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Electro-Optic en Conditions a llr Response <br />NwMw Normal signal sent AJwm A Alarm signal T A Alarm signed <br />sdftn t to controller Camdftu T sent to controller sent to controller <br />Normally ' Liquid refracts System turns off <br />Closed beam beam of light — dight beam — <br />of'light receiver sees no receiver sees no <br />light and sends light and sends <br />alarm signal back an alarm signal <br />to the controller back to the <br />controller <br />R <br />LU Controller LU Controller LU Controller <br />OJAL A <br />WSSignal <br />ttt�`ii)Signal from sensor from sensor Signal from sensor <br />LPD Controller LPD Controller LPD controller <br />A IM <br />O 0 O `O� o O •t.P 04 <br />O 0 O � • 1G O •ii�iiQ ' O,^ <br />O® O /O\ c O �!`d 0 <br />rr llt; X111 �th ® U <br />Signal from sensor Signal from sensor Signal from sensor <br />OEL8000 OEL8000 j 1 OEL8l�0 <br />1. <br />,I. <br />0 E ® Po W. FNJLOK <br />T 6 L� ® � h u° FMAK Q/ C D ® h W FNA <br />ALnR1.1 Q �IARM�\ aLAR.U�. <br />0 ❑ ®MIN ®'..® <br />eu►fl6 y �vws t <br />ssesoner <br />q i <br />aEMcrlmar° zOTt <br />mw�°ra= <br />Signal from set t <br />nsor Signal from sensor Signal from sensor <br />Transmitter — sends light beam Receiver — receives light beamLight Beam Fuel <br />alarm diagram sensor.doc 04/13/00 <br />