CS248273B1 - Contactless temperature measuring device - Google Patents

Abstract

An apparatus for the contactless measurement of temperature comprising a blackened cavity formed by a metallic tube (2) which is enclosed within a pyrometer housing (1) with an air cushion (12) therebetween. The tube (2) is connected to the housing (1) by a means which serves to thermally isolate the cavity from the housing. This means can be, for example, a region (5) of thinner cross section or a region of thermal insulation material between the tube and the housing. A slot (6) extends into the tube and contains a reflecting chopper (7). One end of the tube (2) contains a detector (4). Disposed opposite the detector (4) is an infrared optical system such as a lens (3). A temperature sensor (8) is arranged in the cavity in good thermal contact therewith. <IMAGE>

Description

1

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Claims (1)

248 273 PBB DM ST VINA LEZU A device for non-contact measurement of modulation temperature, characterized in that there is an air cushion (12) between the pyrometer body (1) and the cavity (2) and has instead of a pyrometer body (1) and a cavity (2) a reduced cross-section (5) in the form of a groove at the closest connection point, wherein a thermally insulating material (11) is provided between the pyrometer body (1) and the cavity (2), and a baffle (6) is accommodated in the cavity (2) to accommodate the reflective with the vibration transducer (7) and partially covering the cavity (2), and from the side of the pyrometer body (1), the objective holder (10) extends rigidly with the cavity (2) having the optical system (3) for infrared light; wherein a detector (4) is mounted on the opposite side of the lens (10), preferably a lithium niobate pyroelectric detector, enclosing a cavity (2) provided with screens (9) and on the detector side (4) being in good thermal contact with the cavity sensor (2) temperature (8).