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????height=$this.next().height(); ????$(this).css("height",height); var obj = $(o); var val = obj.text(); if(val == '' || val == null || val == undefined){ $(this).addClass('none'); }else{ $(this).removeClass('none'); } }); $(".proshowParameter table td").each(function?(i,o){ var obj = $(o); var val = obj.text(); if(val == '' || val == null || val == undefined){ $(this).addClass('none'); }else{ $(this).removeClass('none'); } }); } </script> <section class="proshowParameter"> <table style=" margin-bottom:20px;"> <tbody> </tbody> </table> </section><p>ZC2780蜂鳴片測試儀/ZC5520型蜂鳴器測試儀</p><p>ZC2780蜂鳴片測試儀/ZC5520型蜂鳴器測試儀</p><p></p><table border="0" cellpadding="0" cellspacing="0" style="border-collapse:collapse; border-spacing:0px; color:rgb(67, 67, 67); font-family:microsoft yahei,arial; font-size:12px; line-height:18px; margin:0px; padding:0px; width:660px"><tbody><tr><td><span style="color:rgb(0, 117, 194)"><span style="font-size:16px"><strong>簡要介紹</strong></span></span></td><td><span style="color:rgb(0, 117, 194)"><span style="font-size:16px"><strong>技術(shù)指標(biāo)</strong></span></span></td></tr><tr><td><p>　　ZC2780型壓電陶瓷蜂鳴片綜合參數(shù)測試儀是針對壓電陶瓷蜂鳴片分選設(shè)備而專門設(shè)計配套的智能型測試儀器，能直接顯示壓電陶瓷蜂鳴片的等效電阻和諧振頻率數(shù)值。可以同時對等效電阻和諧振頻率進(jìn)行四檔分選。該儀器采用SJ2780-87《壓電陶瓷蜂鳴片總技術(shù)條件》中規(guī)定的恒壓法測試原理，適合于配套在測試設(shè)備上對蜂鳴片進(jìn)行快速的自動測試。<br />　　</p><ul></ul></td><td rowspan="6"><table align="right" border="1" cellpadding="2" cellspacing="1" style="border-collapse:collapse; border-spacing:0px; margin:0px; padding:0px; width:95%"><tbody><tr><td>型號</td><td><p>ZC2780</p></td></tr><tr><td>諧振頻率顯示范圍</td><td><p>0.20kHz-20.00KHz</p></td></tr><tr><td>頻率測量誤差</td><td><p>0.80kHz-20.00KHz，≤±2字</p></td></tr><tr><td>等效電阻顯示范圍</td><td><p>25Ω-2200Ω</p></td></tr><tr><td>電阻測量誤差</td><td><p>50Ω≤Rs≤1200Ω，±1% ±5Ω</p></td></tr><tr><td>測試速度</td><td><p>zui快：60mS/次、快速：100mS/次、中速：120mS/次、慢速：140mS/次、精測：180mS/次</p></td></tr><tr><td>測試方式</td><td><p>手動，自動，外部觸發(fā)</p></td></tr><tr><td>顯示方式</td><td><p>240×128點(diǎn)陣的LCD,中文顯示</p></td></tr><tr><td>接口</td><td><p>PLC,RS232C接口</p></td></tr><tr><td>分選</td><td><p>四檔分選，三檔合格，一檔不合格</p></td></tr><tr><td>其他功能</td><td><p>誤差校正，數(shù)據(jù)掉電保護(hù)</p></td></tr></tbody></table></td></tr><tr><td><p><img alt="" src="http://www.zctek.com.cn/ckfinder/userfiles/images/2015051410371942.jpg" style="height:256px; width:300px" /></p></td></tr><tr><td> </td></tr><tr><td> </td></tr><tr><td> </td></tr><tr><td> </td></tr></tbody></table><table border="0" cellpadding="0" cellspacing="0" style="border-collapse:collapse; border-spacing:0px; color:rgb(67, 67, 67); font-family:microsoft yahei,arial; font-size:12px; line-height:18px; margin:0px; padding:0px; width:660px"><tbody><tr><td><span style="color:rgb(0, 117, 194)"><span style="font-size:16px"><strong>簡要介紹</strong></span></span></td><td><span style="color:rgb(0, 117, 194)"><span style="font-size:16px"><strong>技術(shù)指標(biāo)</strong></span></span></td></tr><tr><td><p>　　ZC5520蜂鳴器測試儀是采用直接數(shù)字合成（DDS）技術(shù)，能產(chǎn)生純正的正弦波信號、可調(diào)節(jié)占空比的方波信號及一組可設(shè)定的順序波信號，可適用于電聲行業(yè)對電聲器件進(jìn)行性能測試。本儀器還可選配AZ8922型聲級計，通過RS-232C接口與儀器相連，對被測電聲器件的聲壓數(shù)據(jù)進(jìn)行分析處理。</p></td><td><table align="right" border="1" cellpadding="2" cellspacing="1" style="border-collapse:collapse; border-spacing:0px; margin:0px; padding:0px; width:95%"><tbody><tr><td>型號</td><td><p>ZC5520</p></td></tr><tr><td>頻率范圍</td><td><p>0.20kHz-20.00KHz，誤差：1%，分辨率：0.1Hz</p></td></tr><tr><td>信號輸出幅度</td><td><p>正弦波：0-15Vrms 方波：0V-12.5Vp-p（單極性）-6.5V-+6.5Vp-p（雙極性）</p></td></tr><tr><td>zui大輸出功率</td><td><p>20W(負(fù)載阻抗8Ω時)</p></td></tr><tr><td>輸出電壓誤差</td><td><p>＜1%</p></td></tr><tr><td>正弦波失真</td><td><p>＜0.2%</p></td></tr><tr><td>方波上升/下降時間</td><td><p>＜100ns</p></td></tr><tr><td>方波占空比</td><td><p>20%-80%連續(xù)可得</p></td></tr></tbody></table></td></tr></tbody></table> </div> <link rel="stylesheet" type="text/css" href="/css/MessageBoard_style.css"> <script language="javascript" src="/skins/Scripts/order.js?v=20210318" type="text/javascript"></script> <a name="order" id="order"></a> <div id="iqaqewgi6e" class="ly_msg" id="ly_msg"> <form method="post" name="form2" id="form2"> <h3>留言框 </h3> <ul> <li> <h4 class="xh">產(chǎn)品：</h4> <div id="iqaqewgi6e" class="msg_ipt1"><input class="textborder" size="30" name="Product" id="Product" value="ZC2780蜂鳴片測試儀/ZC5520型蜂鳴器測試儀" placeholder="請輸入產(chǎn)品名稱" /></div> </li> <li> <h4>您的單位：</h4> <div id="iqaqewgi6e" class="msg_ipt12"><input class="textborder" size="42" 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