabinets or frames.
These must be equipped with preparations for connec-
tions of the cabling types of Division 2 and be approved
by the local authorities in charge.
Cable con- Only the types of cables and wiring methods listed below
nections are approved for the installation:
1. Type MI (Mineral Insulated),
type MC (Metal Clad),
type MV (Medium Voltage),
or
type TC (Tray Cable) with end connectors or cables
which are routed in cable tray systems so that tensile
stress at the cable ends is securely prevented
2. Type ITC (Instrumentation Tray Cable) in cable trays
or cable channels, supported by communication ca-
bles. These often require mechanical protection and
are routed openly or directly at the designated loca-
tion in the wall.
3. Type PLTC (Power Limited Tray Cable) in accord-
ance with the regulations of the National Electrical
Code, article 725 or the Canadian Electric Code,
rule 12-2202 or in cable tray systems.
4. encapsulated, sealed bus cables, encapsulated,
sealed connectors.
5. Heavy-gauge pipe thread
6. Steel pipe intermediate screwed joint
7. Any connection method that is suitable for class 1,
division 1.
Combus- For safety reasons we do not recommend using rack units for measurement of combustible gases. But be-
tible gases cause this is not explicitly prohibited in the regulations, the operator and the local authority in charge will
ultimately make this decision. Depending on the type of enclosure, cabinet or frame, the connection of a
purging gas monitor may be necessary; the decision is made by the local authority handling these matters.
Explosive Measurements of permanently explosive gases/gas mixtures are not permitted.
gases For safety reasons we do not recommend using rack units for applications in areas with a potential risk of
explosive gases/gas mixtures.
10
FM/CSA Class 1, Division 2
Compact Operating Instructions in accordance with EN 61010-1 and EN 60079-0
FM/CSA Class 1, Zone 2
Degree of protection IP20 of the gas analyzer
requires installation into suitable enclosures, cab-
inets or frames. These must be equipped with
preparations for connections of the cabling types
of Zone 2 that meet at least the requirements of
degree of protection IP54 and are approved by
the local authorities in charge.
Only the types of cables and wiring methods listed
below are approved for the installation:
1. Any connection method that is suitable for
class 1, division 2 (s. column on left).
2. Any connection method that is suitable for
class 1, zone 1.
A5E45779144002-01, 09/2018