UFM7/UPRS6 COMBINED MAGNETIC FIELD, UV AND AMBIENT LIGHT METER
For use with ASAMS 3 and 12.
This instrumentation package is designed to enhance the integrity of sub-sea MPI by enabling measurement of magnetic ïeld strength, ambient visible light, and ultra-violet irradiance with a single sub-sea module. It has been proven over several years service in the North Sea and elsewhere. In practice, it allows the user to replicate previous work-face MPI conditions on subsequent inspections, thus reducing the probability of spurious or missed indications. Initial inspections beneït from using a known and measured set-up.
The charging circuitry has been enhanced to give effectively penetratorless charging, the stainless steel switch knob being used as one contact and the grab-ring the other. Internal electronics double-isolate these contacts to ensure that no current can ïow OUT of them, thus preventing both external discharging via the contacts and damage from charger misconnection. Additionally, a fuse has been incorporated within the battery pack that provides protection against both short circuits and excessive charging currents. Total safety is therefore ensured, and the elimination of a waterproof connector for charging provides cost and reliability advantages to the user.
The display is a 12.5mm back-lit Liquid Crystal, and ranges are selected by a rotary switch. This switch has no detents, and no end-stops, thus minimising the potential of damage by abuse. The selected range is clearly shown by indicators on the unit, as is the ‘Low Battery’ condition. The magnetometer is a surface magnetometer, working on AC ïelds and is generally thought to be the only type of device that will measure the ïeld below the surface of the parent metal.
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02/27/2024
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