Honeywell XNX Quick Start Manual page 7

HAZARDOUS LOCATIONS INSTALLATION REQUIREMENTS (UL/CSA/FM)
To reduce the risk of ignition of hazardous atmospheres, conduit runs must have a
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pour gland installed within 18 inches (457mm) of enclosure.
All ¾ inch NPT conduit, stopping plugs and adapters must be installed with 5 ¼
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threads (minimum) engaged to Maintain Explosion Proof rating.
The XNX Cover Assembly must be fully seated to enclosure 9 threads (minimum)
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to maintain Explosion Proof rating.
Stopping Plugs supplied (Honeywell Part Number 1226-0258) are approved for
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use ONLY with the XNX Universal Transmitter.
For units fitted with the optional relay module: Relay contact ratings are 250 VAC
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5A, 24 VDC 5A Resistive Loads Only.
Use copper conductors only, 60/75°C. Terminal block screws should be tightened
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to 4.5 lb/in maximum.
For models XNX-UT**-*****, refer to XNX control drawing 1226E0402 or, for
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models
XNX-BT**-*****, refer to control drawing 1226E0454 for additional information
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regarding IS function (local HART and EC personalities).
XNX Universal Transmitters carrying UL/CSA/FM approvals that are configured
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for devices measuring %LEL will not allow adjustments to the full scale value. The
range is fixed at 100%.
HAZARDOUS LOCATIONS INSTALLATION REQUIREMENTS (ATEX)
Read and understand Technical Manual 1998M0738 before installation and use.
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Use only Certified M25 cable glands for installation.
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Shielded armoured cable is required for CE compliance.
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Special conditions for safe use
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The following applies to the HART Barrier intrinsically safe circuits: For
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installations in which both the Ci and Li of the intrinsically safe apparatus
exceeds 1% of the Co and Lo parameters of the associated apparatus
(excluding the cable), then 50% of Co and Lo parameters are applicable and
shall not be exceeded, i.e. the Ci of the device plus the C of the cable must be
less than or equal to 50% of the Co of the associated apparatus, and the Li of
the device plus the L of the cable must be less than or equal to 50% of the Lo
of the associated apparatus.
For circuits connected to the EC barrier in which the capacitance and
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inductance exceed 1% of the permitted values, then the maximum permitted
capacitance is limited to 600nF for group IIC and 1uF for group IIIC.
The connection to the HART circuit shall be rated a minimum of IP 6X.
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XNX Universal Transmitter Quick Start Guide
7