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Principles of Operation ; Advance sensing technologies monitor against the threat of combustible and toxic gases and for oxygen deficiency, utilizing catalytic, electrochemical and infrared gas detection methods. / Approvals & Standards; cFMus 6310 cULus 1203/C22.2-30 Class I, Div. 1, Groups B, C, & D,Class II, Div. 1, Groups E, F, & G,Class III,CSA C22.2 No. 152 Combustible Gas Performance,CE EMC Directive: 89/336/EEC,CE ATEX Directive: 94/9/EC II 2G EEx d IIc T5,(Tamb -40°C to +60°C),TYPE 4X IP 66 / Applications; Agriculture,Automotive,Chemical,Construction,Gas Detection,General Industry,Manufacturing,Mining,Oil and Gas,Paper & Pulp,Telecommunications,Warehouse,Water/Wastewater / Hazards; Combustible Atmosphere,Leak Detection / Product Information; The ULTIMA XI Gas Monitor is a digital signal processor based, infrared point gas detector for continuous monitoring of combustible gases and vapors. Designed around a rugged 316 stainless steel enclosure, the ULTIMA XI Monitor is a completely self-contained, explosion-proof unit that is dependable in harsh environments. ULTIMA XI Monitor operation is based on dual wavelength-heated optics technology, providing definitive compensation for temperature, humidity and aging effects. The IR technology offers excellent long-term stability, eliminates the need for frequent calibrations and reduces overall cost of ownership.