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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 <br />UP down <br />Accuracy (%) 100 100 <br />Response time (min) 22.52 35.75 <br />Recovery time (min) <1 <1 <br />Product activation height (cm) 33.1 3.9 <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 />30 wt% Calcium chloride in water <br />UP <br />down <br />100 <br />100 <br />20.46 <br />37.07 <br /><1 <br /><1 <br />32.2 <br />4.0 <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 Party 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 />