CalibrationGasConcentration: 25%LELto105%LEL
AlarmThresholdLimits: 15%LELto100%LEL
(Alarm 1 and Alarm 2)
Poisoning: Thecartridgemaybecomeinactiveafterextensive
exposure to silicones, halogenated hydrocarbons, heavy
metals or sulfur compounds.
OxygenDeciency: DeletionofOxygenasaconsequenceofdisplacementby
ammablegascanresultinthegasreadingreturning
tozero.
StorageConditions: 0to25°C
30%to70%rH
80kPato110kPa
Thissub-sectionprovidesthespecicationsforeachoftheaccessoriesavailableforApex.
A.3.1 Certied Junction Box
TheCertiedJunctionBoxprovidesaremotemountingpointforthesensor.Itisdesignedtooperate
withthesensorcartridgesspeciedinthetablesinthissection.
Environmental
Operatingtemperature: -40to65°C(-40to149°F)
Operatinghumidity: 0-99%rh
Storage (excluding cartridge)
Temperature: -40to65°C(-40to149°F)
Humidity: 0-99%rh
EMC
MeetstherequirementsofEN50270(type2apparatus),EMC-ElectricalApparatusfortheDetection
and Measurement of Combustible Gases, Toxic Gases or Oxygen.
Enclosure
Physical: TheCertiedJunctionBoxhas:
One threaded hole in the base for mounting the
CertiedSensor-M20(European)or∫”NPT(North
American versions)
Twothreadedholesinthebasetoaccepttwocertied
M25cableglands(European)ortwo∫”NPTconduit
ttings(NorthAmericanversions).
Provision is made to attach a tag carrying an ID number.
TheenclosurematerialfortheCertiedJunctionBoxis
electro-polished grade 316 stainless steel (to BS3146
ANC 4B FM/BS3146 ANC 4C FM).
APPENDIX A - SPECIFICATIONS