UST Programs - LG 113

Issue Date: June 8, 2009

Preferred Utilities Manufacturing Corporation

PWCN4-CDXRxxx Controller, RBS Non-Discriminating Sensors for Sumps and Containments; PS-LDS Non-Discriminating Sensor for Sumps and Containments; PLS Non-Discriminating Sensor for Reservoirs

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector:

Output type:	qualitative
Sampling frequency:	continuous
Operating principle:	reed switch/float

Test Results:

Non-Discriminating Sensors RBS Rupture Basin Switch (Sumps and Containments)	diesel	water
Detection time (sec)	<1	<1
Fall time (sec)	<1	<1
Lower detection limit (in)	0.411	0.120
PS-LDS Pump Set Leak Detector Switch (Sumps and Containments)
Detection time (sec)	<1	<1
Fall time (sec)	<1	<1
Lower detection limit (in)	0.267	0.255
PLS Liquid Level Switch (Reservoirs - High and Low Level Floats - up to six floats)
Detection time (sec)	<1	<1
Fall time (sec)	<1	<1
Lower detection limit (in)	2.443	2.220

Comments:
Control panel models: PWCN4-CDXRxxx for liquid level sensors;
Can be used in normally open or closed positions, and wired to alarm or to shut down equipment.
Minimum Specific Gravity: RBS=0.65, PS-LDS=0.75; PLS=0.5

Preffered Utilities Manufacturing Corporation	Evaluator: Ken Wilcox Associates
31-35 South Street	Tel: (816) 443-2494
Danbury, CT 06810	Date of Evaluation: 1/20/09
Tel: (203) 743-6741
URL: www.preferred-mfg.com

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