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Tel:+86-21-63230205 +86-21-63518095
+86-21-63518096 +86-21-63518097
Email:sales@enoutech.com
Add: Fujian Zhonglu No.225, Shanghai PRC.
Zip:200001
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| TY-FBS-3DBH |
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TY-FBS-3DBH borehole Seismometers are 3-component integrated, electro-magnetic transduction and force-balanced electronic feedback Short-period (Broadband) Seismometer with high sensitivity and large dynamic range.Combined with a sealed cylinder, a fixing chassis and other accessories, they are suitable for seismic observation at the deep well.
TY-FBS-3DBH borehole Seismometers use a short period (broadband) mechanical sensor which has stable mechanical resonant frequency and a high sensitivity electro-magnetic transducer. Its equivalent closed loop resonant frequency reaches 1 (0.05)Hz and its observation frequency range reaches 1 (0.05) ～40 Hz after using the electronic feedback technology. As a result, the dynamic range of the Seismometer is heightened and the nonlinear distortion is reduced. Because of the above, its compensation capacity against tilt is heightened.
TY-FBS-3DBH borehole Seismometers are simple in structure. The electronic feedback circuit and DC transduction circuit are in the same PC Board which is installed in the sealed metal cylinder together with the mechanical sensor, which makes the performance stable and the maintenance easy.It also includes the going-down facility through the well , fixing facility at the bottom of the well, which are scientifically designed to be fixed to the well closely to make the perform-ance stable and the use and maintenance easy.The maximum well depth may reach 1000 m.
| Main Characteristics： |
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| 3-Component Integration Structure |
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| Frequency Response：1( 0.05 )～40 Hz |
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| Electro-magnetic transduction; Force balanced and Electronic Feedback |
| Large Dynamic Range：120dB |
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| Built-in Isolated DC Power Transformer |
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| Small in Size; Low in Power Consumption |
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| Suitable Well Diameter:φ125mm～φ160mm |
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| Strong Compensation Capacity against Tilt |
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| Specifications: |
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Structure |
3-component Integration; Electro-magnetic transduction; Force Balanced Electronic Feedback |
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Equivalent Self-vibration Frequency |
1 ( 0.05) Hz |
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Frequency Response |
1( 0.05)～40 Hz |
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Maximum Output |
±8V（balanced; differential） |
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Distortion factor |
<-80db |
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Sensitivity |
800V/m/S（balanced） |
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Cross Axis coupling |
Better than 1% |
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Dynamic Range |
> 120db |
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Autoeciousness Resonant Frequency |
> 80Hz |
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Calibration Coil Resistance |
70Ω |
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Calibration Sensitivity |
1.2V/m/S |
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Output Impedance |
<100Ω |
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DC Power Supply |
8～20V |
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Static Current |
<50mA, when power supply12V |
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Dimensions |
f114mm X 950mm |
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Maximum Angle Tilt |
2º |
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Well Diameter |
φ125mm～φ160mm |
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Maximum Well Depth |
1000 m |
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