Equipment Protection Levels (Epl); Ex Ia / Ex Iad-Approved Devices; Ex D Ia / Ex Ia Tb-Approved Devices; Definitions Of Equipment Protection Levels - Ametek DR6300 SERIES Supplementary Instructions Manual

GENERAL SAFETY INFORMATION
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1.4 Equipment protection levels (EPL)

1.4.1 Ex ia / Ex iaD-approved devices

These devices are suitable for use in potentially explosive atmospheres of all flammable
substances in Gas Groups IIA, IIB and IIC. The Ex ia-approved device is certified for applications
for which an EPL of Ga, Ga/Gb or Gb is necessary. The Ex iaD-approved device is certified for
zone 20, zone 21/20 or zone 21 (combustible dust atmospheres).
DANGER!
The device must be fitted with the appropriate options.

1.4.2 Ex d ia / Ex ia tb-approved devices

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 when fitted with the appropriate options. It
is certified for applications for which an EPL of Ga/Gb or Gb is necessary.
The Ex ia tb-approved device is suitable for use in potentially explosive atmospheres of all
flammable substances in Dust Group IIIA, IIIB and IIIC when fitted with the appropriate options. It
is certified for applications for which an EPL of Da/Db or Db is necessary.

1.4.3 Definitions of equipment protection levels

EPL Ga or Da EPL Ga or Da EPL Ga or Da EPL Ga or Da
The device is installed in hazardous areas that must have equipment with a very high level of
protection. The device is not a source of ignition in usual conditions of operation or when
possible or unusual faults occur.
EPL Gb or Db EPL Gb or Db EPL Gb or Db EPL Gb or Db
The device is installed in hazardous areas that must have equipment with a high level of
protection. The device is not a source of ignition in usual conditions of operation or when
possible faults occur. It is possible that this does not include frequent faults.
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DR6300 SERIES
DR6300-LM IECEx, EDO 2-13-118, Issue 1