GENERAL SAFETY INFORMATION
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OPTIWAVE X400
www.krohne.com
10/2017 - 4006413501 - AD NEPSI OPTIWAVE x400 R01 en
1.4.2 Ex d ia- and Ex iaD tD-approved devices
The Ex d ia-approved device has the markings that follow for Gas Groups:
OPTIWAVE 5400 and OPTIWAVE 6400
PP Drop antenna and PP accessories
•
Ex d ia IIC T5~T6 Ga/Gb
OPTIWAVE 5400 and OPTIWAVE 6400
All other versions
•
Ex d ia IIC T4~T6 Ga/Gb
OPTIWAVE 7400
All versions
•
Ex d ia IIC T3~T6 Ga/Gb
The Ex d ia-approved device is suitable for use in potentially explosive atmospheres of all
flammable substances in Gas Groups IIA, IIB and IIC. it is certified for applications requiring
EPL Ga/Gb or Gb equipment, when fitted with the appropriate options. It agrees with
temperature classes T6 thru T1 (Gas Groups) if the temperature limits are obeyed. For more
data, refer to
Ambient and process connection temperatures
on page 14.
EPL Ga/Gb equipment is used in zone 0, but it is installed in the boundary wall between zone 0
and zone 1 (the antenna is in zone 0 and the signal converter is in zone 1). EPL Gb equipment is
used in zone 1.
