Multi spectrum design - for long distance detection and high false alarm immunity Sensitivity selection - to ensure no zone crossover detection Automatic and Manual Built-In-Test (BIT) - to assure continued reliable operation Heated window - for operation in harsh weather conditions (snow, ice, condensation) Multiple output options for maximum flexibility and compatibility: Relays (3) for Alarm, Fault and Auxiliary - 0-20mA (stepped) - HART Protocol for maintenance and asset management - RS-485, Modbus Compatible High Reliability - MTBF - minimum 150,000 hours Approved to Safety Integrity Level 2 (SIL2 – TUV) 5-Year Warranty User Programmable via HART or RS-485 Hazardous area zones: Zones 1 & 2 with IIC gas group vapors present - Zones 21 & 22 with IIIC dust type present Ex approved to: ATEX & IECEx - FM/FMC/CSA - TR CU (EAC) 3rd party performance tested: EN54-10 (VdS) - FM3260 Marine Approval - MED ‘Wheelmark’ approval (DNV); Offshore Oil & Gas installations Onshore Oil & Gas installations and pipelines Chemical plants Petrochemicals plants Storage Tank farms Aircraft hangars Power Generation facilities Pharmaceutical Industry Printing Industry Warehouses Automotive Explosives & Munitions Waste Disposal facilities; Spectrex 40/40I - Data Sheet Spectrex 40/40I - User Guide Spectrex 40/40I - Accessories