Specification 044, section 3.4 recommends two types of measurement technology, servo and radar ‐ Varec is able to provide both solutions. The servo tank gauge is recommended for BFIs because it offers the same accuracy as a radar gauge (+/‐ 1mm) with the added benefit of measuring fuel density (+/‐ 5Kg/m3) and water bottom (+/‐ 2mm).

Varec provides a choice of average temperature converters devices, including the NMT532 and the NMT539. Both devices use Pt100 temperature sensors and are seamlessly integrated with servo gauges or other instrumentation via the intrinsically safe HART communications interface. They use the connected instruments level reading to only account for the submersed elements to provide an average temperature measurement to an accuracy of +/ 0.5 Deg Celsius.

The NMT4539 provides the option for spacing measuring elements at any distance, allowing the 10 elements evenly spaced from the tank bottom to the maximum fuel level as outlined in Specification 044.  The NMT4532 provides a less expensive solution by using the industry best practice of spacing the elements at a fixed 2m interval.

All Varec products are backed by a one year manufacturer’s warranty.  In addition, we and our service partners can provide annual gauge calibration and system integrity verification.  These services go beyond the typical calibration checks offered by other vendors and include an independent system health check, verifying the overall BFI system accuracy, integrity and safety.  The specific verifications to be performed will depend upon your facility’s functionality, but includes instrument calibration, field communications, safety interlocks and predictive failure analysis.

For assistance with any system issues outside of the planned maintenance visits, Varec provides a 24/7 technical support centre staffed by product experts familiar with all aspects of MOD fuelling operations.