UST Program - LG 113

Issue Date: August 07, 2017

Franklin Fueling Systems

Franklin Fueling Systems EVO400, EVO200 with 
FMP-DIS-U Discriminating Interstitial Sensor and FMP-EIS-U Electro-Optical Interstitial 
Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector:

Test Results:

Manufacturer and evaluator claim that sensors will respond to any liquid. Evaluations determined these 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.

Comments:
Sensors can be removed, cleaned and reinstalled if an alarm is triggered or if the sensor is periodically tested. 
The FMP-DIS sensor uses two conductive pins to detect whether the liquid is water or fuel. When tested in three mixtures of water/E85 (i.e., 20%/80%; 30%/70%; and 70%/30%), the FMP-DIS sensor went into alarm when subjected to the upper and lower layers of water/E85. For the upper layer containing hydrocarbon, the DIS sensor indicated a product or alarm as designed. For the lower layer of liquid, the DIS sensor indicated a “water” alarm.

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