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LG 113 Vendor/Template Page 2 of 2 <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 ethylene glycol in water <br />where response time also included time for liquid level to rise from bottom of a test cylinder to trigger point. <br />Evaluator reports sensors can easily be removed, cleaned, and reinstalled after an alarm was triggered or for periodic <br />testing. <br />Sensors are reusable. <br />Single. Stage Hydrostatic Sensor 794380-301: <br />Intended to monitor level of either ethylene glycol or calcium chloride solutions in interstitial or annular space of a doublE <br />walled tank. <br />If the brine level in the reservoir drops below the threshold of the sensor, an alarm condition is generated. <br />The evaluation using 30% by weight calcium chloride in water was reevaluated using a different 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 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 threshold of high k <br />sensor, an alarm condition is generated. <br />Alarms are indicated by an audible alarm, displayed message on the console, printed message (if the console is equippec <br />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 Dates of Evaluation: 12/07/92, 03/16/98 <br />Tel: (860) 651-2700 Evaluator: Ken Wilcox Associates <br />Tel: (816) 443-2494 <br />Dates of Evaluation: 07/08/02, 02/02/03 <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 the <br />method or equipment. Equipment should be installed and operated in accordance with all applicable laws and regulations. <br />http://www.waterboards.ca.gov/ust/leak_prevention/lgI13/Vendor Files/veeder root_q.html 5/10/2005 <br />