Bruel & Kjaer 4938型压力场传声�?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>4938是外部极化的压力场麦克风，用于高级值、高频率的声学测量、�/span></p><p><span><strong>用逓�/strong></span></p><p><span>1、高级值测诔�/span></p><p><span>2、高频声音测诔�/span></p><p><span>3、高温条件下测试</span></p><p><span><strong>基本参数</strong></span></p><table cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><tbody><tr><td colspan="2"><span>型号</span></td><td><span>4938</span></td></tr><tr><td colspan="2"><span>适用亍�/span></td><td><span>压力圹�/span></td></tr><tr><td colspan="2"><span>标准</span></td><td><span>F</span></td></tr><tr><td colspan="2"><span>均压孓�/span></td><td><span>�?/span></td></tr><tr><td><span>直径</td><td><span>英寸</span></td><td><span>1/4</span></td></tr><tr><td><span>标称灵敏度（160Hz（�/span></td><td><span>mV/Pa</span></td><td><span>1.6</span></td></tr><tr><td><span>极化电压</span></td><td><span>V</span></td><td><span>200</span></td></tr><tr><td><span>频率响应�?#177;2dB（�/span></td><td><span>Hz</span></td><td><span>4�?0000</span></td></tr><tr><td><span>本底噪声</span></td><td><span>dB（A（�/span></td><td><span>30</span></td></tr><tr><td><span>电容</span></td><td><span>pF</span></td><td><span>6.1</span></td></tr><tr><td><span>下限频率�?3dB（�/span></td><td><span>Hz</span></td><td><span>0.3�?</span></td></tr><tr><td><span>工作温度范围</span></td><td><span>ℂ�/span></td><td><span>-40�?50</span></td></tr><tr><td><span>温度系数</span></td><td><span>dB/ℂ�/span></td><td><span>+0.003</span></td></tr><tr><td><span>压力系数</span></td><td><span>dB/kPa</span></td><td><span>-0.003</span></td></tr></tbody></table><p><span><strong>传声器标准定么�/strong></span></p><p><span>表格中使用以下标准缩冘�/span></p><table cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><tbody><tr><td></td><td><span>IEC 61094</span></td><td></td><td><span>IEC 61672</span></td><td></td><td><span>ANSI</span></td></tr><tr><td><span>A</span></td><td><span>IEC 61094-4 WS1F</span></td><td><span>I</span></td><td><span>IEC 61672 Class 1</span></td><td><span>K</span></td><td><span>ANSI S1.4 类型1</span></td></tr><tr><td><span>B</span></td><td><span>IEC 61094-4 WS2F</span></td><td><span>J</span></td><td><span>IEC 61672 Class 2</span></td><td><span>L</span></td><td><span>ANSI S1.4 类型2</span></td></tr><tr><td><span>C</span></td><td><span>IEC 61094-4 WS3F</span></td><td></td><td></td><td><span>M</span></td><td><span>ANSI S1.12 类型M</span></td></tr><tr><td><span>D</span></td><td><span>IEC 61094-4 WS1P</span></td><td></td><td></td><td></td><td></td></tr><tr><td><span>E</span></td><td><span>IEC 61094-4 WS2P</span></td><td></td><td></td><td></td><td></td></tr><tr><td><span>F</span></td><td><span>IEC 61094-4 WS3P</span></td><td></td><td></td><td></td><td></td></tr><tr><td><span>G</span></td><td><span>IEC 61094-1 LS1P</span></td><td></td><td></td><td></td><td></td></tr><tr><td><span>H</span></td><td><span>IEC 61094-1 LS2P</span></td><td></td><td></td><td></td><td></td></tr></tbody></table><p><span><strong>产品报价</strong></span></p><p><span>本商铺不提供网上报价，如需产品报价，请直接联系Bruel & Kjaer中国</span></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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