The Honeywell Excel Cross Duct is a Hazardous Area certified infrared open path gas
detector, for use in HVAC intakes and exhausts. The handheld interrogator has been certified for use in hazardous environments and is a tool for commissioning and maintenance. For direct connection to the Excel system, the SHC protection device module must be used.
Alarm levels should be set no lower than 20%LEL for the short range unit and 10% for the long range unit. The installation must be made where it is protected from dirt and condensation. Regular routine maintenance should include cleaning the reflector tiles, re-zeroing and functional test using the test filters.
There are 2 types: Short Range for ducts 0.5m – 2.5m width (ATEX and UL) and Long Range
for ducts 2.5m – 5.0m width (ATEX ONLY). Hazardous area approvals include European (ATEX) and North American (UL). Receiver output is 3 wire 4-20mA selectable sink or
source.
Standard calibration is Methane (gas mixtures where Methane is the main
constituent (>70%) and the balance is other hydrocarbons).
