Generated by Rank Math SEO, this is an llms.txt file designed to help LLMs better understand and index this website.

# zhongke: Just another WordPress site

## Sitemaps
[XML Sitemap](https://www.seis-tech.com/sitemap_index.xml): Includes all crawlable and indexable pages.

## Posts
- [Connector for IO system Four Scorpion](https://www.seis-tech.com/connector-for-io-system-four-scorpion/): Connector for IO system four scorpion is composed of 6 pin inserts. It is a detachable connector with the advantages of reliability, waterproof, and easy assembly. The connector works together with IO system four scorpion acquisition unit for seismic signal transmission. Suitable data transmission cable is: Outer diameter 8.9mm for cable jacket, and outer diameter 1.4mm. for each insulation with cable core 7x0.19 each.
- [Single Axis Geophone 1Hz with BNC Plug](https://www.seis-tech.com/single-axis-geophone-1hz-with-bnc-plug/): Single axis geophone 1Hz with BNC plug is specially designed for long time vibration monitoring on construction site for 24/7 hours. The steel round plate geophone base provides a good coupling solution for hard surfaces like cement and pitch pavement. A complete geophone set will deliver with geophone base, lead-in cable and a standard BNC connector equipped.
- [Nodal Geophone Sensor 5Hz](https://www.seis-tech.com/nodal-geophone-sensor-5hz/): Nodal geophone sensor 5Hz is an ideal choice for the nodal system, single point acquisition in landslide monitoring, shallow exploration in urban areas, natural seismic observing, background notice collecting, etc.
- [Sensor SM-6/H-B Style 4.5Hz Geophone](https://www.seis-tech.com/sm-6-h-b-style-4-5hz-geophone/): Sensor SM-6/H-B style 4.5Hz Geophone( P/N: ST-4.5B) is a low distortion geophone with high sensitivity of 80.0V/m/s. The SM-6/H-B style 4.5Hz Geophone( P/N: ST-4.5B) can be supplied for vertical and horizontal orientation, which is an ideal choice for the shear-wave horizontal elements, partnering the ST-4.5B vertical sensitivity geophone in a 3-component package.
- [Marine Resistivity Cable](https://www.seis-tech.com/marine-resistivity-cable/): Marine resistivity cable is specially designed for VES, ERT, IP and SP electrical resistivity in water, shallow sea and borehole well.
- [GS One Geophone Sensor (Equivalent)](https://www.seis-tech.com/gs-one-geophone-sensor-equivalent/): GS One geophone sensor(P/N: ST-10PA) is a type of high precision and low distortion sensor, which is more and more applied in 2D&3D seismic survey and vibration monitoring with a single unit by replacing multi-geophone strings.
- [Low Frequency Geophone 1Hz](https://www.seis-tech.com/low-frequency-geophone-1hz-2/): Low frequency geophone 1Hz  (P/N: ST-1N) in  vertical direction (P wave) and horizontal direction (S wave) are available. They are suitable for deep seismic exploration, engineering pulse measurement and other vibration analysis.
- [4.5Hz 3C Geophone](https://www.seis-tech.com/4-5hz-3c-geophone/): The 4.5Hz 3C Geophone (P/N: ST-4.5N-3C) is an ideal instrument to perform HVSR, MASW and Vibration Analysis. 3units. of 4.5Hz geophone sensors are properly coupled and embedded in the reinforced 3C geophone case with X,Y&Z axis and delivered with standard soil spikes with length of 75mm.
- [SM-6 B Coil Equivalent 4.5Hz Geophone Sensor](https://www.seis-tech.com/4-5hz-geophone-sensor/): SM-6 B Coil Equivalent 4.5Hz Geophone Sensor (ST-4.5N) is a long coil travel version geophone, which is equivalent to SM-6 B coil 4.5Hz geophone. The extra coil travel offers an advantage for higher tilt requirements and where larger amplitude signals may be encountered, for example, in industrial vibration monitoring.
