NCB8-18GM40-N0-OG

General specifications Switching element function NAMUR, NC Rated operating distance 8 mm Installation flush Output polarity NAMUR Assured operating distance 0 ... 6.48 mm Reduction factor r Al 0.39 Reduction factor r Cu 0.36 Reduction factor r 304 0.71 Nominal ratings Nominal voltage 8.2 V (R i approx. 1 kOm) Switching frequency 0 ... 1500 Hz Hysteresis 1 ... 15 typ. 5 % Reverse polarity protection reverse polarity protected Short-circuit protection yes Suitable for 2:1 technology yes , Reverse polarity protection diode not required Current consumption Measuring plate not detected min. 2.2 mA Measuring plate detected less than or equal to 1 mA Switching state indicator all direction LED, yellow Functional safety related parameters MTTF d 2660 a Mission Time (T M ) 20 a Diagnostic Coverage (DC) 0 % Compliance with standards and directives Standard conformity NAMUR EN 60947-5-6:2000 IEC 60947-5-6:1999 Electromagnetic compatibility NE 21:2007 Approvals and certificates UL approval cULus Listed, General Purpose CSA approval cCSAus Listed, General Purpose CCC approval CCC approval / marking not required for products rated less than or equal to 36 V Ambient conditions Ambient temperature -25 ... 80 °C (-13 ... 176 °F) Storage temperature -40 ... 80 °C (-40 ... 176 °F) Mechanical specifications Connection type cable PUR (halogen-free) , 2 m blue , Oil resistant , Flame-retardant as per IEC 60332-1 Core cross-section 2x 1 mm 2 , black Housing material Stainless steel 1.4305 / AISI 303 Sensing face PBT Housing diameter 18 mm Degree of protection IP66 / IP67 General information Use in the hazardous area see instruction manuals Category 1G- 2G- 3G