| 摘要 |
<p>The invention relates to measuring engineering. The inventive measuring cell for a sodium analyser comprises three flow-type chambers (1, 3, 5) which are connected in series. A temperature sensor (2) is mounted in the chamber (1) which is first in the medium flow direction, an indicator electrode (4) is placed in the second chamber (3) and a reference electrode (6) is placed in the third chamber (5). The first chamber (1) is provided with two input channels (7, 8) used for coupling it with testable medium and alkalising reagent sources, respectively. The chamber (1) is divided by a horizontal baffle (9), which is provided with a central hole (10), into two parts, wherein the top part is provided with the temperature sensor (2) placed therein and with the input channels (7, 8) which are embodied therein. A conductibility sensor (11) is arranged in the lower part of the chamber. The input channel (7) which is coupled to the medium is positioned near the top level of the top part of the chamber (1) when it is filled with a fluid, wherein the axis of the channel (7) is oriented tangentially to the wall of the chamber (1). The output section of the second input channel (8) is located above the horizontal baffle (9) below the output section of the first input channel (7). Said invention makes it possible to reduce response of measurements, to increase the accuracy and stability thereof.</p> |
