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UST Program - LG 113

UST Programs - LG 113

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

OPW Fuel Management Systems
(originally listed as Petro Vend, Inc.)

Petrosentry IV, Petrosentry VIII, SiteSentinel with
Liquid Sensor, Universal Sump Sensor, Universal Reservoir Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

 

Detector:           

Output type:

qualitative

Sampling frequency:

continuous

Operating principle: thermal conductivity (Liquid Sensor),
float switch (Universal Sump Sensor, Universal Reservoir Sensor)

Test Results:

unleaded gasoline 

Liquid Sensor

 

Response time (min)

0.51

 

Recovery time (min)

<1

 

Product activation height (cm)

0.35

 

Lower detection limit (cm)

0.76

 

Universal Sump Sensor

 

 

Response time (min)

8.32

 

Recovery time (min)

<1

 

Product activation height (cm)

3.37

 

Lower detection limit (cm)

3.97

 

 

 

Universal Reservoir Sensor

 

50% by weight

ethylene glycol in water

 

30% by weight

calcium chloride in water

 

high*

low*

high

low

Response time (min)

19.62

16.86

17.77

15.91

Recovery time (min)

<1

<1

<1

<1

Product activation height (cm)

20.9

5.90

20.5

5.95

*The "high" and "low" refer to high and low level alarm points of hydrostatic sensors.

Specificity Results (in addition to above for Liquid Sensor and Universal Sump Sensor):
Activated:  diesel, synthetic gasoline, heating oil #2, water.

Comments:
Universal Reservoir Sensor is intended to monitor level of either ethylene glycol or calcium chloride solutions in the interstitial or annular space of a double-walled tank. 
Universal Reservoir Sensor activates an alarm if any significant gain or loss of solution occurs. 
Sensors are reusable.

 

OPW Fuel Management Systems

Evaluator:  Carnegie Mellon Research Institute

6900 Santa Fe Dr.

Tel:   (412) 268-3495

Hodgkins, IL 60525-9909

Date of Evaluation:  10/15/92

Tel:  (708) 485-4200

 

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