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RADIAN <br />60 ORVOMwtlww <br />Results of Evaluation of Liquid -Phase Probe Model FD241R <br />The four -inch liquid probe was found to have 100% accuracy for 0.32 cm <br />and 0.64 cm thicknesses of .all test products. Average detection times at these levels <br />were less than three seconds. Average fall times were less than two seconds. None of <br />the test products was detected at thicknesses of 0.04 cm. The probe's accuracy was, <br />therefore, 0%b at this level. The results of accuracy and response time testing for this <br />probe are summarized in Table S. <br />Table 5 <br />Results of Accuracy and Response Time Testing for <br />Liquid -Phase Leak Detector Model FD241R <br />' <br />Test Product <br />- r.. <br />is <br />Commercial <br />Gasoline <br />1 1• 1 <br />�. <br />1 11 <br />i1 1 <br />.1� <br />11 1 <br />i .• i1 <br />� it 1 ,■' <br />11:1 <br />Synthetic <br />Gasoline <br />i i1 <br />I'f 1 <br />11 1 <br />1� 1 <br />i 1i <br />■ 11 1 <br />NA o Not applicable because detector did not respond. <br />Eight hydrocarbon liquids were used in specificity testing. The FD241R <br />responded to all of the specificity test products. The results of these tests are presented <br />in Table 6. <br />i <br />