Fm And Csa - Siemens 7MB2531 Operating Instructions Manual

Assembly/installation
3.2 Installation location requirements
3.2.2

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 IP65 of the gas analyzer meets all requirements; no additional measures are required
tion
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
that are routed in cable tray systems in such a way that
tensile stress at the cable ends is reliably prevented.
2. Type ITC (Instrumentation Tray Cable) in cable trays or
cable channels, supported by communication cables.
These require mechanical protection and are routed
openly or directly concealed at the marked location.
3. Type PLTC (Power Limited Tray Cable) in accordance
with the provisions 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.
Combusti‐ Measurements of combustible gases are only permitted with a device made of piping and an additional purge gas
ble gases monitoring (e.g. Siemens Minipurge, Order No. 7MB8000-1AA).
Explosive Measurements of gases/gas mixtures that are always explosive are not permitted. Measurements of gases/gas
gases mixtures that are rarely or temporarily explosive are only permitted with devices made of piping that are provided
with flame arrestors and have additional purge gas monitoring.
26
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
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.
Compact Operating Instructions, 09/2018, A5E45779389002-01