UST Programs - LG 113

Issue Date: November 22, 1995
Revision Date: October 18, 2002

OPW Fuel Management Systems
(originally listed as Emco Electronics, Tuthill Transfer Systems)

EECO System, Leak Sensor II, Leak Sensor Jr.
Thermistor and Proximity probes

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector:

Output type:	qualitative
Sampling frequency:	continuous
Operating principle:	thermal conductivity, proximity switch

Test Results:

	unleaded gasoline	synthetic gasoline
EECO System
Detection time (sec)	<5	<5
Fall time	manual reset	manual reset
Lower detection limits (cm)
Thermistor	1.22	1.12
Proximity	0.97	1.04
Leak Sensor II
Detection time (sec)	<5	<5
Fall time	manual reset	manual reset
Lower detection limits (cm)
Thermistor	1.14	1.14
Proximity	1.12	1.17
Leak Sensor Jr.
Detection time (sec)	<5	<5
Fall time	manual reset	manual reset
Lower detection limits (cm)
Thermistor	1.24	1.19
Proximity	1.12	1.17

Specificity Results (in addition to above):
Activated: n-hexane, diesel, jet-A fuel, toluene, xylene(s), water.

Comments:
Sensors are reusable.
Systems alarm if either water or product leaks into interstitial space.

OPW Fuel Management Systems	Evaluator: Ken Wilcox Associates
6900 Santa Fe Dr.	Tel: (816) 443-2494
Hodgkins, IL 60525	Date of Evaluation: 11/09/92
Tel: (708) 485-4200

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