
Glossary
SIPART PS2 with and without HART communications
238 Operating Instructions, 09/2007, A5E00074631-07
Zone 1
Area in which potentially explosive gaseous atmospheres build up occasionally during the
normal operation of a device.
Zone 2
Area in which potentially explosive gaseous atmospheres normally never build up or build up
for a short while during the normal operation of a device.
Zone 22
Zone 22 is an area in which a potentially explosive gaseous atmosphere in the form of a
cloud of combustible dust in air never develops or develops only for a short while during
normal operation.
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