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Issue Date: March 11, 2011
Preferred Utilities Manufacturing Corporation
TG-EL-D4A Fuel Sentry Control Unit,
PLS-1 Non-Discriminating Sensor for Reservoirs
OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)
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Detector |
Output Type |
Qualitative |
| Sampling Frequency |
Continuous |
| Operating Principle |
Reed Switch/Float |
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Test Results |
PLS Liquid Level Switch (Reservoirs)
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Unleaded Gasoline |
Diesel* |
Water |
| Detection time (sec) |
<5 |
<5 |
<5 |
| Fall time (sec) |
<5 |
<5 |
<5 |
| Lower detection limit (in) |
2.603 |
2.668 |
2.283 |
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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 manufacturer 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.
Provides up to six independent liquid level switches on one sealed probe up to 72 inches length.
May be used with any clean, low viscosity, non adhering fluid compatible with brass, solder, epoxy and Buna-N.
Used on fuel oil day tanks to control the addition of oil from remote pumps and alarm at high and low levels.
Can also be used for detection of leaks into sumps or other containment vessels used to collect liquids containment pipeline leaks or other types of sump.
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Preferred Utilities Manufacturing Corporation
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Evaluator: Ken Wilcox Associates
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31-35 South Street
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Tel: (816) 443-2494
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Danbury, CT 06810
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Date
of Evaluation: 6/17/10
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Tel: (203) 743-6741
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| Email: DCosgrove@preferred-mfg.com |
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| Website: www.preferred-mfg.com |
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