Siemens 7MB2531 Operating Instructions Manual page 63

Assignment of pressurized enclosure Ex px with leakage compensation:
Explosion group
*) Assuming that the doors of the enclosure are opened at the earliest 10 minutes after switching off the
power.
Assignment of simplified pressurized enclosure Ex pz with continuous purging
Ignition protection type •
Temperature class *)
Explosion group
*) Assuming that the doors of the enclosure are opened at the earliest 10 minutes after switching off the
power.
Assignment of restricted breathing enclosure nR
Ignition protection type •
Temperature class *)
Explosion group
*) Assuming that the doors of the enclosure are opened at the earliest 10 minutes after switching off the
power.
Compact Operating Instructions in accordance with EN 61010-1 and EN 60079-0
Compact Operating Instructions, 09/2018, A5E45779389002-01
7.6 Technical specifications for operation in hazardous areas
IIC
Pressurized enclosure Ex pz with continuous purging: (Analyzer versions
7MB251x-xxx0x-xACx, 7MB201x–xxx0x–0xxx- or -1xxx-Z+E12 and
7MB211x–xxxxx–0xAx- or -1xAx-Z+E12, 7MB253x–xxxxx–xxCx)
Device
OXYMAT 6F, unheated
OXYMAT 6F, heated
ULTRAMAT 6F
CALOMAT 6F
CALOMAT 62F
IIC
Restricted breathing enclosure Ex nR: (Analyzer versions 7MB251x-xxx0x-
xABx,
7MB201x–xxx0x–0xxx- or -1xxx-Z+E11 and
7MB211x–xxxxx–0xAx- or -1xAx-Z+E11, 7MB253x–xxxxx–xxBx)
Device
OXYMAT 6F, unheated
OXYMAT 6F, heated
ULTRAMAT 6F
CALOMAT 6F
CALOMAT 62F
IIC
Technical specifications
Ex pz
T4
T3
T6 (T4 with PROFIBUS PA module)
T4
T4
Ex nR
T6
T4
T6
T6
T6
63