Issue Date: June 5, 1998
Revision Date: April 8, 2011
Veeder-Root
Dispenser Pan Sensor 847990-001 and Differentiating Dispenser Pan Sensor 847990-002 with Dispenser Control Interface
Interstitial Detector (Liquid-Phase)
Detector
| Output Type | Qualitative |
|---|---|
| Sampling Frequency | Continuous |
| Operating Principle | Product permeable, reed switch/float |
Test Results
*California requires annual certification of all leak detection equipment. The certification of discriminating sensors should include functional testing of both water and product detection capabilities.
Model 847990-002: This sensor can only respond to liquid directly in contact with the detection element, and is unable to detect a product release floating on an existing pool of water whose height exceeds the level of the detection element.
Dispenser Pan Sensor 847990-001
| Polymer Strip | Float Switch | ||
|---|---|---|---|
| Unleaded Gasoline | Diesel* | Water | |
| Detection time (sec) | <1 | <1 | <1 |
| Minimum product level (in) | 1.71 | 1.66 | 1.62 |
| Precision (in) | 0.006 | 0.004 | 0.008 |
Differentiating Dispenser Pan Sensor 847990-002
| Polymer Strip | Float Switch | ||
|---|---|---|---|
| Unleaded Gasoline | Diesel* | Water | |
| Minimum product thickness (in) | 0.06 | 0.06 | N/A** |
| Minimum product level (in) | 0.03 | 0.06 | 6.39 |
| Precision (in) | N/A*** | N/A*** | 0.008 |
| Detection time (min:sec) | 06:30 | 19:50 | <00:01 |
*Evaluations determined these sensors' responses to the liquids shown above and those indicated in the following section. 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.
**See Glossary.
***Tested at discrete levels only.
Specificity Results (in addition to above)
Activated: synthetic gasoline, n-hexane, toluene, xylene(s)
Not activated: water (polymer strip only)
Comments
Sensors are reusable.
These sensors do not require a console.
- Veeder-Root
125 Powder Forest Dr.
Simsbury, CT 06070-2003
Tel: (860) 651-2700
URL: www.veeder.com/us/ - Evaluator: Ken Wilcox Associates
Tel: (816) 443-2494
Date of Evaluation: 11/15/93, 11/02/98
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