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<p>材料局部抵抗硬物压入其表面的能力称为硬度，是衡量材料软硬的指标。LS251D 里氏硬度计依据里氏硬度测量原理检测硬度，可对多种金属材料进行硬度测量。仪器采用先进的数字探头技术，数字信号处理直接在探头上完成，探头不易受到干扰并且提供优良的测试精度。探头内置方向传感器，自动补偿不同冲击方向的测量误差。系统内置多种硬度制式，可在里氏(HL)、维氏(HV)、布氏(HB)、肖氏(HS)、洛氏(HRA)、洛氏(HRB)、洛氏(HRC)和抗拉强度(σb)之间相互转换，避免繁琐的人工计算。</p>
<p>使用LS251D里氏硬度计进行硬度检测的实用价值在于其无可比拟的便携特性——操作简单，携带方便，可实现批量检测。</p>
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                                <h2>适用材料</h2>
                                <span><p>LS251D里氏硬度计适用材料有钢、铸钢、合金工具钢、不锈钢、灰铸铁、球墨铸铁、铸铝合金、铜锌合金、铜锡合金、纯铜和锻钢等金属材料，仪器可广泛应用于机床导轨，汽车底盘、重型工件、模具型腔、轴承、压力容器及已安装的机械或组装部件等材料的硬度测试，能够帮助厂家进行产品质量检验、合理工艺和产品质量分析。</p></span>

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                                                <img src="http://www.lstek.cn/upload/product191225/251d22090202.jpg" alt="LS251D里氏硬度计可测试的材料" title="LS251D里氏硬度计可测试的材料"/>
                                              <figcaption>LS251D里氏硬度计可测试的材料</figcaption>
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                                  <h2>仪器参数</h2>
                                <div class="table-layout">
                  <table>
                    <thead>                      <tr>
                                            <th>参数名</th>
                                            <th>参数值</th>
                                            </tr>
                    </thead>                      <tr>
                                            <td>探头类型</td>
                                            <td>D型冲击装置</td>
                                            </tr>
                                          <tr>
                                            <td>硬度制</td>
                                            <td>HL、HV、HB、HS、HRA、HRB、HRC</td>
                                            </tr>
                                          <tr>
                                            <td>测量范围</td>
                                            <td>HLD(170-960); HV(83-976); HB(30-651); HRC(17.6-68.5);<br/>HS(26.4-99.5); HRB(13.5-100); HRA(60-85.8)</td>
                                            </tr>
                                          <tr>
                                            <td>分辨率</td>
                                            <td>1HL</td>
                                            </tr>
                                          <tr>
                                            <td>测量精度</td>
                                            <td>±12 HL，±6HL 典型的</td>
                                            </tr>
                                          <tr>
                                            <td>重复性</td>
                                            <td>6HL</td>
                                            </tr>
                                          <tr>
                                            <td>显示屏</td>
                                            <td>240×160点阵LCD</td>
                                            </tr>
                                          <tr>
                                            <td>供电方式</td>
                                            <td>2节AA碱性干电池</td>
                                            </tr>
                                          <tr>
                                            <td>主机尺寸</td>
                                            <td>142*72*28 mm</td>
                                            </tr>
                                          <tr>
                                            <td>探头尺寸</td>
                                            <td>148*31*25 mm</td>
                                            </tr>
                                          <tr>
                                            <td>重量</td>
                                            <td>270g</td>
                                            </tr>
                                          <tr>
                                            <td>工作温度范围</td>
                                            <td>-10~50℃，0~85%RH（无凝露）</td>
                                            </tr>
                                          <tr>
                                            <td>存储温度范围</td>
                                            <td>-10~60℃，0~85%RH（无凝露）</td>
                                            </tr>
                                      </table>
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                                    <figcaption>
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                                        <img src="http://www.lstek.cn/upload/product191225/251d22090204.jpg" alt="LS251D探头展示" title="LS251D探头展示"/>
                                    <figcaption>
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                                <h2>仪器特点</h2>
                                <span><p>1.采用先进的数字探头技术，数字信号处理直接在探头上完成，探头不易受到干扰并且提供优良的测试精度。</p></span>

