Capacitive proximity sensors CFBM 20 Capacitive proximity sensors sample drawing 79,5 ø 20 Pot LED general data sample picture nominal sensing distance Sn 10 mm nominal sensing distance Sn adjustable 2 ... 10 mm mounting type flush GND electrode yes temperature drift ± 15 % (+10 ... +70 °C) sensitivity adjustment potentiometer, 18 turn output indicator LED yellow electrical data voltage supply range +Vs 10 ... 30 VDC current consumption max. (no load) 20 mA output current < 200 mA voltage drop Vd < 2,5 VDC switching frequency < 50 Hz short circuit protection yes reverse polarity protection yes mechanical data type cylindrical smooth housing material brass nickel plated dimension 20 mm housing length 79,5 mm connection types cable, 2 m ambient conditions operating temperature -25 ... +75 °C protection class IP 65 field of application detection of non-conductive media yes fill level detection through container yes liquids in direct contact no object detection / bulk goods yes 1 www.baumer.com 2/6/2015 Capacitive proximity sensors CFBM 20 Capacitive proximity sensors order reference output circuit CFBM 20N1600 NPN make function (NO) CFBM 20N3600 NPN break function (NC) CFBM 20P1600 PNP make function (NO) CFBM 20P3600 PNP break function (NC) 2 www.baumer.com 2/6/2015