Issue Date: March 11, 2011
Preferred Utilities Manufacturing Corporation
TG-EL-D4A Fuel Sentry Control Unit, PS-LDS Non-Discriminating Pump Set Leak Detector Switch
Out-of-Tank Product Detector (Liquid-Phase)
Detector
| Output Type | Qualitative |
|---|---|
| Sampling Frequency | Continuous |
| Operating Principle | Reed Switch/Float |
Test Results
PS-LDS Pump Set Leak Detector Switch (Sumps and Containments)
| Unleaded Gasoline | Diesel* | Water | |
|---|---|---|---|
| Detection time (sec) | Did not float | <5 | <5 |
| Fall time (sec) | Did not float | <5 | <1 |
| Lower detection limit (in) | Did not float | 1.322 | 1.187 |
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.
Detects leakage into the base pan of a pump set.
All stainless steel.
- Preferred Utilities Manufacturing Corporation
31-35 South Street
Danbury, CT 06810
Tel: (203) 743-6741 - Evaluator: Ken Wilcox Associates
Tel: (816) 443-2494
Date of Evaluation: 6/17/10
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