產(chǎn)品名稱:衛(wèi)星同步超低頻感應(yīng)磁力儀 超低頻感應(yīng)磁力儀 磁力儀
產(chǎn)品型號(hào):JS704- LEMI-30
關(guān) 鍵 詞:衛(wèi)星同步超低頻感應(yīng)磁力儀 超低頻感應(yīng)磁力儀 磁力儀
JS704-LEMI-30主要用于觀測(cè)超低頻地磁場(chǎng),它由3根感應(yīng)式磁探頭和一個(gè)通訊單元(CAM)組成。通訊單元可與電腦連接。該儀器于測(cè)量30 —0.01 Hz頻率范圍的信號(hào),常用于地震前兆磁場(chǎng)異常的監(jiān)測(cè)。另外,該設(shè)備可作為任何數(shù)字記錄設(shè)備的模擬信號(hào)的輸出單元。
MAIN TECHNICAL PARAMETERS(主要技術(shù)指標(biāo))
Frequency band of received signals(信號(hào)頻率范圍) 0.001 ... 30 Hz
Transformation coefficient (傳輸系數(shù)):
On the flat part (水平段)
On the linear part (線性段)
20 mV/nT; 200 mV/nT
20*f mV/nT; 200*f mV/nT
Transformation coefficient error(傳輸系數(shù)誤差) <=3 dB
Noise rejection on (50 ± 0.2) and (60 ± 0.2) Hz(噪音抑制) >60 dB
ADC (CAM unit) resolution(A/D轉(zhuǎn)換) 24 bit
Power supply voltage(電源) ± (6-12) V
Total power consumption(總功耗) < 3 W
Temperature range of operation(工作溫度) -10 + 50oC
Outer dimensions(探頭尺寸) 長(zhǎng)度=870 mm; 直徑=85 mm
Weight of one sensor(探頭重量) 5.6 kg
Maximum length of connecting cable (電纜長(zhǎng)度) 200 m
Waterproof housing(防水外殼)
GPS sampling synchronization and coordinates determination(GPS同步和定位)
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