Honeywell XNX-AM Series, Technical Manual

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XNX Universal Transmitter
Safety and Information 6
Read and understand this manual before installing, operating, or
maintaining the transmitter. Pay particular attention to these warnings and
cautions. All of the warnings and cautions shown here are repeated in the
appropriate sections of the manual.
• Warnings identify hazardous or unsafe practices which could result in severe injury
or death.
WARNING
!
Warnings
• Installation must be in accordance with the recognized standards of the
appropriate authority in the country concerned.
• Any work on the interior of the detector must be conducted only by Honeywell-
trained personnel
• Before carrying out any work, ensure that local regulations and site procedures
are followed. Appropriate standards must be followed to maintain the overall
certification of the sensor.
• To reduce the risk of ignition in hazardous atmospheres, disconnect the equipment
from the supply circuit before opening the sensor enclosure. Keep the assembly
tightly closed during operation. Conduit runs must have a seal fitting connected
within 18 inches (45 cm) of the enclosure.
• Never open the XNX enclosure under power unless the area is known to be non-
hazardous.
• Do not use the XNX Universal Transmitter in oxygen-enriched atmospheres. In
oxygen-enriched atmospheres, the electrical safety is not guaranteed.
• The sensor must be earthed/grounded for intrinsic safety, electrical safety and to
limit the effects of radio frequency interference. Earth/ground points are provided
inside and outside the unit. EMI note for applications using shielded cable: Cable
shield must provide 90% coverage of the wiring. Cable shield terminations must
be made at the cable glands with suitable EMI type glands. Avoid terminating
cable shields at the Earth ground lug inside the XNX enclosure. In cases where
wiring is in pipe, a shielded cable is not required. The external terminal is only a
supplemental bonding connection where local authorities permit or require such a
connection.
• Take care when handling EC sensor cells as they may contain corrosive solutions.
Do not tamper or in any way disassemble the sensor cells. Do not expose to
temperatures outside the recommended range. Do not expose the sensor to
organic solvents or flammable liquids.
• At the end of their working lives, sensors must be disposed of in an
environmentally safe manner, in accordance with local waste management
requirements and environmental legislation. Alternatively, sensors may be securely
packaged, clearly marked for environmental disposal, and returned to Honeywell
Analytics. Do NOT incinerate sensors as they may emit toxic fumes.
• High off-scale readings may indicate an explosive concentration of gas.
• Verify all outputs, including display, after installation, after service events, and
periodically to ensure the safety and integrity of the system.
• Do not use the transmitter in oxygen-enriched atmospheres. Concentrations
displayed will be adversely affected by oxygen depletion.
• After changing parameters with a handheld device, verify that the parameter
settings are correct at the transmitter.
• The factory-set passcodes must be reset to prevent unauthorized access to the
transmitter’s menus.
• When the transmitter is equipped with the optional Remote Mount Kit, the remote
sensor must be securely mounted in a fixed position. The Remote Sensor kit is not
intended to be used as a handheld sensor.