| 摘要 |
PURPOSE:To prevent the deterioration in performance of a high sensitivity balance, by partitioning a weighing chamber equipped with an opening and closing door into a first chamber which receives a scale but excludes above mention opening and closing door and the second remaining chamber in an air-tight state. CONSTITUTION:The interior of a weighing chamber 1 is partitioned into a semi- cylindrical main weighing chamber 10 which receives a scale 9 but include no external doors 5a, 5b and the remaining weighing preparatory chamber 11 by a slide type internal door 7 and a slide case 8 capable of receiving said door 7. The internal door 7 is opened and closed along the slide case 8 by moving an attached handle 12 to a predetermined direction and, when it is closed, the interior of the main weighing chamber 10 is held under an airtight state. By this constitution, the deterioration in performance of a high sensitivity balance is prevented. |
