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UST Program - LG 113

Issue Date: April 18, 1997
Revision Date: June 5, 2002

Gems Sensors, Inc.
(originally listed as Warrick Controls, Inc.)

Model DFP-25 Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector:

Output type: qualitative

Sampling frequency: continuous

Operating principle: product solubility

Test Results:

	unleaded gasoline	diesel	water
Detection time (hr:min:sec)	0:06:50	4:14:40	N/A
Fall time**	N/A*	N/A	N/A
Lower detection limit (cm)	£2.54	£2.54	N/A

* See glossary.
**Fall time is not applicable, since sensor must be replaced after activating.

Specificity Results:
Activated: Evaluator claims that this sensor will respond to any material that is capable of dissolving the hydrocarbon-sensitive wax.
Not Activated: Water.

Comments:
Sensor is activated when hydrocarbon-sensitive wax is dissolved, releasing a spring that activates an alarm.
Sensor is not reusable, and must be replaced after contact with hydrocarbons.
Liquid level was set at 1 inch (2.54 cm) during test.

The detector is not reusable and must be replaced after contact with hydrocarbons. California regulations require sensors to be tested annually to verify proper operation. This sensor is a self-destruct type and therefore cannot be used in California.

Gems Sensors, Inc.	Evaluator: Ken Wilcox Associates
1 Cowles Rd.	Tel: (816) 443-2494
Plainville, CT 06062-1198	Date of Evaluation: 11/18/96
Tel: (800) 378-1600

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