- [Laux Power Cable Head for Sercel 408 System](https://www.seis-tech.com/laux-power-cable-head/): Laux power cable head is a 3 pin electrical connector female head for Laux Sercel 408 system. A standard Laux power cable head will be equipped with 1.5m lead-in cable 7.8mm OD and 2pcs.of cable noses equipped.
- [ABEM LUND Cable Connector](https://www.seis-tech.com/abem-lund-cable-connector/): ABEM Lund cable connector is a specialized 32 pin male coaxial connector (18-32P) for ABEM Terrameter Lund resistivity&IP system. The connector shell is made of reinforced toughening nylon in red color with gold plating pin inserts equipped which is reliable, durable in field work for long time operation.
- [Low Frequency Geophone 1Hz](https://www.seis-tech.com/low-frequency-geophone-1hz/): Low frequency geophone 1hz in vertical direction (P wave) and horizontal direction (S wave) are available, which are suitable for deep seismic exploration, engineering pulse measurement and other vibration analysis.
- [Hammer Switch Extension Cable](https://www.seis-tech.com/hammer-switch-extension-cable/): Hammer switch extension cable usually works together with trigger switch cable for long distance use. The most widely used cable length will be 90m with Bendix style 3 pin female connector on one side and Bendix style 3 pin male connector on the other side.
- [Trigger Switch Cable](https://www.seis-tech.com/trigger-switch-cable/): Trigger switch cable with a start connector is available. The trigger connector could be a 3 pin male connector for Strataview Seismograph. Or, the start connector could be a 4 pin male connector for PASI GEA 24 Seismograph.
- [Borehole Triaxial Geophone 10Hz](https://www.seis-tech.com/borehole-triaxial-geophone-10hz/): Borehole Triaxial Geophone 10Hz ( Borehole 3C geophone 10Hz) is mainly used to receive seismic waves in the borehole well. The triaxial geophone is equipped with three high-sensitivity 10hz geophone sensors arranged in Cartesian coordinates, which can receive seismic signals in three directions simultaneously. The borehole triaxial geophone adopts a torsion spring and electromagnetic well lock device, which is suitable for borehole drilling with diameter 60mm to 160mm (The maximum drilling diameter can up to 200mm by adjusting position of the adjusting screw).
- [Triaxial Geophone 2Hz](https://www.seis-tech.com/triaxial-geophone-2hz/): Triaxial Geophone 2Hz is an ideal instrument for the seismic survey and industrial vibration monitoring. Inside of the triaxial geophone, three mutually perpendicular 2Hz geophone elements are arranged in Cartesian coordinates, which means that the vertical geophone element is Z direction, the east direction horizontal geophone element is X direction, and the north direction horizontal geophone element is Y direction, by which the Seismic signals in the three directions of X, Y and Z will be taken simultaneously and converted into electrical signal outputs.
- [High Sensitivity Geophone 1Hz](https://www.seis-tech.com/high-sensitivity-geophone-1hz/): Low frequency and high sensitivity geophone 1Hz  (P/N: ST-1A) in  vertical direction (P wave) and horizontal direction (S wave) are available. They are suitable for deep seismic exploration, engineering pulse measurement and other vibration analysis.
- [2Hz High Sensitivity Geophone](https://www.seis-tech.com/2hz-high-sensitivity-geophone/): 2Hz High Sensitivity Geophone(P/N: ST-2A) is designed for receiving deep, low frequency and weak signals. With the characteristics of ultra-low natural frequency, ultra-high sensitivity along small volume and lightweight. ST-2A is suitable for engineering vibration measurement and single point signal acquisition with vertical, horizontal or three-component combination optional.
- [Cable Jumper](https://www.seis-tech.com/cable-jumper/): Cable jumper is also called “cable to electrode jumper”  which is used to connect steel electrode to the ert cable's electrode take-out.
