Issue Date: November 22, 1995
Revision Date: August 23, 1999
 

Mallory Controls

Pollulert Probes MD221G/T, MD221G/TRA, MD241R, MD241RRA, MD241G, MD241GRA

OUT-OF-TANK PRODUCT DETECTOR (LIQUID-PHASE)

Mallory Controls no longer manufactures, services, or supports the use of this method.

Detector:

Output type:

qualitative

Sampling frequency:

continuous

Operating principle:

electrical conductivity

 

Test Results:

unleaded gasoline

synthetic gasoline

JP-4 jet fuel

MD221G/T, MD221G/TRA*

Detection time (sec)

4

7

2

Fall time (sec)

3

4

4

Lower detection limit (cm)

0.08-0.32

0.08-0.32

0.08-0.32

           

MD241R, MD241RRA, MD241G, MD241GRA**

 

 

 

Detection time (sec)

2

2

1

Fall time (sec)

1

2

2

Lower detection limit (cm)

0.16-0.32

0.16-0.32

0.16-0.32

*Evaluation was conducted using probe FD221G/TRA.
**Evaluation was conducted using probe FD241R.

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

Comments:
According to manufacturer, probes beginning with "MD" have identical performance as older probes beginning with "FD."  
Sensors are reusable.
Manufacturer no longer produces, services, or supports this equipment.

 

Manufacturer’s Previously Listed Contact

Evaluator:  Radian Corp.

Information is No Longer Valid.

Tel:  (512) 454-4797

 

Date of Evaluation:  07/08/91

 

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Equipment should be installed and operated in accordance with all applicable laws and regulations.  For full details, please refer to our expanded "DISCLAIMER" page.