Honeywell Apex - 1. Introduction to the Apex System

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MAN0604_Issue 09_02-2013 Apex
2110M8030
1. INTRODUCTION
ApexisagasdetectionsystemthatconsistsofaTransmitterUnit,acertiedgassensorandaset
ofaccessories.TheTransmitterUnit,CertiedSensorandCertiedJunctionBoxaccessoryareall
certiedforuseinpotentiallyhazardousareasandareprotectedagainstwateranddustingress
to IP67.
Typical working environments are oil and gas distribution, petroleum extraction and chemical
manufacture.
System installation is straightforward. Components should be installed in accordance with the
procedures described in this handbook and to local or national installation codes of practice.
The Transmitter Unit acts as the local system controller and features a large LCD screen and
four control buttons that are used for operator interaction. Control of the system is implemented via
a system of software-driven hierarchical menus that include such operations as cartridge change,
systemconguration,etc.Remotecontrolofthesystemcanbemadeviaanoptional
digital interface.
TheTransmitterUnitcanhavetheCertiedSensorttedtoitlocallyormountedremotelyusinga
CertiedJunctionBoxandadditionalcablingupto100metreslong.
TheTransmitterUnitprovidesa4-20mAoutput,aswellasanoptionaldigitaloutput.Relaysfor
operating locally-wired devices, such as lights, horns, etc. are included. The range of accessories
enhances operation of the system and includes a collecting cone, weather protection, etc.
TheCertiedSensoriscompatiblewitharangeofmorethan40sensorcartridgesthatusecatalytic
bead,thicklmandelectrochemicalcells.
The interchangeable sensor cartridge determines which gas is monitored. All gas cartridges are fully
calibrated when supplied.
TheCertiedSensorusesintrinsicallysafecircuitstodrivethecartridges.Cartridgesmaytherefore
be exchanged without powering down even in the presence of an explosive gas atmosphere.
Field calibration of the sensor, if required, is also possible. The cartridges available are listed in
Appendix A.
The output from the sensor provides a gas concentration reading that is displayed on the LCD
screenonthefrontoftheTransmitterUnitandisalsotransmittedonthe4-20mAoutputandthe
optional digital interface.