- [ERT Cables for ABEM Instruments](https://www.seis-tech.com/ert-cables-for-abem-instruments/): ERT cables for ABEM instruments are multi-electrode cables that are used to transfer current and potential signals from the resistivity meter to the ground. ERT cables for ABEM instruments are mostly widely used in electrical resistivity tomography (ERT, Electrical Imaging) method and resistivity imaging method for infrastructure projects, environmental studies, water content variations, movements of pollutants and seepage through embankment dams, etc.
- [PASI Seismic Cable](https://www.seis-tech.com/pasi-seismic-cable/): PASI Seismic Cable ( Seismic Cable which is used for PASI GEA 24 Seismograph) is a specialized geophone spread cable. PASI Seismic Cable is widely applied for seismic refraction and surface reflection surveys with portable weight, good contact and firm sealing.
- [Piezo Hydrophone 10Hz](https://www.seis-tech.com/piezo-hydrophone-10hz/): Piezo Hydrophone 10Hz with the type of YS-25 or YS-35 is a piezoelectric sensor for prospecting purposes in the swamp, transition zone, river and shallow sea. The product is small size, stable and high sensitivity for output and vertical receiving. Its high temperature injection molding seal structure makes it better for water proof and its tail suspension wire’s design makes it more suitable for field wiring.
- [Multi Electrode Resistivity Cable (IP Resistivity Cable)](https://www.seis-tech.com/resistivity-cable/): Multi-electrode resistivity cable ( IP resistivity cable) is specially made to be used for electrical resistivity tomography, deep resistivity measurements, self potential and induced polarization(IP) measurements. It is usually work with multi-electrode resistivity instruments and switch boxes for Groundwater exploration, geotechincal investigation, monitoring of dams and dikes, environmental studies, geological survey, mineral prospecting, archaeology, detecting of cavities and buried ojbects, underwater, boreohole and cross-hole measurements.
- [3/12/24/48 Channel Hydrophone Cable Streamer](https://www.seis-tech.com/12-24-48-channel-hydrophone-cable-streamer/): ST series hydrophone cable streamer is designed for seismic refraction surveys at longitudinal (P-) waves. The hydrophone modules utilize high sensitive piezoceramic sensors. The default number of modules on the hydrophone cable is 12 or 24, but it can vary from 1 to 48. The standard interval between the hydrophone and the lead-in cable length at the end is 10m, 20m but can vary upon the client's requests.
- [Non Polarized Electrode NP-120Pro](https://www.seis-tech.com/non-polarized-electrode-np-120pro/): Non Polarized Electrode NP-120Pro is specialized designed for long period geoelectric observations, long period magnetotelluric observation and other fields which have critical requirements for the stability on potential difference.
- [Non Polarized Electrode NP-60Plus](https://www.seis-tech.com/non-polarized-electrode-np-60-plus/): Non Polarized Electrode NP-60Plus is more widely used in Conventional Resistivity&IP, High-power induced polarization, Spontaneous potential observation, Controlled sourced and Magnetotelluric sounding.
- [Non Polarized Electrode NP-50Lx](https://www.seis-tech.com/non-polarized-electrode-np-50lx/): Non Polarized Electrode NP-50Lx is widely applied in Conventional Resistivity&IP, High-power induced polarization, Spontaneous potential observation, Controlled source and Magnetotelluric sounding.
- [20DX Geophone Sensor](https://www.seis-tech.com/20dx-geophone-sensor/): 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.
- [Geophysical Adaptor](https://www.seis-tech.com/geophysical-adaptor/): Assorted geophysical adaptors are available upon for different system compatibality and switching in various seismic acquistion fields. Most widely used adaptors are:
- [SH17 WCR Geophone Connector(SH17WCR 2M2F)](https://www.seis-tech.com/sh17-wcr-geophone-connector/): SH17WCR Geophone Connector(SH17WCR 2M2F)  is used to connect geophones to 408 /428 acquistion system.
- [5515 Geophone Connector](https://www.seis-tech.com/5515-geophone-connector/): Bulk 5515 Geophone Connectors are available in inventory.  Contact with us to get more detailed information.
