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频率计

频率计

频率计又称为频率计数器,是一种专门对被测信号频率进行测量的电子测量仪器。频率计主要由四个部分构成:时基(T)电路、输入电路、计数显示电路以及控制电路。频率,即是信号周期的倒数,也就是说,信号每单位时间完成周期的个数,一般取一秒为基本单位时间。中文名 频率计 外文名 frequency meter 别 名频率计数器 应 用 电子通讯测量 含 义 对被测信号频率进行测量 学 科 电子工程1测量方法测量频率的方法有很多,按照其工作原理分为无源测频法、比较法、示波器法和计数法等。计数法在实质上属于比较法,其中

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该设备适合于各地、市气象局或相关业务部门用于对降水的观测,可实现降水量的自动测量、通讯、存储。
基本配置:1)室内型采集器;2)翻斗式雨量传感器及配套基础件;3)自动供电系统;4)信号电缆;5)包装及其它。","Price":"","Picture":"2/20180828/636710524958563063292.jpg","PictureDomain":"img50","MarketPrice":"-1","WholesalePrice":"-1","RetailPrice":"-1","PromotionalPrice":"-1","PsOrder":"3509","IndexShow":"0","CompanyLink":"www.tongdcy.com","CompanyName":"北京同德创业科技有限公司","MaxOrder":"3","StandUrl":"/st33894","PgID":"84","CityID":"1","City":"北京市","Year":"9","UserID":"41587","ShowPrice":"0.00","AttType":"0","AttState":"3","AttAddType":"0","UpdateTime":"2019/6/3 15:33:23","IsOnlinePay":"0","ClassID":"5497","BrandPicDomin":"","BrandPicName":"","BrandProperty":"无","PBrandID":"354","HitNumber":"1569","CompanyTypeID":"5","LinkMan":"王汝玄","TelPhone":"17778010018/微信同号","Tag":"全天候雨量站,雨量计,雨量站,雨量筒,全天候雨量站","ClassName":"频率计"},{"rn":"6","Part":"0","ID":"7014668","CompanyID":"48327","Type":"TC-BD-II-118","Name":"闪光融合频率计","Address":"","Descrip":"闪光融合频率计亮点闪烁仪型号:TC-BD-II-118
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型号:DL14-GVT-417B
频率计电力电工仪表
产品特点:
满刻度灵敏度:300μV
频率测量范围:10Hz~1MHz
测量档位:-70dB~+40dB12档","Price":"","Picture":"2/20180822/636705561232277303769.png","PictureDomain":"img50","MarketPrice":"-1","WholesalePrice":"-1","RetailPrice":"-1","PromotionalPrice":"-1","PsOrder":"1432","IndexShow":"0","CompanyLink":"","CompanyName":"北京北信未来电子仪器有限公司","MaxOrder":"1","StandUrl":"/st36306","PgID":"82","CityID":"1","City":"北京市","Year":"9","UserID":"50878","ShowPrice":"0.00","AttType":"0","AttState":"3","AttAddType":"0","UpdateTime":"2018/8/22 17:36:06","IsOnlinePay":"0","ClassID":"5497","BrandPicDomin":"","BrandPicName":"","BrandProperty":"无","PBrandID":"354","HitNumber":"708","CompanyTypeID":"3","LinkMan":"刘","TelPhone":"18501309179","Tag":"频率计,失真度测试仪,交流毫伏表","ClassName":"频率计"},{"rn":"8","Part":"0","ID":"11792286","CompanyID":"83923","Type":"","Name":"宇津木计器UTSUKIKEIKI频率计检知器","Address":"","Descrip":"宇津木计器UTSUKIKEIKI频率计检知器
ASAHISEIKO旭精工株式会社,JFEアドバンテック株式会社,TECLOCK株式会社
SANKOサンコウ电子,KETTケツト科学研究,,KANETECカネテック,DOKOTAJAPANダコタ・ジャパン,REX雷克斯レックス,TEITSU帝通电子研究所,FTSエフティーエス,SOOKIソーキ
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KH-102甲醛气体检测仪
相关产品名称:KH-102甲醛便携型泵吸式甲醛检测报警仪
KH-102具有非常清晰的大液晶显示屏,声光报警提示,带内置泵,保证在非常不利的工作环境下也可以检测危险气体并及时提示操作人员预防。

特点
•自带吸气泵可将数十米距离外气体吸入仪器进行测定
•声、光报警
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本仪器可测量10Hz-2.4G之振荡频率,具有七位高亮度LED显示,该机性能稳定、测量精度高、体积小、重量轻、价格低廉,是一个既能测频率又能测周期、计数和电容多功能测试仪器。","Price":"","Picture":"2/20140709/635405006075511743605.jpg","PictureDomain":"img52","MarketPrice":"-1","WholesalePrice":"-1","RetailPrice":"-1","PromotionalPrice":"-1","PsOrder":"1354","IndexShow":"0","CompanyLink":"www.yodpbj.com","CompanyName":"北京亚欧德鹏科技有限公司","MaxOrder":"1","StandUrl":"/st37960","PgID":"84","CityID":"1","City":"北京市","Year":"9","UserID":"54669","ShowPrice":"0.00","AttType":"0","AttState":"3","AttAddType":"0","UpdateTime":"2017/7/14 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