,"attribs":{"0":"*0+j" ,"apool":{"numToAttrib":{"0":["author","2279713557988907"] ,"nextNum":1 ,"align":"left" ,"MoX4fFJzodr46bcVSkec89GEnTb":{"id":"MoX4fFJzodr46bcVSkec89GEnTb","snapshot":{"type":"text","parent_id":"UaFLf5GvSd7sOucrJuqcq7Jznec","comments":[],"revisions":[],"locked":false,"hidden":false,"author":"2279713557988907","children":[],"text":{"initialAttributedTexts":{"text":{"0":"骑码是密度天平校验的核心专用砝码，主要用于调节天平横梁平衡，精准测量液体相对密度，广泛应用于医疗、化工、科研等部门的实验室，其精度与操作规范性直接影响密度测量数据的准确性。密度天平校验用骑码不同于常规砝码，其体积小、精度高，可在天平横梁槽口上灵活移动，通过微调实现横梁平衡，适配密度天平的高精度测量需求。" ,"attribs":{"0":"*0+48" ,"apool":{"numToAttrib":{"0":["author","2279713557988907"] ,"nextNum":1 ,"align":"left" ,"PuTWfYo2pdvv7Ac6B4XcSvGrnwh":{"id":"PuTWfYo2pdvv7Ac6B4XcSvGrnwh","snapshot":{"type":"text","parent_id":"UaFLf5GvSd7sOucrJuqcq7Jznec","comments":[],"revisions":[],"locked":false,"hidden":false,"author":"2279713557988907","children":[],"text":{"initialAttributedTexts":{"text":{"0":"骑码的工作原理基于阿基米德定律与杠杆原理的结合。密度天平通过测锤浸没于液体中获得浮力，使横梁失去平衡，此时将骑码放置并移动于横梁的V形槽口上，利用骑码的质量补偿浮力带来的偏差，使横梁恢复平衡，进而根据骑码的位置与质量，精准计算出液体的相对密度值。横梁上均匀分布10个V形凹槽，专门用于放置各类骑码，相邻槽口之间的相对密度差值为天平的分度值，通常1分度相当于0.0001（相对密度值）。" ,"attribs":{"0":"*0+5c" ,"apool":{"numToAttrib":{"0":["author","2279713557988907"] ,"nextNum":1 ,"align":"left" ,"CdaKfx5RndDQnTccn6pc2LasnTe":{"id":"CdaKfx5RndDQnTccn6pc2LasnTe","snapshot":{"type":"text","parent_id":"UaFLf5GvSd7sOucrJuqcq7Jznec","comments":[],"revisions":[],"locked":false,"hidden":false,"author":"2279713557988907","children":[],"text":{"initialAttributedTexts":{"text":{"0":"密度天平校验用骑码的规格与精度有严格标准，根据JJF 171-2016《液体相对密度天平》检定规程，常见规格包括5g、500mg、50mg、5mg等，不同规格骑码的质量允差不同，如5g骑码允差不超过±0.5mg，5mg骑码允差不超过±0.06mg，确保校准精度。骑码的刃部需光滑成弧形，其夹角不得大于横梁分度槽夹角的2/3，且无不规则弯曲，避免移动时卡顿或影响平衡精度。" ,"attribs":{"0":"*0+55" ,"apool":{"numToAttrib":{"0":["author","2279713557988907"] ,"nextNum":1 ,"align":"left" ,"SQjAfQbkXddYCEc3y6mcioihnsd":{"id":"SQjAfQbkXddYCEc3y6mcioihnsd","snapshot":{"type":"text","parent_id":"UaFLf5GvSd7sOucrJuqcq7Jznec","comments":[],"revisions":[],"locked":false,"hidden":false,"author":"2279713557988907","children":[],"text":{"initialAttributedTexts":{"text":{"0":"材质选择上，骑码通常采用高纯度不锈钢或铜合金制成，材质均匀稳定，密度一致，无磁性，避免磁性干扰天平测量精度。表面经过精密加工与抛光处理，光滑平整，无毛刺、砂眼等缺陷，减少与横梁槽口的摩擦，便于灵活移动，同时提升材质的耐磨性与耐腐蚀性，延长使用寿命。