京都电子RA-620高精度数字式折光�?参数-价格-中国粉体罐�/title>

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$(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <p><strong><span>RA-620高精度数字式折光�?糖度讠�/p><p>Refractometer / Brix Meter</span></strong></p><p>术语和定么�</p><p>光线自一种透明介质进入另一种透明介质时，产生折光现象，这种现象是由于光线在各种不同的介质中进行的速度不同造成的。折光率系指光线在空气中传播的速度与在其它物质中传播速度之比值、�/p><p>折光率refractive index</p><p>在钠光谱D线�?0��C的条件下，空气中的光速与被测物中的光速的比值或光自空气通过被测物时的入射角的正弦与折射角的正弦的比值、�/p><p>方法原理:</p><p>当光从折光率为n被测物质进入折光率为N的棱镜时，入射角为i，折射角为r，则:</p><p>Sin i / Sin r = N / n�?1)</p><p>在折射仪中，入射角i= 90��，代入式(1)徖�</p><p>1 / Sin r = N / n</p><p>n = N �� Sin r�?2)</p><p>棱镜的折光率N为已知值，则通过测量折射角r，即可求出被测物质的折光率n、�/p><p><strong>RA-620高精度数字式折光�?糖度� 标准方法:</strong></p><p>SH/T 0724-2002 液体烃的折射率和折射色散测定泔�/p><p>SH/T 0205-1992 电气绝缘液体的折射率和比色散测定泔�/p><p>GB/T 6488-2008 液体化工产品 折光率的测定(20��C)</p><p>GB/T 614-2006 化学试剂 折光率测定通用方法</p><p>ASTM D1218-12(2016) Standard Test Method for Refractive Index and Refractive Dispersion of Hydrocarbon Liquids(液态烃的折射率和折射分散度的测试方�?</p><p>ASTM D1807-00(2005)e1 Standard Test Methods for Refractive Index and Specific Optical Dispersion of Electrical Insulating Liquids(电绝缘液体折射指数和比光散度的试验方�?</p><p>ASTM D5006-11(2016) Standard Test Method for Measurement of Fuel System Icing Inhibitors (Ether Type) in Aviation Fuels(测量航空燃料中燃料系统结冰抑制剂(醚型)的试验方�?</p><p>ASTM D1569� ASTM D1992� ASTM D2140� ASTM D4056� ASTM D4095� ICUMSA:GS 4/3-13� OIML:R 124 </p><p>ISO 1743:1982 Glucose syrup - Determination of dry matter content - Refractive index method(葡萄糖浆固体物质的含量测定折光率�?</p><p><strong>RA-620高精度数字式折光�?糖度� 主要特点９�/strong></p><p>1. 全自动折光仪具触摸式液晶屏，同时显示折光率、糖度、浓度、�/p><p>2. 内置帕尔贴自动恒温控制，外形轻巧，操作容易，测定速度快、�/p><p>3. 使用高亮度LED光源使用寿命长，测量棱镜为蓝宝石材质耐磨损、�/p><p>4. 全自动折光仪，符合GLP规范，存储测量结果、检查和校正纪录、�/p><p>5. 输入折光率和温度对照表或多项式，自动补偿至需求温度折光率、�/p><p>6. 内置糖度换算表。可输入折光率和浓度对照表或多项式换算浓度、�/p><p>7. 标配样品防挥发盖板，可防止易挥发性的样品造成检测时的影响、�/p><p>8. 外接数字式密度计和多样品自动进样器，同时测量密度和折光率、�/p><p>9. 中文的界面，简易直观的操作，高精度的测定结果和超高性价比、�/p><p><strong>RA-620高精度数字式折光�?糖度� 技术参数：</strong></p><p>测定方式: 光折射臨界角检出方式、�/p><p>光源: LED钠光谱D�?589.3nm)、�/p><p>测量范围: 折光玆� 1.32000�?.58000nD� 白利糖度(Brix): 0.00�?00.00%(ICUMSA1974)、�/p><p>准确�? 折光玆� ��0.00002nD，白利糖�?Brix): ��0.014%(<span>0�?5%)</span>、�/p><p>重复�? 折光玆� ��0.00001nD，白利糖�?Brix): <span>��0.007%(<5%)�?#177;0.01%(�?%)、�/span></p><p>分辨玆� 折光玆� 0.00001nD，白利糖�?Brix): <span>0.001%(<5%)�?.01%(�?%)、�/span></p><p>温度控制范围: 5�?5��C，内置帕尔贴控温装置、�/p><p>温度分辨玆� 0.01��C、�/p><p>*小样品量: 0.2mL、�/p><p>接触样品材质: 蓝宝石棱镜，不锈钢SUS316样品台、�/p><p>显示: 4.7寸彩色背光液晶显示器、�/p><p>控制方式: 触摸屏控制方式、�/p><p>触摸屎� 中文、英文或日文操作系统、�/p><p>数据存储: 测量方法: 100组，测量结果: 300组，校正/检查记彔� 20组、�/p><p>外部存储: U盘存储、�/p><p>温度补偿: 可输入温度换算表或转换系数，执行温度补偿、�/p><p>浓度换算: 可输�?00组折光率和浓度换算表或输入换算系数，执行浓度换算、�/p><p>浓度转换: 内置可溶性固形物含量(Brix)和果葡糖�?HFCS42/55/90)转换表、�/p><p>界面: LAN，USB，RS-232C、�/p><p>电源: AC100�?40V�?0/60HZ� 20W。或外接充电电池、�/p><p>尺寸: 191(W)x281(D)x161(H)mm、�/p><p>重量: �?公斤、�/span></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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