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Explosion-protected Version with Type of Protection II 3G
for Measurement of Non-flammable Gases and Vapors:
Description and Special Conditions for Operation
Intended Application
Special Version
Designation
Description
Special Conditions
for Operation in
Hazardous Areas
42/24-10 EN Rev. 9
The AO2000 Series gas analyzers with type of protection II 3G are tested for
explosion protection. They are suitable for use in hazardous areas in compliance
with the technical data (see "Installation Location Requirements" section,
page 1-1) and the special conditions (see below). They may be used for the
measurement of non-flammable gases and vapors.
The explosion-protected version with type of protection II 3G for the measurement
of non-flammable gases and vapors is a special version of the AO2000 Series gas
analyzers. This version is different from other versions by the following designation
on the identification plate.
II 3G EEx nAC II T4 X
In undisturbed operation there cannot be any sparking, arcing or impermissible
temperatures inside the device.
For further information please refer to the Declaration of Conformity which can be
found on the CD-ROM delivered with the gas analyzer.
• The device must be switched off when it is observably disturbed (i.e. when it is
not in undisturbed operation).
• The connectors may not be plugged in or unplugged while the power is on.
• The analyzer housing may not be opened while the power is on.
• All cables must enter via the specified cable fittings and be sealed by tightening
the nuts in accordance with IP54.
• Unused cable fittings must be closed off with plugs in accordance with IP54.
• Measures must be taken outside the device against intermittent noise on the
data lines (transients) exceeding 84 VAC/ 105 VDC.
• Only the original battery types Varta CR2032 (type no. 6032) or Renata CR2032
may be used as replacement for the battery on the system controller.
AO2000 Series Operator's Manual
xiii
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