Issue Date: April 18, 1997
Revision Date: August 18, 2010
 

Beaudreau Electric, Inc.

Model DFR-1 Liquid Level Switch, Models EOS100, 510 and 516 Discriminating Sensors
with Models 500 and 500C Controllers, Model 522 Remote Monitoring System,
Model 522T Monitoring System,
and ESite Monitoring System

INTERSTITIAL DETECTOR (LIQUID-PHASE)

Detector:

Output type:

qualitative, discriminating

Sampling frequency:

continuous

Operating principle:

float switch (Model DFR-1), refractive index of liquids (Model EOS100), polymer strip, hydrocarbon-only (Model 510), optical sensor and conductivity (Model 516)

Test Results:

Model EOS100 Discriminating Sensor (5 sensing levels)

 unleaded

gasoline

diesel

water

brine

Detection time (sec)

<1

<1

<1

 

Fall time

manual reset

manual reset

automatic reset when water level drops

 

Precision (in)

 

 

 

 

     Level 1 (low level switch)

0.005

0.002

0.003

 

     Level 2

0.006

0.002

not evaluated

 

     Level 3

0.004

0.002

not evaluated

 

     Level 4

0.004

0.002

not evaluated

 

     Level 5 (high level switch)

0.004

0.002

0.004

 

Lower detection limit (in)

 

 

 

 

     Level 1 (low level switch)

0.536

0.551

0.550

 

     Level 2

1.266

1.226

not evaluated

 

     Level 3

2.097

2.074

not evaluated

 

     Level 4

2.858

2.895

not evaluated

 

     Level 5 (high level switch)
 

3.569

3.57

3.596

 

Model 510 Discriminating Sensor

 

 

 

 

Detection time

5-10 min

1-2 hr

<1 sec

 

Fall time (sec)

Replaceable

Replaceable

<1

 

Precision - standard deviation (in)

<0.0001

<0.0001

0.0045

 

Lower detection limit (in)
 

0.058

0.058

11.566

 

Model 516 Discriminating Sensor

 

 

 

 

Detection time (sec)

<1

<1

<1

 

Fall time

<1

<1

<1

 

Precision - standard deviation (in)

0.0038

0.0032

0.0020

 

Lower detection limit (in)
 

0.340

0.369

0.389

 
Model DFR-1 Liquid Level Switch        
Detection time (sec)
low level switch
      <1
Reset is Automatic
Reset time (sec) low and high       <1
Detection time (sec)
high level switch
      <1
Precision- standard deviation (in) low and high level       0.004
Mean detection limit (in)       2.657 Low
11.777 High

Specificity Results:
Manufacturer and evaluator claim sensors will respond to any liquid. No additional materials tested.

Manufacturer’s Specifications:
Manufacturer states that systems require no calibration.
Annual functional test required.
Model 510 Discriminating Sensor and Model DFR-1 Liquid Level Switch are designed to work with Beaudreau Models 500, and 500C Controllers.
Model 516 Discriminating Sensor is designed to work with Beaudreau Models 500, 500C, and 512 Controllers.
Model EOS100 Discriminating Sensor is designed to work with Beaudreau Model 522 Remote Monitoring system, Model 522T Monitoring System,
and ESite Monitoring System.

Comments:
Model DFR-1 Liquid Level Switch, and Models EOS100 and 516 Discriminating Sensors are reusable.
The polymer strip used in Model 510 Discriminating Sensor is designed to be replaceable if desired.
This design allows the end-user to immediately reuse the sensor by replacing the polymer strip, instead of having to wait 24 to 48 hours for the polymer strip to dry out.
Replacement lowers the risk of false alarms caused by the use of partially dried out polymer strips.
Model 516 Discriminating Sensor is designed to be placed in a sensor well in bottom of a containment sump with at least one other sensor mounted higher as a high-water cut-off.
Both Models 510 and 516 Discriminating Sensors were not evaluated for the ability to detect a layer of hydrocarbon on water.
Model EOS100 has 5 sensing points that can sense fuel or water over a 3.5-inch range.  The highest sensor (level 5) acts as a high level switch. 
If water is detected at level 5, a fuel alarm will be triggered instead of a water alarm.
If fuel is detected at any of the levels, a fuel alarm will be triggered.
The output from the system can be used to shut down the turbines when fuel is present or when water reaches the high level switch. 

Model 522 Remote Monitoring System:
Evaluation indicates that when threshold level of Models EOS100, 510 and 516 Discriminating Sensors was reached, Model 522 Remote Monitoring System produced (1) an audible and visual alarm and (2) an output signal that was recognized by a Veeder-Root TLS-350 Monitoring System.
The TLS-350 Monitoring System produced an alarm within 10 seconds, and displayed and printed a notice of alarm and alarm time.
Manufacturer states that the output signal produced by Model 522 Remote Monitoring System can be recognized by other monitoring systems designed to detect this output signal.
Model 522 Remote Monitoring System was evaluated only using the Veeder-Root TLS-350 Monitoring System.

Model 522T Monitoring System:
Evaluation indicates that when threshold level of Models EOS100, 510 and 516 Discriminating Sensors was reached, Model 522T Monitoring System will generate a visual (LCD readout and LED “alarm” lamp) and audible alarm and also open up to three normally closed relay contacts.
By using a Model 522R Relay, the system can use these normally closed relay contacts to control power to turbine pumps.
Alternatively, the normally closed relay contacts can be used to send fuel alarm information to a Veeder-Root TLS-350 for both positive shutdown and additional alarm notification (such as a printout showing the date and time that a release has occurred).

ESite Monitoring System:
Uses an array of EOS-100 fiber optic discriminating sensors to provide for continuous monitoring of interstitial spaces or sumps.  Detection of liquid triggers audible and visual alarms on the ESite user interface screen.  Alarm information can also be transmitted to remote locations through network or internet connections.  The ESite Monitoring System provides for turbine pump and dispenser shutdown via the ESite output controller in the event any amount of fuel is detected, or water level reaches a height of 3.5 inches on the sensor.

 

Beaudreau Electric, Inc.

Evaluator: Ken Wilcox Associates

183 Providence New London Turnpike

Tel: (816) 443-2494

Pawcatuck, CT  06379

Date of Evaluation: 07/20/94

Tel:  (860) 599-3100

 (Revised 03/02/01, 09/23/02, 12/23/02, 08/28/03, 12/01/03, 05/23/05, 05/23/07)

E-mail: customerservice@beaudreauelectric.com  
URL: www.beaudreauelectric.com  
 

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