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China, Chinese 20dx Geophone Sensor for Coal Mine Prospecting and Industrial Vibration Monitoring1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Geographic Surveying InstrumentOther Geographic Surveying InstrumentsGS 20dx GeophoneGeospace Geophone
SEIS TECH INC.
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Product Description 20DX geophone sensor is a classic series of geophones which are specially designed for extensive field applications. 20DX series geophones are considered to be the most reliable &lowest costs options in geophysical field considering their stable structure and reliability performance in hazard field environments.With the natural frequency options of 8Hz,10Hz, 14Hz, 28Hz, 40Hz, 60Hz or 100Hz, 20DX series geophones are suitable for assorted applications including but not limited to geophysical acquisition engineering monitoring, coil mine prospecting, security and industrial vibration monitoring.- Industry standard for cost effectiveness, quality and reliability.- Enhanced spurious response for full bandwidth at 2-ms sampling.- Available for vertical geophone and horizontal geophone for P wave, S wave and 3 component acquisition- Reinforced land and waterproof marsh case required no poting and provide easy access to basic units with lowest maintenance expenditures.- Standard natural frequency options of 8Hz, 10Hz,14Hz,28Hz,40Hz,60Hz or 100Hz optional.- 3-year limited warranty on basic element exclusive of high voltage, lightning or physical abuse. TypeST-20DX8hzST-20DX10hzST-20DX14hzST-20DX28hzST-20DX40hzST-20DX 60hzST-20DX 100hzNatural frequency ( Hz ) 8±5%10±5%14±5%28±5%40±5%60±5%100±5%Open circuit damping 0.38±5%0.30±5%0.22±5%0.27±5%0.37±5%0.52±5%0.45±5%Damping with Shunt Resistor0.71±5%0.70±5%0.51±5%0.552±5%0.576±5%0.60±5%\Calibration Shunt Resistance(ohms)180010001000100015001500\Open Circuit Intrinsic Voltage Sensitivity(V/m/s)28.0±5%28.0±5%28.0±5%39.0±5%42.0±5%39.0±5%23.0±5%Sensitivity with Shunt Resistor(V/m/s)23.0±5%20.0±5%20.0±5%28.0±5%30.4±5%27.0±5%\Coil Resistance (ohms) 395±5%395±5%395±5%395±5%575±5%668±5%570±5%Harmonic Distortion ( % ) ≤0.2≤0.2≤0.2≤0.2≤0.2≤0.2≤0.2Typical Spurious Frequency ( Hz )≥180≥200≥250≥350≥380≥400≥600Moving Mass ( g )11.011.011.011.08.206.55.0Max.coil excursion p-p (mm)1.51.51.51.51.501.51.5Max.tilt angle20o20o20o20o20o20o20oElement Diameter (mm) 25.425.425.427.027.027.027.0Element Height (mm) 33.5033.5033.5033.5033.5033.533.5Element Weight (g) 87.087.087.0100.095.095.095.0Operating Temperature(oC)-45oC to + 80oC45oC to + 80oC45oC to + 80oC45oC to + 80oC45oC to + 80oC45oC to + 80oC45oC to + 80oC- All parameters specified herein are rated at a temperature 20oC±2oC. - 3-year limited warranty exclusive of high voltage, lightening and physical abuse.
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