Issue Date: November 21, 2011
Fuel Oil Systems
Gems LS-750, Innovative Solutions L176-0108-0803 (Kele FS7SS), and Madison M4602-XXXX Sensors with Fuels Oil Systems Console - FOS-0160-1, software version 001
Interstitial Detector (Liquid-Phase)
Detector
| Output Type | Qualitative |
|---|---|
| Sampling Frequency | Continuous |
| Operating Principle | Float switch |
Test Results
| Water | Diesel | Propylene glycol | 50% by weight propylene glycol in water |
|
|---|---|---|---|---|
| Gems LS-750 Sump Interstice Sensor | ||||
| Detection time (sec) | <5 | <5 | <5 | <5 |
| Fall time (sec) | <5 | <5 | <5 | <5 |
| Precision - standard deviation (in) | 0.0029 | 0.0025 | 0.0002 | 0.0029 |
| Lower detection limit (in) | 1.094 | 1.285 | 1.053 | 1.088 |
| Innovative Solutions L176-0108-0803 (Kele FS7SS) Sump Monitoring Sensor | ||||
| Detection time (sec) | <5 | <5 | <5 | <5 |
| Fall time (sec) | <5 | <5 | <5 | <5 |
| Precision - standard deviation (in) | 0.0013 | 0.0027 | 0.0025 | 0.0027 |
| Lower detection limit (in) | 0.847 | 0.955 | 0.840 | 0.851 |
| Madison M4602-XXXX Tank Interstice Sensor | ||||
| Detection time (sec) | <5 | <5 | <5 | <5 |
| Fall time (sec) | <5 | <5 | <5 | <5 |
| Precision - standard deviation (in) | 0.0027 | 0.0023 | 0.0037 | 0.0043 |
| Lower detection limit (in) | 1.375 | 1.596 | 1.389 | 1.392 |
Specificity Results
Manufacturer and evaluator claim sensors will respond to any liquid. No additional materials were tested.
Manufacturer's specifications
Manufacturer states that any of the sensors can easily be removed, cleaned, and reinstalled if an alarm is triggered or for periodic testing.
Comments
The Gems LS-750 sensor is programmed normally closed. When installed in a hydrostatic fluid reservoir and the hydrostatic fluid level in the reservoir drops below the operating level of the float, this sensor opens and an alarm condition is generated.
The Innovative Solutions L176-0108-0803 sensor is programmed normally open. If liquid rises above the threshold of the Innovative Solutions L176-0108-0803 this sensor closes and an alarm condition is generated. When the sensor is mounted on the floor of a sump and liquid rises sufficiently an alarm condition is generated indicating there is liquid present in the area where the sensor is installed.
The Madison M4602-xxxx sensor is a two position level sensor used for underground storage tanks where the tank interstice is filled with hydrostatic fluid. The upper float of the Madison M4602-xxxx level sensor assembly is located above the hydrostatic fluid in the UST hydrostatic fluid reservoir and is programmed normally open. If the level of the hydrostatic fluid in the reservoir increases sufficiently to lift the float, the upper float closes and generates an alarm condition. The lower float of the Madison M4602-xxxx level sensor assembly is immersed in the reservoir's hydrostatic fluid and is programmed normally closed. If the level of the hydrostatic fluid drops below the operating level of the float, this sensor opens and an alarm condition is generated.
Alarms are indicated by an audible alarm; a visual message displayed on the Fuel Oil System console; and a printed message. The alarms are also recorded as part of the Fuel Oil Systems console "Alarm History Report."
The sensors and console are inclusive to one another, and are not suitable for interactive use of other leak detection equipment.
- Fuel Oil Systems
6681 Sierra Lane, Suite F
Dublin, CA 94568
Tel: (925) 556-5424
Email: info@fueloilsystems.net
URL: fueloilsystems.net - Evaluator: Ken Wilcox Associates
Tel: (816) 443-2494
Date of Evaluation:10/01/11
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