| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electronic balance that can comprise configurations differing in weighing capacity by using common components. <P>SOLUTION: An electronic balance has on a forward end side opposing a movable member 10 of a beam 30 a movable member fixing face that fixes the movable member 10 and a first fulcrum spring fitting face 32 to which one end each of fulcrum springs 61 and 62 are fitted, and on the forward end side of a balance base 40 a second fulcrum spring fitting face 43 to which the other end each of the fulcrum springs 61 and 62 is fitted. The movable member fixing face is disposed closer to the movable member 10 than the first fulcrum spring fitting face 32, and the fulcrum springs 61 and 62 are fixed to the first fulcrum spring fitting face 32 and the second fulcrum spring fitting face 43 via spacers 71 and 72 having different thickness selected from multiple types of spacers. This electronic balance can be set to different weighing capacities by selecting the spacers 71 and 72 having different thickness while commonly using the movable member 10, a Roberval mechanism 21, the beam 30, the balance base 40 and so forth. <P>COPYRIGHT: (C)2013,JPO&INPIT |