- [Assorted Dust Caps for Geophone Connectors](https://www.seis-tech.com/assorted-connector-dust-caps/): Assorted Dust Cap for Geophone Connectors are available.
- [Assorted Geophone Connector Pin Inserts](https://www.seis-tech.com/geophone-connector-pin-insert/): Assorted Geophone Connector Pin Inserts are available upon request. Contact with us to get special discounts !
- [Banana Pin Insert for KCL / Kooter Connector](https://www.seis-tech.com/banana-pin-insert-for-kooter-kcl-connector/): Bulk Banana Pin Insert for KCL / Kooter / KC2L-4 Dual Connector are available.
- [Geophone Cable Molded D-loops](https://www.seis-tech.com/geophone-cable-molded-d-loops/): Geophone Cable Molded Pulyurethane D-Loops suitable for 4.6mm OD cable, 5.3mm OD cable, 6.4mm OD Cable and 7.8mm OD Cable are available.
- [Geophone Cable Metal D-loops](https://www.seis-tech.com/geophone-cable-metal-d-loops/): Geophone Cable Metal  D-Loops suitable for 4.6mm OD cable, 5.3mm OD cable, 6.4mm OD Cable and 7.8mm OD Cable are available.
- [Geophone Cable Loose Poly D-loops](https://www.seis-tech.com/geophone-cable-loose-d-loops/): Geophone Cable Loose Poly D-Loops suitable for 4.6mm OD cable, 5.3mm OD cable, 6.4mm OD Cable and 7.8mm OD Cable are available.
- [Steel Lanyard for Geophone Connector](https://www.seis-tech.com/steel-lanyard-for-geophone-connector/): Steel Lanyard for connecting the geophone connector with it's dust cap, for the purpose of protect connector pin inserts. Contact with us to get more detialed information.
- [Geophone Kit Hasp](https://www.seis-tech.com/geophone-kit-hasp/): Various Geophone Kit Hasps with the following dimenions are available in inventory:
- [Assorted Geophone Cases](https://www.seis-tech.com/assorted-geophone-cases/): Assorted Geophone Cases equipped with steel spikes / brass spikes / tripods are available in inventory. Contact with us to get more detailed information !
- [Snow Flat Base for Vertical Geophone](https://www.seis-tech.com/snow-flat-base-for-vertical-geophone/): Snow flat base for vertical geophone is specialized designed for field acquistion in snow or desert field and the tripod designing will make geophone fits well to firm earth on floppy snow surface or desert.
- [Flat Plate Base for Horizontal Geophone](https://www.seis-tech.com/snow-flat-plate-base-for-horizontal-geophone/): Flat plate base for horizontal geophone is specialized designed for field work in snow or desert field and the tripod designing will make horizontal geophone fits well to firm earth on floppy snow surface or desert.
- [Assorted Geophone Spikes](https://www.seis-tech.com/assorted-geophone-spikes/): Assorted Geophone Spikes are available in inventory.  Contact with us to get detailed information!
- [Transverse Cable for Sercel 408UL Acquisition System](https://www.seis-tech.com/transverse-cable-for-sercel-408ul/): ST Series Transverse Cable for 408UL acquisition system transmits analog signal and seismic signal under various environments and climatic conditions, which is suitable for land and shallow water use in the fields.
- [Cable Link Intermediate Section 55m for 408UL Acquisition System](https://www.seis-tech.com/408-cable-link-intermediate-section-55m/): ST Series Cable Link Intermediate Section for 408UL acquisition system transmits analog signal and seismic signal under various environments and climatic conditions, which is suitable for land and shallow water use in the fields.
- [Cable Link End Section 27.5m for 408UL Acquisition System](https://www.seis-tech.com/408-cable-link-end-section-27-5m/): ST Series Cable Link End Section for 408UL acquisition system transmits analog signal and seismic signal under various environments and climatic conditions, which is suitable for land and shallow water use in the fields.
