AvaSpec-2048L TEC热电制冷光谱�?参数-价格-中国粉体罐�/title>

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<p><span>一般来说，长积分时间会带来更大的暗噪声、�/span><span>Avantes</span><span>公司的热电制冷型＇�/span><span>TEC</span><span>）光谱仪对探测器制冷，因而有效地解决了这个问题。这款光谱仪采用三级制冷，可以使探测器保持在工作温度</span><span>5</span><span>℃（��</span><span>T</span><span>为比环境温度位�/span><span>35</span><span>℃）、�span>对探测器制冷可以提供非常低而且稳定的暗背景基线咋�/span><span>光子响应度非均匀性（</span><span>PRNU</span><span>）水平，暗噪声可降低</span><span>2-3</span><span>倍，使得</span><span>AvaSpec-ULS2048LTEC</span><span>光谱仪可用于极弱光测量，如荧光和拉曼测量。如果需要，积分时间可以超过</span><span>5</span><span>秒、�/span></p><p><span>AvaSpec-ULS2048LTEC</span><span>光谱仪具有集成式温度调节器�?/span><span>USB2</span><span>高速接口和</span><span>2</span><span>个为帕尔贴制冷单元散热片以及内部电源降温通风的风扇，电源也集成在机箱内、�span>AvaSpec-ULS2048LTEC</span><span>光谱仪可长期稳定�?/span><span>5</span><span>ℂ�/span><span>工作温度、�/span></p><p><strong><span>技术参�?/span></strong></p><table cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><tbody><tr><td><p><strong><span>光学平台</span></strong></p></td><td><p><span>对称</span><span>Czerny-Turner</span><span>，焦�?5 mm</span></p></td></tr><tr><td><p><strong><span>波长范围</span></strong></p></td><td><p><span>200 � 1100nm</span></p></td></tr><tr><td><p><strong><span>分辨率（</span></strong><span>FWHM</span><strong><span>（�/span></strong></p></td><td><p><span>0.06 �?0 nm，与配置有关（见下表（�/span></p></td></tr><tr><td><p><strong><span>灵敏�?/span></strong></p></td><td><p><span>4</span><span>70�?00（单位：计数/微瓦每毫秒积分时间）</span></p></td></tr><tr><td><p><strong><span>探测�?/span></strong></p></td><td><p><span>2</span><span>048像素CCD线列像素</span></p></td></tr><tr><td><p><strong><span>CCD</span></strong><strong><span>制冷温度</span></strong></p></td><td><p><span>比环境温度低</span><span>D</span><span>T = -35 ��C</span></p></td></tr><tr><td><p><strong><span>3 </span></strong><strong><span>级帕尔贴制冷内部供电＇�/span></strong><strong><span>��T=-35</span></strong><span>��<strong>C</strong></span><strong><span>（�/span></strong></p></td><td><p><span>5</span><span>VDC� 3.0A</span></p></td></tr><tr><td><p><strong><span>信噪毓�/span></strong></p></td><td><p><span>300:1</span></p></td></tr><tr><td><p><strong><span>积分时间</span></strong></p></td><td><p><span>1.11ms�?0分钟</span></p></td></tr><tr><td><p><strong><span>接口</span></strong></p></td><td><p><span>USB 2.0高速，480 Mbps </p><p> RS-232�?15.200 bps</span></p></td></tr><tr><td><p><strong><span>I/O</span></strong><strong><span>接口</span></strong></p></td><td><p><span>HD-26连接器，2个模拟输入，2个模拟输出，3个数字输入，12个数字输出，触发，同�?/span></p></td></tr><tr><td><p><strong><span>外型尺寸</span></strong><strong><span>/</span></strong><strong><span>重量</span></strong></p></td><td><p><span>250x 179 x 144mm� 3.6kg</span></p></td></tr></tbody></table><p><strong><span>AvaSpec-ULS2048LTEC光谱仪分辨率�?FWHM)</span></strong></p><table cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><tbody><tr><td colspan="7"><p><span>狭缝宽度</span><span> (��m)</span></p></td></tr><tr><td><p><span>光栅线对�?