Honeywell International Inc.

Chad Carty

Brian Zabel

Barrett E Cole

Aaron Daniels

Joseph S F Goh

A controller unit for controlling an ultraviolet (UV) sensor may be excited by an excitation voltage that enables the UV sensor to detect incoming UV light. The UV sensor may provide UV detection events that may be related to the intensity of the incoming UV light. The control unit may include an excitation voltage generator, an event detector, and a controller configured to cause the excitation voltage generator to produce an excitation voltage for a cumulative excitation time that is less than 50% of the time, which may significantly increase the operational lifetime and/or reliability of a UV sensor.

Ultraviolet flame sensor with dynamic excitation voltage generation

A programmable controller for controlling an ultraviolet (UV) sensor may adjust an excitation voltage provided to the UV sensor based at least in part on a programmable sensitivity offset in order to produce an excitation voltage that results in a desired UV sensitivity for the UV sensor. The programmable sensitivity offset may be set for the UV sensor at the factory, set during commissioning of the UV sensor in the field, and/or automatically altered over time to help compensate for a degradation in sensitivity of the UV sensor.

Ultraviolet flame sensor with programmable sensitivity offset

Utilizing a quench time to deionize an ultraviolet (UV) sensor tube are described herein. One method includes monitoring firing events within a UV sensor tube, where a particular firing event initiates arming the UV sensor tube, initiating a quench time to deionize the UV sensor tube, where the quench time includes, disarming the UV sensor tube to prevent a firing event.

Utilizing a quench time to deionize an ultraviolet (UV) sensor tube

Methods, devices, and systems for determining failure of an ultraviolet (UV) sensor are described herein. One device includes a memory, and a processor configured to execute executable instructions stored in the memory to reduce an excitation voltage of a UV sensor until no conduction occurs in the UV sensor, increase, upon no conduction occurring in the UV sensor, the excitation voltage of the UV sensor until a conduction event occurs, compare the excitation voltage at which the conduction event occurs to a reference voltage, and determine whether the UV sensor has failed based on the comparison.

Determining failure of an ultraviolet sensor

Methods and systems are described herein. One method includes scanning, using a sensor, a first wavelength range of refracted light emitted from a flame, revising a position of a prism and/or the sensor based on the scan of the first wavelength range, and scanning, using the sensor after revising the position of the prism and/or the sensor, a second wavelength range of refracted light emitted from the flame.

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Nobelsville, IN, United States of America

Chad Carty