| 摘要 |
PURPOSE:To improve analytical accuracy by preventing the fluctuation of the temp. of a reaction line by using the radiation heat from a light source. CONSTITUTION:The light source device 20 having a light source lamp 33 is disposed in the position apart from a reaction line which is a path for conveying a reaction tube 8, i.e., on the rear of a base 32 to prevent the temp. of the reaction line maintained at a constant value from being affected by the heat generated from the device 20 in order to measure the absorbancy of the liquid to be tested formed by the reaction between the sample and reagent dispensed into the tube 8. The radiation light of the lamp 33 is projected through a filter device 21 and a branch fiber bundle 22 to the tube 8 existing in the photometric position. The light transmitted through the tube 8 is detected by a photodetector 23g and is analyzed by an amplifier 40g. Since the photodetector and amplifier are disposed in the constant temp. space existing above a jacket 29, the temp. drift is decreased and the analytical accuracy is improved. |
