OPERATING MANUALOptical Sensor SwitchTechnical Data Sheet No. TD-OSS-052018Date of Issue: May 2018PICTURE SHOWINGOPTICAL SENSOR SWITCHESINSTALLED ON ATYPICAL ROTAMETERaalborg20 CORPORATE DRIVEORANGEBURG, NY 10962PHONE: 845.770.3000FAX: 845.770.3010e-mail: info@aalborg.comtoll free in usa or canada: 1.800.866.3837web site: www.aalborg.com®