... screen display, English menu clew operation SV-2LZ Filter Paper Smokemeter Main Technical parameters: FSN Measuremnt Range0~10( ... for diesel smoke discharge of free acceleration,2.Electric suction system, internal microcomputer control, automatic feeding paper, measuring, reseting, washing, ... 4.RS-232C interface, convient networking.5.Lack of paper automatic alarm.6.LCD screen display, English menu ...