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3-COMPONENT HIGH PRECISION MAGNETOMETER LEMI-018



LEMI-018三分量高精度地磁仪

 

Main features(主要性能)
High resolution and precision(高分辨、高精度)
Low noise(低噪声)
Low temperature offset(低温漂)
waterproof housing(防水外壳)
Low power consumption(低功耗)
Automatic operation control(自动操作控制)
Real-Time Graphic display(实时曲线显示)
Internal real time clock(内部实时时钟控制)
Satellite synchronization(卫星同步)
Analog and RS-232 outputs(模拟和RS-232输出)

LEMI-018是用于地磁场观测的高精度专业矢量磁力仪,它由两部分组成:主机和三分量磁通门磁力仪。该仪器的最大优点是其极高的稳定性(低漂移)、高分辨率和高精度,这使它特别适合于固定台站的长期连续观测;其次,小巧轻便,功耗低,这又使它适合于流动台站和复杂地区观测;第三,GPS同步,可进行大范围同步阵列观测;第四,开机即记的傻瓜方式使得操作极为简便。

MAIN TECHNICAL PARAMETERS(主要技术指标)

Measuring ranges of total magnetic field at the display(磁场测量范围) ±68 000 nT
Resolution along each component  at the display, digital output and flash card data(分辨率)     0.01 nT
Measured range at analog output without additional compensation(无补偿模拟输出范围)  
±1000nT
Transformation factor of analog output(模拟输出传输因子)   2.4 mV/nT
Noise level at (0.03 - 0.3) Hz frequency band(频率在0.03-0.3Hz之间的噪音水平)  < 15 pT rms
Temperature drift(温度漂移)   <0.2 nT/°C
Long-term zero drift < ± 5 nT/year
Components orthogonality error(三分量方位误差 )   < 30 min of arc
Automated offset compensation band along each component (自动补偿范围)     ±68000 nT
Sample rate(采样率)  1 per s
Samples  averaging (by PC software)  平均采样率 2, 5, 10 ,15 ,20 ,30 ,60
Volume of memory (内存)  2 GB 闪存卡
Operating temperature range (工作温度) -20°C—+60°C
Power supply, battery (电源)    10—18 V
Power consumption(功耗)  <0.8 W

Weight (重量)  
                         sensor with support
                         electronic unit


1.2 kg
1.8 kg
Length of connecting cable(磁电缆长度)  5m
Length of connecting cable between GPS antenna and electronic unit (GPS电缆长度) 3m


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