Gas Chromatography Detectors - Early Gas Chromatography Detectors > The Emissivity Detector > Page 27

 

A, draught proof Sindanyo top. B, double layer of 40 mesh copper gauze. C, Sindanyo front for photo-cell mounting. D, metal stops for draught top,. E, selenium photo-cell. F, glass condensing lens. G, column inlet. H, column. I, column heating jacket. J, supports for reflector. L, metal reflector. M, stainless steel jet. N, 2 cm deep layer of porcelain beads. O, coal gas inlet. P, air inlet.

Figure 10 The Emissivity Detector

 

It did not prove particularly popular at the time, but in recent years the concept has been revived and commercial detectors based on the emissivity concept of Grant are now available. The original detector was very simple in design and the original diagram of the device is shown in figure 10.