| 摘要 |
1,114,552. Recording-apparatus. TECHNICON CORPORATION. Oct. 19, 1965 [Nov. 2, 1964], No. 44137/65. Heading G1J. In a liquid sample analysis apparatus 24 with four optical benches measuring simultaneously the optical density of and hence the concentration of a substance in four portions of a sample by means of four null-balance bridges, including potentiometers 56 swept by sliding taps 54 to produce output potentials recorded by pens 52 in a recorder 26, capacitors 76 are coupled to the taps 54 to store potentials corresponding to the peaks of the output signals and the capacitors 76 are sequentially coupled through a digital voltmeter 114 to a printer and punch 118 to record the values of the peaks in digital form. A programmer 134 with seven cams and follower switches controls (1) drive mechanism 41 for advancing sample containers 16 to an off-take station 20 (2) aspiration of the sample from container 16 to apparatus 24 (3) positioning of the optical benches to measure the first four portions of the sample (4) read-out mechanism 42 to read the identification number on a card 18 on the container 16 from which was taken the sample whose analysis is approaching completion, and pulsing of the punch 118 to record the identity number and advance a stepping switch 86 to its second level (5) pulsing of the punch 118 to record sequentially the peaks then stored in the capacitors 76, and positioning of the optical benches to measure the next four portions (6) discharge of the capacitors 76, punching to record the remaining four peaks of the first sample (7) ejection of the punched card, feed of a new card for the next sample and resetting of the printer. |
