UST Programs - LG 113

Issue Date: March 11, 2011

Preferred Utilities Manufacturing Corporation
TG-EL-D4A Fuel Sentry Control Unit,
RBS Non-Discriminating Sensor for Sumps and Containments
OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Detector	Output Type	Qualitative
	Sampling Frequency	Continuous
	Operating Principle	Reed Switch/Float

Test Results	RBS Rupture Basin Switch (Sumps and Containments)	Unleaded Gasoline	Diesel*	Water
	Detection time (sec)	<5	<5	<5
	Fall time (sec)	<5	<5	<1
	Lower detection limit (in)	1.584	1.522	1.446
Comments	Control panel: Six intrinsically safe sensor inputs can be used for level indication and/or leak detection. Provides audible and visual alarms. Sensor: Primarily designed for use with diesel fuel and other distillates but can be used with other fluids - see mfg. for specific limitations. *This evaluation determined the sensors' responses to the liquids shown above. Biodiesel blends B6-B20 meeting ASTM D7467 and biodiesel B100 meeting ASTM D6751 would also produce an alarm if the sensor threshold is exceeded. Responses to these fuels were not determined, but would be expected to be very similar to the diesel responses. Detects leakage into day tank rupture basins and double wall piping leak containment systems containing diesel or distillate fuel oils. Horizontally mounted switch has redundant vpor and fluid sealing provisions, level float operated and magnetically activated.

Preferred Utilities Manufacturing Corporation	Evaluator: Ken Wilcox Associates
31-35 South Street	Tel: (816) 443-2494
Danbury, CT 06810	Date of Evaluation: 6/17/10
Tel: (203) 743-6741
Email: DCosgrove@preferred-mfg.com
Website: www.preferred-mfg.com

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