PIR精密长波辐射�?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><span>PIR</span><span>长波辐射传感器、精密红外辐射计，即长波辐射计，主要用于单向性测量，分别测量地面长波辐射的收入和支出，通过计算可以得出准确的净长波辐射通量、�span>PIR</span>由一个多结线绕热电堆电路组成，该结构可以抵抗各种强烈的机械震动和打击。传感器的接收器上涂有一屁�span>Parson&</span>＂�span>39;s</span>黑漆（无波长选择吸收）外衣。同时探测器上有温度补偿，温度补偿根据探测器测量辐射光线的方向自动调节，消除信号误差。通过热敏电阻连续感知探测器的温度，精密控制电池电压、�/span></p><p><span>传感器的顶罩采用的是硅树脂材料，可以很好的隔离太阳的长波辐射和白天的短波辐射。这个半球形的顶罩北部表面有一个真空干扰滤波器，保证接收的光谱范围�?span>3.5</span>–�span>50</span>��<span>m</span>、�/span></p><p><span>PIR</span><span>是一个地面长波辐射传感器，主要有两个地球红外辐射，传感器的光谱响应范围在<span>3000</span>–�span>50000nm</span>，覆盖了整个地球和大气的温度跨度。地面长波辐射传感器的工作原理和短波辐射传感器的工作原理相同，都是依靠内部的热电堆进行测量。硅树脂制作的顶罩，对于太阳光波长几乎是不透明的。顶罩上还有一层浅灰色的干扰滤波外衣，不会让波长小亍�span>3000nm</span>的光通过。但是，�?span>4000nm</span>就会急剧的增加。从<span>4000</span>–�span>50000nm</span>，它的传输缓慢下降大�?span>30</span>–�span>40%</span>。但是探测器感知的一个净信号来自多个方面，包括目标物体的散射辐射，仪器外壳的散射辐射，以及顶罩的散射辐射。为了测量出真实的环境热红外辐射，探测器的温度、外壳以及顶罩都需要通过热敏电阻来控制。因为外壳屏蔽来自太阳的辐射，它的温度接近于空气的温度，因此它的温度就可以代表大气散射的温度。但是顶罩没有受到太阳光加热方面的保护，因此在传感器外壳的热散射和顶罩之间的热散射存在一个差值，这个错误的信号必须被去除、�/span></p><p><span>技术参�?/span></p><table cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><tbody><tr><td colspan="2"><p><strong><span>PIR</span></strong><strong><span>精密长波辐射�?span>-</span>技术参�?/span></strong></p></td></tr><tr><td><p><span>灵敏�?/span></p></td><td><p><span>4</span><span>��<span>V/Wm</span>2</span></p></td></tr><tr><td><p><span>阻抗</span></p></td><td><p><span>700</span><span>��</span></p></td></tr><tr><td><p><span>温度依赖</span></p></td><td><p><span>在环境温度范図�span>-20</span>��<span>1%+40</span>ℂ�/span></p></td></tr><tr><td><p><span>线�?/span></p></td><td><p><span>0~700Wm-2</span><span>��<span>1%</span></p></td></tr><tr><td><p><span>响应时间</span></p></td><td><p><span>2</span><span>科�span>(1</span>个信叶�span>)</span></p></td></tr><tr><td><p><span>余弦</span></p></td><td><p><span>毓�span>5%</span>、�/span></p></td></tr><tr><td><p><span>机械振动</span></p></td><td><p><span>测试<span>20g</span>的无破损、�/span></p></td></tr><tr><td><p><span>校准</span></p></td><td><p><span>黑体参耂�/span></p></td></tr><tr><td><p><span>尺寸</span></p></td><td><p><span>直径<span>5.75</span>英寸�?span>5.75</span>英寸高、�/span></p></td></tr><tr><td><p><span>重量</span></p></td><td><p><span>7</span><span>磄�/span></p></td></tr></tbody></table> </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 name="SaveProComments" id="SaveProComments" type="hidden" value="yes" /> <input name="ProductID" id="ProductID" type="hidden" value="242078" /> <input name="ProQuality" id="ProQuality" type="hidden" value="10" /> <input name="ProService" id="ProService" type="hidden" value="10" /> <input name="ProUsability" id="ProUsability" type="hidden" value="10" /> <input name="ProCostperformance" id="ProCostperformance" type="hidden" value="10" /> <div class="yhpl_pf"> <div> <p>产品质量</p> <div><span id="Quality" class="stars star10"></span><span id="Quality_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> <div> <p>售后服务</p> <div><span id="Service" class="stars star10"></span><span id="Service_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> <div> <p>易用�?/p> <div><span id="Usability" class="stars star10"></span><span id="Usability_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> <div> <p>性价毓�/p> <div><span id="Costperformance" class="stars star10"></span><span id="Costperformance_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> </div> <div class="yhpl_pftit">评论内容</div> <textarea name="Comments" id="ProComments" onfocus="checklogin();" placeholder="分享产品使用经验/采购评价（不超过500字）">