Mueller International, LLC

P B Diagnostic Systems, Inc.

Gary Lee Webber

Fareed Kureshy

Shailendra Singh

A node includes a circuit board assembly having a circuit board and a processor mounted to the circuit board, the processor comprising a pin and an analog-to-digital converter (ADC) in electrical communication with the pin, the circuit board defining a test point formed therein, the test point electrically communicating with the pin via a trace covered with an insulator; and a non-transitory memory resource, the non-transitory memory resource having computer-executable instructions stored thereon that, when executed by the processor, cause the processor to apply electrical charge to the test point after the circuit board assembly has been encased in potting compound, and command the ADC to read a test point voltage at the test point, the test point voltage indicating voltage of an equivalent RC circuit comprising the insulator as an equivalent capacitor and the potting compound as an equivalent resistor.

Potting moisture detection system and method

A temperature controlled chamber for an analytical instrument which includes a circular conveyor for transporting assay cartridges, the chamber enclosing the outer peripheral part of the conveyor on which the assay cartridges reside. The temperature controlled chamber has a bottom wall of polymeric material located beneath the conveyor, an outer wall of polymeric material extending upward above the conveyor, a metallic top wall and a metallic inner wall which extends downward to the upper surface of the conveyor. Thermal control, including rapid thermal response to compensate for temperature perturbations induced by periodic introduction of assay cartridges which are at a temperature less than that of the chamber, is accomplished by heating elements located above and below the conveyor. The heating elements are pulsed by an electrical circuit at a rate substantially faster than the rate of introduction of new assay cartridges. Pulses of electric current applied to the heating elements are modulated with pulse-width modulation to adjust the temperature within the chamber in response to signals emitted by a temperature sensor located within the chamber.

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Sharon, MA, United States of America

Gary Lee Webber