骑码上标注清晰的质量值，便于识别与选用，部分高精度骑码还标注有校准编号，便于追溯。" ,"attribs":{"0":"*0+4l" ,"apool":{"numToAttrib":{"0":["author","2279713557988907"] ,"nextNum":1 ,"align":"left" ,"EUw2fpuL7ddxGTcRxn1c3yavnJk":{"id":"EUw2fpuL7ddxGTcRxn1c3yavnJk","snapshot":{"type":"text","parent_id":"UaFLf5GvSd7sOucrJuqcq7Jznec","comments":[],"revisions":[],"locked":false,"hidden":false,"author":"2279713557988907","children":[],"text":{"initialAttributedTexts":{"text":{"0":"操作规范是确保骑码校验精度的关键，需遵循标准化流程。首先，校验前需将密度天平置于水平、无振动、无气流的环境中，温度控制在20±5℃，相对湿度不大于80%，检查天平横梁、测锤、悬丝等部件是否完好，确保悬丝无断裂、测锤无损伤。随后，将测锤浸没于蒸馏水中，调整天平平衡，再根据测量需求，选用合适规格的骑码，轻轻放置于横梁槽口上，缓慢移动骑码，直至横梁恢复平衡。" ,"attribs":{"0":"*0+4x" ,"apool":{"numToAttrib":{"0":["author","2279713557988907"] ,"nextNum":1 ,"align":"left" ,"EKstfdYknd3nYWchW3pcCPNsnaf":{"id":"EKstfdYknd3nYWchW3pcCPNsnaf","snapshot":{"type":"text","parent_id":"UaFLf5GvSd7sOucrJuqcq7Jznec","comments":[],"revisions":[],"locked":false,"hidden":false,"author":"2279713557988907","children":[],"text":{"initialAttributedTexts":{"text":{"0":"操作过程中需注意细节，避免影响测量精度。拿取骑码时需使用专用镊子，禁止直接用手触摸，防止手上的汗液、污渍污染骑码，导致质量偏差；放置与移动骑码时动作要轻柔，避免撞击横梁或槽口，防止骑码变形或横梁损坏；每次移动骑码后，需静置片刻，待天平稳定后再读取数据，避免因振动导致数据偏差。" ,"attribs":{"0":"*0+3u" ,"apool":{"numToAttrib":{"0":["author","2279713557988907"] ,"nextNum":1 ,"align":"left" ,"LfMMfgU4wdeurycTMzOcNF8xnkd":{"id":"LfMMfgU4wdeurycTMzOcNF8xnkd","snapshot":{"type":"text","parent_id":"UaFLf5GvSd7sOucrJuqcq7Jznec","comments":[],"revisions":[],"locked":false,"hidden":false,"author":"2279713557988907","children":[],"text":{"initialAttributedTexts":{"text":{"0":"日常维护与校准是延长骑码使用寿命、保障精度的核心。清洁时用无尘布蘸取少量酒精轻轻擦拭骑码表面，去除灰尘与污渍，避免使用硬物刮擦，防止表面损伤。存放时将骑码置于专用包装盒内，分类放置，避免与其他砝码或硬物碰撞，存放环境需干燥、无尘、无腐蚀性气体，防止材质生锈或老化。" ,"attribs":{"0":"*0+3o" ,"apool":{"numToAttrib":{"0":["author","2279713557988907"] ,"nextNum":1 ,"align":"left" ,"ICSdfpQACdEiMGc0fcicMAMqn7d":{"id":"ICSdfpQACdEiMGc0fcicMAMqn7d","snapshot":{"type":"text","parent_id":"UaFLf5GvSd7sOucrJuqcq7Jznec","comments":[],"revisions":[],"locked":false,"hidden":false,"author":"2279713557988907","children":[],"text":{"initialAttributedTexts":{"text":{"0":"骑码的校准需定期进行，<a class=" style="color:red" jjf="" data-lark-record-format="docx/record" class="lark-record-clipboard">

密度天平校验骑码工作原理及标准操作规范