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