                                    <figure class="col-xs-12 p-0 position-bottom" >
                                                <img src="http://www.lstek.cn/upload/product191225/251d22090205.jpg" alt="里氏硬度计数字探头" title="里氏硬度计数字探头"/>
                                              <figcaption>里氏硬度计数字探头</figcaption>
                                          </figure>
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                                <span><p>2.仪器可在360°各个角度进行测量，探头内置方向传感器，能够自动补偿不同冲击方向的测量误差，多角度测量轻松无忧。</p></span>

                                    <figure class="col-xs-12 p-0 position-bottom" >
                                                <img src="http://www.lstek.cn/upload/product191225/251d22090206.jpg" alt="LS251D里氏硬度计探头" title="LS251D里氏硬度计探头"/>
                                              <figcaption>LS251D里氏硬度计探头</figcaption>
                                          </figure>
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                                <span><p>3.仪器内置多种硬度制式，可在里氏(HL)、维氏(HV)、布氏(HB)、肖氏(HS)、洛氏(HRA)、洛氏(HRB)、洛氏(HRC)，用户可直接在仪器内部选择想要转换的硬度制式，免去人工查表的繁琐步骤。此外，LS251D不仅能测试硬度，还能测试材料强度，功能更丰富。</p></span>

                                    <figure class="col-xs-12 p-0 position-bottom" >
                                                <img src="http://www.lstek.cn/upload/product191225/251d22090207.jpg" alt="LS251D的硬度制式" title="LS251D的硬度制式"/>
                                              <figcaption>LS251D的硬度制式</figcaption>
                                          </figure>
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                                <span><p>4.仪器测量精度可达到±6HL，测试准确，能够确保通过国家权威计量院检测。</p></span>

                                    <figure class="col-xs-12 p-0 position-bottom" >
                                                <img src="http://www.lstek.cn/upload/product191225/251d22090208.jpg" alt="LS251D计量证书" title="LS251D计量证书"/>
                                              <figcaption>LS251D计量证书</figcaption>
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                                <span><p>5.仪器可预设硬度值的上下限，根据上下限判断来料是否合格，方便用于批量测试。</p></span>

                                    <figure class="col-xs-12 p-0 position-bottom" >
                                                <img src="http://www.lstek.cn/upload/product191225/251d22090209.jpg" alt="LS251D测试铸钢材料" title="LS251D测试铸钢材料"/>
                                              <figcaption>LS251D测试铸钢材料</figcaption>
                                          </figure>
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                                <span><p>6.仪器具有统计模式，能够自动统计最近测试的9个测量值的最大值、最小值和平均值。</p></span>

                                    <figure class="col-xs-12 p-0 position-bottom" >
                                                <img src="http://www.lstek.cn/upload/product191225/251d22090210.jpg" alt="LS251D自动统计测试的数据" title="LS251D自动统计测试的数据"/>
                                              <figcaption>LS251D自动统计测试的数据</figcaption>
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                                <span><p>7.用户可自行校准仪器, 通过对标准件进行校准，可减少测量误差。</p></span>

                                    <figure class="col-xs-12 p-0 position-bottom" >
                                                <img src="http://www.lstek.cn/upload/product191225/251d22090211.jpg" alt="LS251D测试标准硬度块" title="LS251D测试标准硬度块"/>
                                              <figcaption>LS251D测试标准硬度块</figcaption>
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                                <span>
<p>8.高亮度LCD屏幕，黑暗环境也能清晰读数。</p>
<p>9.仪器超低功耗，2节AA碱性电池，可连续工作100小时以上。</p>
<p>10.配备标准里氏硬度试块，用户后续试块耗材成本节省90%。</p>
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<p>GB/T 13794.4 里氏硬度试验 第4部分:硬度值换算表</p>
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