PHOTOIONISATION DETECTOR Russian patent published in 2012 - IPC G01N27/62 

FIELD: instrument making.

SUBSTANCE: photoionisation detector comprises a UV-lamp (1), having a window (2) to release UV-radiation, a through ionisation chamber (8), installed upstream the window (2) to release UV-radiation and an electrode (9), which serves as a polarising electrode, an electrode (10), which serves as a collector electrode. The detector differs by the fact that it is equipped with a heater 18, installed in an ionisation chamber (8) in front of the window 2 to release UV-radiation, besides, the heater is arranged in the form of a layer from an electroconductive material applied onto the surface of a circular ceramic substrate, and installed with a gap at the distance from 0.1 to 2.0 mm from the window.

EFFECT: invention eliminates generation of a water layer on a surface of a window and end parts of electrodes.

4 cl, 2 dwg