Taking an intelligent look at what is inside your tank
February 2001
Level Measurement & Control
All it takes for petrol stations to measure the level of petrol in a tank accurately is the kind of intelligence built into the head of every Optilevel tank gauging system from Liquid Automation Systems.
Thanks to a microprocessor inside the head of the Optilevel probe, liquid level data is derived from the primary physical measurements. The system then calculates the tank volume based on this data either externally or by comparison with a calibration table stored in the processor electronics (capacitive comparison method.) The result is that low-cost external controllers can be used. The Optilevel probe can also be interfaced to a PC or fuel island terminal.
The Optilevel's HLS sensor's advanced technological design ensures that measurements are not affected by properties such as density or dielectric constant, electric resistance, additives, dirt deposits, submersible pumps, foam, vapour, sediment or surface turbulence. The electronics are located in the probe's head so that it can be exchanged in minutes without having to remove the probe. It can also be done during filling.
Optilevel offers many possible configurations to form an economical system: from low-cost Optilevel displays to high-performance Optilevel controllers 104, from direct modem or fuel terminal connections to certified EPSI and IFSF-LON standard interfaces. In fact, Optilevel is the first gauging system worldwide to comply with the latter standard (International Forecourt Standard Forum LON).
The compact Sensor head is tight and remains fully functional even if the tank containment sumps are permanently flooded. Because the system does not have any sensitive mechanical parts that can bend, floats than can become clogged or electronics that are located in the tank, it is robust.
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