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PHOTOMETER HAVING A LONG LAMP LIFE, REDUCED WARM-UP PERIOD AND RESONANT FREQUENCY MIXING
PHOTOMETER HAVING A LONG LAMP LIFE, REDUCED WARM-UP PERIOD AND RESONANT FREQUENCY MIXING
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机译：光度计寿命长，减少了预热时间和共振频率混合
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摘要
an apparatus and method are presented for the photometric determination of the content of a sample, such as the absorption characteristics of a sample of blood serum. improvements in the techniques to take action after a heating period is reduced, and compensate for variations in the intensity of the lamp during the period of measurement.a return circuit exists between the photodetector and the light source base and allows the intensity of the light source is close to a final stable value asymptotically to an exponential curve slightly.a signal processing system processes the outputs of the photodetectors and reference sample taken at different times so as to compensate for variations in the intensity of the source during the time when there is output.in addition, the photometer is the combination of the resonant frequency of the contents of the bowl, where it occurs in the photometer, and vibrating at a frequency of vibration and the optical assembly in which is placed the bowl.a microprocessor controls the search routine is used to determine the resonant frequency of the optical assembly, which is easily recalculable whenever there is a change in the dimensions or mass of the optical assembly, or the contents of the bowl.
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