/span><span> (</span><span>纾�/span><span>/mm)</span></p></td><td><p><span>10</span></p></td><td><p><span>25</span></p></td><td><p><span>50 </span></p></td><td><p><span>100</span></p></td><td><p><span>200</span></p></td><td><p><span>500</span></p></td></tr><tr><td><p><span>300</span></p></td><td><p><span>1.0</span></p></td><td><p><span>1.4</span></p></td><td><p><span>2.5</span></p></td><td><p><span>4.8</span></p></td><td><p><span>9.2</span></p></td><td><p><span>21.3</span></p></td></tr><tr><td><p><span>600</span></p></td><td><p><span>0.40-0.53*</span></p></td><td><p><span>0.7</span></p></td><td><p><span>1.2</span></p></td><td><p><span>2.4</span></p></td><td><p><span>4.6</span></p></td><td><p><span>10.8</span></p></td></tr><tr><td><p><span>830</span></p></td><td><p><span>0.32</span></p></td><td><p><span>0.48</span></p></td><td><p><span>0.93</span></p></td><td><p><span>1.7</span></p></td><td><p><span>3.4</span></p></td><td><p><span>8.5</span></p></td></tr><tr><td><p><span>1200</span></p></td><td><p><span>0.20-0.28*</span></p></td><td><p><span>0.27-0.38*</span></p></td><td><p><span>0.52-0.66*</span></p></td><td><p><span>1.1</span></p></td><td><p><span>2.3</span></p></td><td><p><span>5.4</span></p></td></tr><tr><td><p><span>1800</span></p></td><td><p><span>0.10-0.18*</span></p></td><td><p><span>0.20-0.29*</span></p></td><td><p><span>0.34-0.42*</span></p></td><td><p><span>0.8</span></p></td><td><p><span>1.6</span></p></td><td><p><span>3.6</span></p></td></tr><tr><td><p><span>2400</span></p></td><td><p><span>0.09-0.13*</span></p></td><td><p><span>0.13-0.17*</span></p></td><td><p><span>0.26-0.34*</span></p></td><td><p><span>0.44-0.64*</span></p></td><td><p><span>1.1</span></p></td><td><p><span>2.7</span></p></td></tr><tr><td><p><span>3600</span></p></td><td><p><span>0.06-0.08*</span></p></td><td><p><span>0.10</span></p></td><td><p><span>0.19</span></p></td><td><p><span>0.4</span></p></td><td><p><span>0.8</span></p></td><td><p><span>1.8</span></p></td></tr></tbody></table><p><i><span>*</span></i><i><span>取决于光栅的起始波长；波长越长，色散越大，分辨率越高、�/span></i></p><p><span>l<span>性能**</span></p><p><span>l<span>热电制冷</span></p><p><span>l<span>可采用长积分时间</span></p><p><span>l<span>适用于弱光测野�/span></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; font-size: 14px; margin: 10px 0 0; line-height: 26px;"> 暂无数据� </p> </div>  <div class="xgfa"> <div class="xgfa_tit"> <div> <span></span>相关方案 </div> </div> <div class="xgfa_box" style="display: block;"><div style="padding:10px;">暂无相关方案、�/div> </div> </div> <script> $(function(){ // 切换 $(".xgfa_tit_ul li").hover(function(){ $(".xgfa_tit_ul li").css({"color":"#4F5862","border-bottom-color":"transparent"}); $(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); var _index = $(this).index(); $(".xgfa_box").css("display","none"); $(".xgfa_box").eq(_index).css("display","block"); }); }); </script>  <div class="xgzl"> <div class="cxd_tit"><span></span>相关资料</div> <div class="xgzl_box"><div style="padding:10px;">暂无数据、�/div> </div> </div>  <div class="yhpl"> <div class="cxd_tit"><span></span>用户评论</div> <form id="FormComments" action="" method="post" onsubmit="return false"> <input 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