The Enraf servo gauge 854 ATG/XTG is equipped with a patented Servo Auto Test feature that increases its safety integrity as well as diagnostic coverage, allowing it to be used in overfill protection loops to prevent spillage. It has a Safe Failure Fraction (SFF) of more than 90% which allows it to be used in SIL-2 safety loops. If used in a redundant configuration, the servo gauge can also be used in SIL-3 rated loops.
With these diagnostics, the safety proof-test interval can be extended to 5 years, significantly bringing down the operational cost compared to other solutions that require a proof test to be carried out every year. A highly accurate and advanced force transducer, microprocessor control and advanced software give users precise, reliable measurement and control.
Installation is easy. Almost any nozzle 2” and up can be used, even with the tank being in service. To simplify startup, calibration and servicing, the portable tool can be used to bypass the central system.
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