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5.16.6
Permitted zones for installation
Devices can be installed as follows:
①
②
③
Ambient side
Process side
Not all approvals are available with all models, see selection list for more information
5.16.7
Warnings for installation
Intrinsically safe supply
For intrinsically safe models, power must be supplied from an Intrinsically Safe power source,
otherwise protection is no longer guaranteed.
Process pressure
Devices with Ex Approval are approved for atmospheric pressure.
A detailed explanation is given below for ATEX and applies analogously for other Ex
approvals:
SITRANS LCS100 2-wire mA and Relay Version
Operating Instructions, 05/2023, A5E52142831-AA
Sliding sleeve
Ambient side
Process side
EPL
Category
Zone
EPL
Category
Zone
Dust applications
Gas applications
Marking Da/Db
Marking Ga/Gb
Db
Gb
2D
2G
21
1
Da
Ga
1D
1G
20
0
Connecting
5.16 Hazardous area installations
Marking Ga
Ga
1G
0
Ga
1G
0
33
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