Hydrostatic Gauging Systems

Enraf has been continually searching for new technologies and has developed remarkably innovative level measurement solutions tailored to your requirements. In the process, it has evolved a broad range of tank gauging instruments and systems. The modern and field proven Enraf advanced servo tank gauges and SmartRadar level gauges have become de-facto industry standards, needing virtually no maintenance while providing trouble free operation.

The techniques employed by Enraf tank gauging systems are complementary, yet each has its own advantage. The hydrostatic systems, which can be used in a mixed installation with SmartRadar level gauges and ATG and XTG servo gauges, include:

• Hydrostatic Tank Gauging HTG, a system based on the use of intelligent hydrostatic pressure transmitters. Basically the system is designed for direct mass measurement.
• Hybrid Inventory Measurement System HIMS, a system which combines both level based tank gauging and hydrostatic tank gauging. This system combines the best of direct mass measurement and level measurement.

Both Enraf HTG and HIMS systems have been made possible through the development of intelligent digital hydrostatic pressure transmitters. Important features which are necessary for tank inventory measurement include:

• Industry standard communication protocols, by using the HART and other proprietary protocols.
• Precise and reliable pressure measurement
• Stable data output achieved by an on-board microprocessor, allowing compensation for temperature effects and systematic transmitter deviations.
• High resistance to aggressive stored liquids by using materials such as Hasteloy C diaphragm material and stainless steel process flanges.