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$(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <p>PHSJ-4A型PH讠�/p><p>1 概述</p><p> PHSJ�?A型实验室pH 计是一台智能型的实验室常规分析测量器，它适用于医药、环保、高等院校和科研单位的化验室测量水溶液中pH值，也可用于测量各种离子选择电极的电极电位和溶液温度、�/p><p>仪器特点９�/p><p>� 仪器采用微处理器技术，使仪器具有自动温度补偿、自动校准、自动计算电极的百分理论斜率等功能。同时，仪器也可以进行手动温度补偿。仪器具有断电保护功能在仪器使用完毕后关机或非正常断电情况下，仪器内部贮存的测量数据和设置的参数不会丢失、�/p><p>� 仪器对测量结果可以贮存、删除、查阅、打印。仪�?多可贮存100�?nbsp; pH或mV测量的实验数据、�/p><p>� �?0.0�?0.0)℃温度范围内，用户可选择三种pH缓冲溶液对仪器进行一 点或二点标定。用户通过调节等电位点，可以测量纯水、超纯水和锅炉水的pH值，这样，仪器可以广泛地满足用户的需求、�/p><p>� 仪器带有RS�?32接口，可接TP�?6型打印机打印测量结果或与计算机通讯、�/p><p>●仪器配置了多功能电极支架使操作更方便、�/p><p>2 仪器主要技术性能</p><p>2.1 测量范围 pH�?0.000�?4.000)pH</p><p> mV�?�?999.9�?999.9)mV</p><p> 温度�?-5.0�?05.0)ℂ�/p><p>2.2 分辨率： pH�?.001</p><p> mV�?.1mV</p><p> 温度�?.1ℂ�/p><p>2.3 电子单元基本误差９�/p><p> pH：0.005pH：�/p><p> mV：�?.2mV（�?99.9mV范围内）� ±0.03%FS（其它范围）：�/p><p> 温度：0.3ℂ�/p><p>2.4 仪器基本误差９�/p><p> pH：0.01pH�?个字：�/p><p> 温度：0.5℃1个字�?℃≤T�?0.0℃）</p><p> �?.0℃1个字（在其它范围（�/p><p>2.5电子单元重复性：pH：不大于0.001pH</p><p> mV：不大于0.1mV</p><p> 温度：不大于0.2ℂ�/p><p>2.6电子单元稳定性：�?.005pH�?个字/3h</p><p>2.7 标定方式：一点或二点自动标定</p><p>2.8 仪器正常工作条件</p><p> 环境温度� (15�?5)ℂ�/p><p> 相对湿度� 不大�?5＄�/p><p> 供电电源：直流通用电源(+9V�?15V�?00mA，内正，外负)：�/p><p> 除地磁场外，周围无电磁场干扰</p><p>2.9 外形尺寸(mm)�?00×210×70 (长×宽×髗�/p><p><br/></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 name="SaveProComments" id="SaveProComments" type="hidden" value="yes" /> <input name="ProductID" id="ProductID" type="hidden" value="358405" /> <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）">