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Until recently, tank owners were required to install many different <br />environmental systems to achieve their compliance goals. It is not <br />uncommon to rind facilities with a tank gauging system, line leak detection <br />system and a separate vapor detection system. Of the many problems this <br />creates, the major ones are: <br />No communication between systems. The tank level systems does not know when <br />the pump is running, therefore, if product is sold during a test, the amount <br />of sale is declared a leak at the end of the tank test. <br />Single source, proprietary hardware. The industry has protected technology by <br />not allowing standards to develop to allow probes to be used by multiple <br />SOC (controller units). As new, improved sensor technologies arrive the <br />tank owner is faced with abandoning not only the field probe but also the <br />investmeC t in the controller. <br />No standards for remote communication. Few systems have emerged with more <br />than an available communication port (usually RS -232). This is not <br />sufficient for most applications where specific communication protocols are <br />required to provide data integrity. <br />