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9 0 <br />CEI Series 3000/2000EX <br />Features <br />T h e C E I A rrWrmmRiy.� �_;aV#Na Af <br />and fuel collected in the annular space of fiberglass double-wall tanks. The device <br />uses light refraction to detect the presence of any liquid. The probe uses conductivity <br />to detect the presence of hydrocarbons. <br />Benefits <br />The size of the probe allows it to be inserted into the annular space of a fiberglass, <br />double- wall tank. The probe will distinguish and report fuel and water collected in <br />this space. <br />Type (Water Detection) Light Refraction <br />Type (Fuel Detection) Conductivity <br />Recommended Location <br />The probe is installed at the bottom of the annular space of the fiberglass double-wall <br />tanks. It is installed by using a pull string. <br />41 <br />Control Engineers, Inc. Page 16 <br />