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UST Program - LG 113

UST Programs - LG 113

Issue Date:  March 1, 2002

Pneumercator Company, Inc.

TMS 2000, TMS 3000 with
ES825-100(F) Non-Discriminating Liquid Sensor, ES825-200(F) Discriminating Liquid Sensor

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector:

Output type:

qualitative

Sampling frequency:

continuous

Operating principle:

optical sensor, electrical conductivity

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 ES825-200(F): 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.

ES825-100(F) Non-Discriminating Liquid Sensor

unleaded gasoline

diesel

water

Detection time (sec)

0.0226

0.0345

0.0172

Fall time (sec)

<1

<1

<1

Lower detection limit (in)

0.520

0.477

0.511

ES825-200(F) Discriminating Liquid Sensor

 

 

 

Detection time (sec)

0.0268

0.0438

0.0381

Fall time (sec)

<1

<1

<1

Lower detection limit (in)

0.401

0.365

0.416

Specificity Results:

Manufacturer claims sensors will respond to any liquid after sensor's threshold is exceeded.

Manufacturer's Specifications:

Both of the sensors are designed to connect to a controller system that indicates the status of the sensor.
Manufacturer indicates that discriminating sensor ES 825-200(F) incorporates an optical liquid sensor and a conductivity sensor.  The sensor discriminates between product and water by determining if the optical sensor, which responds to any liquid, or the conductivity sensor, which responds only to water, causes an alarm.

 

Pneumercator Company, Inc.

Evaluator:  Ken Wilcox Associates

120 Finn Court

Tel:  (816) 443-2494

Farmingdale, NY 11735

Date of Evaluation:  08/04/01

Tel:  (613) 293-8450

 

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