Abstract: A radiation detector for a non-dispersive infrared gas analyzer has two detector chambers, which are surrounded by a housing and separated by a separating element permeable to infrared radiation and impermeable to gas and which can be filled with a radiation-absorbing measurement gas. A receiving element, which has a measuring system fastened therein and including a flow- or pressure-sensitive sensor, can be attached to a contact surface on an outer face of the housing. Each detector chamber is pneumatically connected to the measuring system by a channel, which extends in the housing and is open to gas. The housing of the radiation detector is modularly constructed and includes a base element, which encloses the channel, the separating element, and the measuring system fastened in the receiving element, and a first and a second outer element, each of which can be connected to the base element and surrounds a detector chamber.

Abstract: A radiation detector for a non-dispersive infrared gas analyzer has two detector chambers, which are surrounded by a housing and separated by a separating element permeable to infrared radiation and impermeable to gas and which can be filled with a radiation-absorbing measurement gas. A receiving element, which has a measuring system fastened therein and including a flow- or pressure-sensitive sensor, can be attached to a contact surface on an outer face of the housing. Each detector chamber is pneumatically connected to the measuring system by a channel, which extends in the housing and is open to gas. The housing of the radiation detector is modularly constructed and includes a base element, which encloses the channel, the separating element, and the measuring system fastened in the receiving element, and a first and a second outer element, each of. which can be connected to the, base element and surrounds a detector chamber.

Abstract: In a device for inserting and removing the sample from an analysis oven, which has a transport rod (9) carried horizontally and for longitudinal displacement in a guiding member or carrier tube (3) affixed to the apparatus, and a sample holder (33) disposed on one end of the transport rod (9), plus a handle part (36) joined to the transport rod (9), the transport rod (9) is in the form of a shaped rod with a plurality of flats (10 to 13) extending along the rod (9), several roller pairs (21, 22 and 26, 27) mounted in the carrier tube (3) and partially spring loaded and movable transversely of the transport rod (9) lying against these flats (11, 12) or on the rounded portions (46), and holding and guiding the transport rod (9) in a longitudinal movement, on the one hand, and on the other hand permitting a rotatory movement about its longitudinal axis, so that the sample can be dumped from the transport rod (9)when the analysis is completed.