Nanjing

Building 11, Phase 3, Liandong U Valley, No. 7 tonglian Road, Jiangning District

Name： FVM400手持式矢量磁通门计

Date：2019-05-05

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FVM400手持式矢量磁通门计

Product introduction：资料待更新········

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Overview
Specifications
Parameter

FVM400矢量磁通门计是精度的测量磁场矢量的仪器。它小巧的尺寸、便携的设计使它成为现场和实验室的理想选择。高分辨率五位的数字显示使它在100,000nT磁场的时候分辨率能够达到1nT,因此它能够测量大磁场的细微变化，比如地磁场。两种坐标表示使用者可以选择直角坐标或者极坐标显示磁场的分量。在测量磁场大小和方向的时候极坐标有独特的便利性，它不需要人工的计算就能得到想要的数据。单位可选使用者可以选择显示的单位:nT、μT或者mG，而不需要记住这些单位之间的换算系数。相对显示模式想对测量模式能够测量磁场和初始值之间的变化，一个简单的REL按键可以清空当前的显示的值，然后显示和原磁场之间的差值。直到再次按REL键。多路模拟输出通过一个8芯的微DIN联接器，原始的模拟磁强计信号和处理过的信号一样可以用来记录或进一步的处理。远程控制 FVM-400能够通过标准的RS232串口远程控制，速度9600波特。在远程控制状态下，使用者能够设定测量参数，获取样本初始的数据记录或者之前存储的数据。数据存储 FVM-400有三种数据存储模式：快速存储（snapshot）,自动存储（record）和手动存储（manual）,快速存储功能存储7.5秒钟的数据，速度是69.5个样本每秒钟。自动存储功能存储30秒数据，速度是17.4个样本每秒钟。在手动存储模式下，使用者决定什么时候存储样本数据。存储的数据可以在显示屏上显示，传送到模拟输出端口或者RS232端口。 FM300前面板软件随FVM-400配套的软件包提供通过RS232端口连接到个人计算机上，并能够下载、显示和存储FVM-400的数据。同时软件还提供通过网络服务器和通过因特网存储数据。

　　　特征及应用:Ø 高分辨率测量：在100，000nT的磁场下，分辨率1nTØ ±0.25﹪的基本分辨率Ø 可选的显示单位:nT、μT或者mGØ 三轴矢量同时在屏幕上显示Ø 绝对或者相对显示模式Ø 六组模拟输出信号Ø 三组数据存储模式Ø 　RS232远程控制操作

技术说明书磁场的测量分量范围分辨率精确度1

X,Y,Z ±100,000nT 1 nT ±(读数的0.25%+5nT)

R(esultant) 173,205nT 1nT ±(读数的0.25%+5nT)

D(eclination)2 ±180° 0.1° 1°

I (nclination)3 ±90° 0.1° 1°

1. 在25±5℃检测，在调零之后。最大调零磁场值是20nT。

2. 在XY平面上X轴和磁场矢量之间的夹角。

3. 磁场矢量和XY平面之间的夹角。

模拟输出：

参数直流交流输出模拟磁力计

数量 31 32

步长 1，2，4，8，16，32，64，128 无

电压范围 ±2.5V ±2.5V

比例因子 2.441×步长 mV/mG 2.441 mV/mG

精确度满量程的±1% 满量程的±5%

分辨率 12bits 不适用

零磁场输出 0±5mV 0±5mV

频率响应直流到10Hz 直流到＞100Hz

1. 对应于绝对或者相对（X，Y，Z）或者（R，D，I）分量取决于选择模式。2. 对应于绝对分量（X，Y，Z）。数据存储：参数快速存储存储手工

数据点 525 525 525

存储时间 7.5S 30S 使用者决定

样本速度 69.5样本/秒 17.4样本/秒使用者决定

串口：三电缆RS232接口，传输速度9600波特，一个开始码，一个中指码，无奇偶校验码。角度量：X和Y轴传感器被安置在平行于底面、并分别平行于长度和宽度边长方向，偏差不超过±0.25°。Z轴传感器被安置在底面垂直方向，偏差不超过±0.25°。传感器度被正确的安排在坐标系统中。说明书温度范围：0-50℃ 电源：两组9V电池。锂电池是最佳的选择，但也可以选择碱性电池。标准工作电源消耗550mW，但电源低于20mW的时候，电池不能继续工作。工作时间：锂电池可持续连续工作24小时，碱性电池可连续工作4小时。FVM-400在没有按键操作10分钟后自动关机。在这种状态下，模拟输出回路也自动关闭以减少电池的消耗。按任何键将唤醒FVM-400。FVM-400锂电池能够在这种省电状态下持续工作150小时。探头的尺寸：25.4mmW×25.4mmH×100.4mmL(

Last：Group3高斯计/特斯拉计Next：μMag系列手持式磁通门计/磁力计

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