Oven temperature control

PUT 2, power normalization photomultiplier tube BS, beamsplitter D, detection optical fiber , excitation fiber TC, oven temperature controller for harmonic generation. 

The oven temperature controller for temperature-programming can consist of one of the following ... 

Figure 6.15. Block diagram of digital oven temperature control system (Hewlett-Packard Co.-5700 series chromatographs).

Figure 6.16. Block diagram of processor based oven temperature control system. The processor and most of the digital parts are shared with other temperature zones and with other functions of the gas chromatograph. (Hewlett-Packard Co.—5830/40 series chromatographs ). ...

The FID uses a continuous quartz braid to transport the column effluent (sprayed onto the braid through a 0.1-mm orifice) through a solvent removal zone and into the analytical and cleaning flames. The FID flows were as follows 140 ml/min H2 and 400 ml/min air for the analytical flame 300 ml/min H2 and 150 ml/min 02 for the cleaning flame. The oven temperature control was set to slightly less than mid-range, which yields a block temperature of approximately 140°C. 

A capillary column, 30 m or longer, with a thick film of stationary phase, offers an alternative to cryogenic oven temperature control for solute-focusing purposes, which is especially attractive with auxiliary sample introduction techniques of purge and trap and thermal desorption. 

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