METHOD OF ARRANGING WATER-LEVEL INDICATOR WITH REMOTE READING INDICATOR AND SITE READING INDICATOR

摘要

A water level indicating apparatus (10) has an optical system (22) for establishing an optical signal indicative of water level which signal is split by a beam splitter (18) to transmit the majority of the optical signal to a fiber optic cable (16) and to reflect a part of the signal to a proximately located (13) glass diffuser (14). The end 24 of the cable (16) is reflected in the beam splitter (18) to form a reflection (24') which varies in intensity as the end (24) of the cable (16) is moved with the brightest reflection (24') appearing when the lamp(26) of the optical system (22) is in line with the end (24) of the cable (16).