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JX YDD—B型音频大地电场仪

2018/7/29 20:37:25发布79次查看
加工定制类型大地电场仪
品牌吉祥型号JX YDD—B型音频大地电场仪
分辨率1μV外形尺寸21×23×9cmmm
电源★12节5号电池连成+9V、-9V双电源供电

 由于山区地形、地质构造及水文地质条件都很复杂,地下水分布又很不均匀,要求井位的选择必须以充分的地质和物探方面资料为依据,原有的常规物探方法,不能满足需要,在此向大家介绍一种基于“音频大地电场法”的ydd—b型音频大地电场仪。
该仪器对基岩中的低电阻的富水构造带的反映很灵敏,它能较准确提供富水带的位置(特别是地形影响较小),这是直流电阻率法所不能及的。20多年来,在国内外一些地形复杂的山区应用该仪器找水定井取得满意效果。
ydd—b型音频大地电场仪主要应用范围:
★ 山区找水定井。
★ 构造断裂勘探。(探测断层破碎带、暗河、溶洞及某些不同岩性的接触带)
★ 岩性界面划分、岩脉探测、裂缝探测。
★ 岩溶勘测、矿床勘测。
★ 地质灾害勘测(隐伏溶洞、岩溶塌陷、隐伏裂缝及断层等)。
ydd—b型音频大地电场仪功能和特点:
★ 本机设有<500hz、>500hz、17.4khz、22.3khz选频档和宽带档共五个档位,同时宽带档设有50hz陷波与不陷波,可在同一测量点上,得到6个不同频段的读数,对判断观测曲线的异常性质提供了不同的参考资料。
★ 本机设有工频抑制功能,选择宽带档                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            工作时,当工频信号不稳定,对读数干扰较大时,可接通工频陷波器,工频稳定,可关断陷波器。
★ 设有v+,v-电源检查,当指示电池电压低于7v时,需要换电池。
★ 本机设有溢出指示功能,观测信号超过量程时,首位显示“1”其余位无字,这时请增大一个测量档次。
★ 读数直观,每秒一次连续显示,能观察天然电场动态变化过程。
★ 配有检查仪器的ydd微型信号发生器,用于现场检查ydd仪器工作是否正常及连接导线的通断。
★ 仪器轻便,操作简单,整机功耗低,选用易购的5#电池供电,成本低,使用方便。
★ 本机全部采用国际上***新高中档大规模ic集成电路,如高精度a/d片、低功耗的四运放等,加以精心研制,所以整机原器件少,功能强,工作稳定可靠。
ydd—b型音频大地电场仪主要技术指标
★ 交流音频电压测量范围:0——2000mv (分四挡:0—2mv、0—20mv、0—200mv、0—2000mv)
★ 交流音频电压测量精度:< ±5%
★ 分辨率:1μv
★ 频率响应范围:宽带挡20hz——25khz
★ 陷波器对工频50hz抑制能力:> 40db
★ 选频档选频品质因数:> 30db
★ 频率响应附加误差:< ±5%
★ 档间误差:< ±5%(1000hz测量)
★ 输入阻抗:> 3m
★ 测量采样时间:1秒
★ 显示方式:3位半液晶显示
★ 供电:12节5号电池连成+9v、-9v双电源供电
★ 整机功耗:157mw
★ 外形尺寸及重量:21×23×9cm(长×宽×高)、1.5kg

北京吉祥天地科技有限公司
宗女士
15910603088
北京 海淀区 杏石口路65号益园文化创意基地c座6号楼407室
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