Sampler control system for chromatograph analytical apparatus

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73 231, 73 611C, G06F 728, G06F 1506, G06F 1546

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active

040633101

ABSTRACT:
An automatic liquid sampler for a gas chromatograph includes a sampling mechanism and a control system which controls both the sampling mechanism and other functions of the chromatograph. Four sub-programs are stored in an integrated circuit read-only memory. A complete program for analyzing a series of samples consists of a sequence of the sub-programs read out by a counter under the control of a logic switch unit connected between the final stages of the counter and the most significant address inputs of the memory. The logic switch unit includes a rotary wafer switch which can be manually set to one of twelve positions each corresponding to a unique complete program made up from the sub-programs according to the wiring of the switch.

REFERENCES:
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patent: 3772659 (1973-11-01), DeVries
patent: 3794970 (1974-02-01), Pearson et al.
patent: 3798612 (1974-03-01), Struger et al.
patent: 3810118 (1974-05-01), Kiffmeyer
patent: 3827030 (1974-07-01), Seipp
patent: 3875564 (1975-04-01), Thuruoka et al.

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