High-precision narrow-band wavelength UVC illuminometer

Abstract

The invention relates to the technical field of high-precision illuminometers, in particular to a high-precision narrow-band wavelength UVC illuminometer which comprises an illuminometer body and a probe connected with the illuminometer body through a connecting line, the probe comprises a cover plate and a mounting base internally provided with a mounting groove, and the cover plate is fixedly arranged on the mounting base; a PCB is fixedly arranged on the inner side wall of the cover plate, a light inlet hole is formed in the position, corresponding to the mounting groove, of the mounting base, a glass sheet is arranged on the light inlet hole, a hollow connecting pipe is arranged in the mounting groove, a light filter is arranged in the hollow connecting pipe, one end of the hollow connecting pipe is connected to the PCB, the other end of the hollow connecting pipe is sequentially provided with a first iron sheet, a cosine sheet and a second iron sheet, the structure is simple, the error is small, the measurement is accurate, the environmental interference resistance is high, the device can be used for a long time, and frequent calibration is not needed.

Description

technical field [0001] The invention relates to the technical field of high-precision illuminance meters, in particular to a high-precision narrow-band wavelength UVC illuminance meter. Background technique [0002] The UVC illuminance meter is a measuring instrument for ultraviolet light sources in the UVC band, which can accurately measure the intensity of ultraviolet rays in the UVC band. Its application range is mainly used in the ultraviolet sterilization industry, including germicidal lamp ultraviolet rays in hospitals, disease control centers, pharmaceutical factories, food and drug bureaus, etc. Strength measurement. [0003] In the existing measurement technology, the optical signal is mainly converted into a current signal through a photosensitive sensor, transmitted to the detection terminal, and then converted into a voltage signal for measurement. In the whole process, there are many interference factors, such as stray light. Interference, electromagnetic envir...

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Problems solved by technology

[0003] In the existing measurement technology, the optical signal is mainly converted into a current signal through a photosensitive sensor, transmitted to the detection terminal, and then converted into a voltage signal for measurement. In the whole process, there are many interference factors, such as stray light. Interference, electromagnetic environment interference, weak electrical signals are affected by transmission impedance, etc., resulting in error amplification after detection, large measurement deviation, large impact by the environment, short use time, regular calibration, etc.

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