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| --->DC－2020B说明书 |
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| 一、概述 |
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DC－2020B智能型超声波测厚仪，采用微处理器技术，利用超声波测量原理，可以测量金属及其他多 |
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| 种材料的厚度、声速进行测量。 |
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在使用仪器前，请详尽阅读本使用手册，以便了解仪器的功能，掌握仪器的使用方法。 |
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| 二、技术参数 |
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显示方法：128×32 LCD中文点阵液晶显示（带背光） |
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显示位数：四位 |
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测量范围：0.8mm ～
250.0mm （钢中） |
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示值精度： |
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低精度：0.8mm ～ 99.9mm
± 0.1mm |
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100.0mm ～ 250.0mm
≤3‰Hmm |
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高精度：0.8mm ～ 9.99mm
±0.04mm |
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10.00mm ～ 99.99mm
± (1‰+0.04)mm |
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100.0mm ～ 250.0mm
≤3‰Hmm |
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注：H为测量的厚度值 |
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声速范围：1000-9999
m/s |
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测量周期：2次/秒 |
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自动关机时间：90秒 |
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电 源：二节七号（AAA）电池，可连续工作不小于72小时。 |
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使用环境：使用温度：－10℃
～ 40℃ |
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存储温度：－20℃ ～ 70℃ |
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外型尺寸：108×61×25
mm |
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重 量：230g（含电池） |
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可选配件 |
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探 头： |
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名称 |
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型号 |
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测量范围 |
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频率 |
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探头直径 |
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最小管径 |
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普通 |
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PT－12 |
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1.2-200.0 mm |
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5.0MHz |
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12 |
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20 |
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微径 |
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PT－06 |
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0.8-50.0 mm |
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6.5MHz |
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7 |
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16 |
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铸铁 |
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20 |
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ZT－12 |
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2.0-250.0 mm |
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2.5MHz |
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13 |
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亚高温 |
GT－13 |
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3.0-100.0 mm |
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5.0MHz |
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14 |
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30 |
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| 三、测量原理 |
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DC系列智能型超声波测厚仪对厚度的测量是由探头将超声波脉冲透过耦合剂到达被测体，一部分 |
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被物体表面反射，探头接收由被测体底面反射的回波，精确地计算超声波的往返时间，再用数字显示 |
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出来。 |
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