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California Edition:September 1997 <br /> Veeder-Root <br /> TLS-350/ 350 PC / 350R/350RPC <br /> Dual and Single Stage Hydrostatic Sensors (794380-301, -302) <br /> LIQUID-PHASE INTERSTITIAL DETECTOR <br /> Detector: <br /> Output type: qualitative <br /> Sampling frequency: continuous <br /> Operating principle: float switch <br /> Test Results: <br /> 50 wt% Ethylene glycol in water 30 wt% Calcium chloride in water <br /> up down U2 down <br /> Accuracy (%) 100 100 100 100 <br /> Response time (min) 22.52 35.75 20.46 37.07 <br /> Recovery time (min) <1 <1 <1 <1 <br /> Product activation height (cm) 33.1 3.9 32.2 4.0 <br /> *At a flow rate of 0.33 gal/hr in a test chamber of 7.8 cm diameter. <br /> Specificity Results: <br /> Not applicable <br /> Comments: <br /> Intended to monitor level of either ethylene glycol or calcium chloride solutions in interstitial or annular space <br /> of a double-walled tank. <br /> Activates alarm if any significant gain or loss of solution occurs. <br /> Test procedures used were modified by evaluator from Carnegie Mellon Research Institute's 'Test Procedures <br /> for Third Parry Evaluation of Leak Detection Methods: Point Sensor Liquid Contact Leak Detection Systems": <br /> Final Report- November 11, 1991. <br /> Detector is reusable. <br /> Veeder-Root Evaluator: Carnegie Mellon Research Institute <br /> 125 Powder Forest Dr. Tel: (412) 268-3495 <br /> Simsbury, CT 06070-2003 <br /> Tel: (203) 651-2700 Date of Evaluation: 12/07/92 <br /> 295 <br /> Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the performance of <br /> the method or equipment. Equipment should be installed and operated in accordance with all applicable laws and regulations. <br />