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Ultraviolet flame sensor with programmable sensitivity offset

A sensitivity and sensor technology, applied in the field of ultraviolet sensors, can solve problems such as absolute sensitivity decline

Pending Publication Date: 2020-11-10
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, the absolute sensitivity of UV sensors tends to degrade over time, depending on usage, temperature and / or other environmental conditions, among other factors
As sensitivity decreases, burner equipment may need to be retuned, safety parameters adjusted and eventually the UV sensor replaced, all of which may require burner equipment recommissioning

Method used

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  • Ultraviolet flame sensor with programmable sensitivity offset
  • Ultraviolet flame sensor with programmable sensitivity offset
  • Ultraviolet flame sensor with programmable sensitivity offset

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Embodiment Construction

[0034] For terms defined below, these definitions control unless a different definition is given in the claims or elsewhere in this specification.

[0035] Whether expressly indicated or not, all numerical values ​​are assumed herein to be modified by the term "about". The term "about" generally refers to a series of numbers that one of skill in the art would consider equivalent to the recited value (ie, having the same function or result). In many instances, the term "about" may include figures that are rounded to the nearest significant figure.

[0036] Any recitation of numerical ranges by endpoints includes all numbers subsumed within that range (eg, 1 to 5 includes 1, 1.5, 2, 2.75, 3, 3.80, 4, and 5).

[0037] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. As used in this specification and the appended claims, the term "or" is generally employed in its...

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PUM

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Abstract

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 toproduce 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.

Description

technical field [0001] The present disclosure relates generally to ultraviolet (UV) sensors, and more particularly to UV sensors for use in combustion equipment. Background technique [0002] Ultraviolet (UV) sensors are designed to detect the presence of UV radiation. For example, UV sensors can be used to detect the presence of radiation in the spectral range of approximately 10 nm to 400 nm. [0003] UV sensors are used in many different product applications. For example, UV sensors can be used to detect the presence of flames in burners of combustion equipment. Detecting the presence of a flame within a burner can assist in operating the burner safely. For example, if a flame is not present in the burner, the burner may be shut off to help prevent unburned fuel from accumulating inside the burner. [0004] The absolute sensitivity of a UV sensor can vary between batches of new UV sensors. Also, the absolute sensitivity of UV sensors tends to degrade over time, depen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23N5/08G01J1/10
CPCG01J1/429G01J1/0228G01J2001/186G01J1/18F23N5/082F23N2229/04G01J2001/444G01K3/10G01J1/44
Inventor 布莱恩·扎贝尔查德·卡蒂亚伦·丹尼尔斯
Owner HONEYWELL INT INC
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