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State.Water Resources Control "-)ard Page 2 of 3 <br /> *Evaluation performed by Carnegie Mellon Institute. <br /> **Dual Stage Hydrostatic Sensor 794380-302 was replaced by Sensor 794380-303 and is not <br /> supported by TLS-450 series console. <br /> ***The "high" and "low" refer to high and low level alarm points of dual stage hydrostatic sensors. <br /> Comments: <br /> EMC Series and EMC Basic controllers have been evaluated only for use with sensors 794380-301 and <br /> 794380-303. <br /> Evaluator reports that sensors will respond to any liquid after their thresholds are exceeded. <br /> Response times measured from trigger point, except for sensor 794380-301 with 50% by weight <br /> ethylene glycol in water, where response time also included time for liquid level to rise from bottom of <br /> a test cylinder to trigger point. <br /> Evaluator reports sensors can easily be removed, cleaned, and reinstalled after an alarm was triggered <br /> or for periodic testing. <br /> Sensors are reusable. <br /> Comparison of TLS-450 with TLS-350 series console showed comparable results when evaluated with <br /> representative sensors. <br /> Single Stage Hydrostatic Sensor 794380-301: <br /> Intended to monitor level of either ethylene glycol or calcium chloride solutions in interstitial or annular <br /> space of a double-walled tank. <br /> If the brine level in the reservoir drops below the threshold of the sensor, an alarm condition is <br /> generated. <br /> The evaluation using 30% by weight calcium chloride in water was reevaluated using a different <br /> approved test protocol. <br /> Dual Stage Hydrostatic Sensor 794380-302: <br /> Alarm is activated if any significant gain or loss of solution occurs. <br /> Dual stage hydrostatic sensor 794380-303 has replaced this sensor and is fully interchangeable with <br /> this sensor. <br /> Vendor will discontinue production of this sensor as of December 31, 2003. <br /> Dual Stage Hydrostatic Sensor 794380-303: <br /> If brine level in reservoir drops below the threshold of low-level sensor or if any liquid rises above the <br /> threshold of high level sensor, an alarm condition is generated. <br /> Alarms are indicated by an audible alarm, displayed message on the console, printed message (if the <br /> console is equipped with a printer), and recorded as part of the console "Alarm History Report." <br /> Veeder-Root Evaluator: Carnegie Mellon Research Institute <br /> 125 Powder Forest Dr. Tel: (412) 268-3495 <br /> Simsbury, CT 06070-2003 <br /> Tel: (860) 651-2700 Dates of Evaluation: 12/07/92, 03/16/98 <br /> E-mail: dhalla@veeder.com Evaluator: Ken Wilcox Associates <br /> URL: www.veeder.com/dynamic/index.cfm Tel: (816) 443-2494 <br /> Dates of Evaluation: 07/08/02, 02/02/03, 03/03/08 <br /> Home I Vendors: A - F I Vendors: G - M I Vendors: N - S I Vendors: T - Z I Method Index I <br /> Appearance on this list is not to be construed as an endorsement by any regulatory agency <br /> nor is it any guarantee of the performance of the method or equipment. <br /> Equipment should be installed and operated in accordance with all applicable laws and <br /> regulations. <br /> For full details, please refer to our expanded "DISCLAIMER" page. <br /> http://www.waterboards.ca.gov/water_issues/programs/ust/leak—Prevention/lg 113/vendors/... 1/12/2016 <br />