Crowcon Xgard Bright, Инструкции по установке, эксплуатации и обслуживанию

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English
1. Introduction
1.1 Product overview
Xgard Bright is a versatile gas detector for monitoring a wide range of
flammable and toxic gases and oxygen levels.
Xgard Bright
incorporates a
bright OLED (organic light emitting diode) display and a magnetic wand for
easy menu operation.
Xgard Bright
provides analogue 4-20mA and RS-485 Modbus signals as
standard, with optional HART interface. Relays are also fitted for activating local
alarms or sending digital signals to control systems.
Xgard Bright
may be fitted with electrochemical type toxic or oxygen sensors,
pellistor-type flammable gas sensors, molecular property spectrometers (MPS),
or infrared (IR) hydrocarbon or carbon dioxide gas sensors. Please refer to the
product identification label to determine the type of sensor fitted.
Pellistor and MPS sensors are designed to detect flammable gases and vapours
in concentrations not exceeding the Lower Explosive Limit (LEL) of the target gas
for which the detector is calibrated.
Xgard Bright is ATEX and IECEx Ex db IIC T6 Gb flameproof certified for use in
Zone 1 or 2 hazardous gas areas and Ex tb IIIC T80°C Db for use in Zone 21 or
22 hazardous dust areas.
1.2 Safety information
Safety information relevant to Ex requirements:
• WARNING – POTENTIAL ELECTROSTATIC CHARGING HAZARD. The painted
aluminium enclosure constitutes a potential electrostatic hazard and the
equipment must only be cleaned using a damp cloth.
• The cable gland must be installed before use and must comply with the
requirements of standards EN60019-0 and EN60079-1 with minimum IP66
ingress protection.
• Unused cable entries must be sealed using an ATEX/IECEx Exd certified
stopping plug with minimum IP66 ingress protection.
• Only cables of types specific in these instructions can be used.
• External earthing should be considered and installed according to these
instructions before use.
• WARNING – DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE IS
PRESENT.