- [3 Contact Power Cable Head with Battery Clip](https://www.seis-tech.com/3-contact-power-cable-head-with-battery-clip/)
- [FM4 WPSR End Connector](https://www.seis-tech.com/fm4-wpsr-end-connector/): FM4 WPSR End Connector is available. Contact with us to get special discounts.
- [FM4 ST+ End Connector](https://www.seis-tech.com/fm4-st-end-connector/): FM4 ST+ end connector for 408UL and 428XL Telemetry Cables is available in inventory. Contact with us and get special discounts.
- [408 /428 Power Station XDEW 10 Contact Jam Nut](https://www.seis-tech.com/408-428-power-station-xdew-10-contact-jam-nut/)
- [408 /428 Power Station 3 Contact Jam Nut](https://www.seis-tech.com/408-428-power-station-3-contact-jam-nut/)
- [428XL FDU Card Cover Assembly](https://www.seis-tech.com/428xl-fdu-card-cover-assembly/)
- [408UL FDU Card Cover Assembly](https://www.seis-tech.com/408ul-fdu-card-cover-assembly/)
- [408 FDU Grounding Nut ST+/ WPSR](https://www.seis-tech.com/408-fdu-grounding-nut-st-wpsr/)
- [408 FDU Grounding Clamp ST+ / WPSR](https://www.seis-tech.com/408-fdu-grounding-clamp-st-wpsr/)
- [ARIES 16 Pin Cable Head Socket](https://www.seis-tech.com/aries-16-pin-cable-head-socket/)
- [ARIES 16 Pin Cable Head Socket Assy.](https://www.seis-tech.com/aries-16-pin-cable-head-socket-assy/)
- [ARIES 16 Pin Box Jam Nut](https://www.seis-tech.com/aries-16-pin-box-jam-nut/)
- [ARIES 8 Pin Cable Head Socket](https://www.seis-tech.com/aries-8-pin-cable-head-socket/)
- [ARIES 8 Pin Box Jam Nut](https://www.seis-tech.com/aries-8-pin-box-jam-nut/)
- [I/O IV Power Cable Head A Unit / D Unit](https://www.seis-tech.com/i-o-iv-power-cable-head-a-unit-d-unit/)
- [IO IV Cable Head A Unit / D Unit](https://www.seis-tech.com/i-o-iv-cable-head-a-unit-d-unit/)
- [Dust Cap for ARIES 8 Pin Jam Nut](https://www.seis-tech.com/dust-cap-for-aries-8-pin-jam-nut/)
- [I/O IV Cable Insert](https://www.seis-tech.com/i-o-iv-cable-insert/)
- [I/O IV Power Insert](https://www.seis-tech.com/io-iv-power-insert/)
- [I/O IV Cable Head Dust Cap for A Unit / D Unit](https://www.seis-tech.com/i-o-iv-cable-head-dust-cap-for-a-unit-d-unit/)
- [I/O IV Cable Protective Cup](https://www.seis-tech.com/i-o-iv-cable-protective-cup/)
- [KCK Push Fit Connector (Female / Male)](https://www.seis-tech.com/kck-push-fit-connector/): KCK Push Fit Connector( Female/Male/Dual Female and Male ) are available. Contact with us to get special disounts !
- [408 Screw Fit Geophone Connector ( Male / Female)](https://www.seis-tech.com/408-screw-fit-geophone-connector/): 408 Screw Fit Geophone Connector in the styles of Male Connector, Female Connector or Dual Male&Female Connector are available. Contact with us to get special discounts !
- [KCL Geophone Connector ( Female / Male)](https://www.seis-tech.com/kcl-geophone-connector/): KCL Geophone Connectors in the styles of single female connector, single male connector and dual female&male connector are available. Contact with us to special discounts !
- [Kooter Geophone Connector ( Female / Male)](https://www.seis-tech.com/kooter-geophone-connector/): Kooter Geophone Connectors in the styles of single female connector single male connector and dual female&male connector are available. Contact with us to get special discounts !
- [Herma IV Marsh Geophone Cable Connector](https://www.seis-tech.com/herma-iv-marsh-geophone-cable-connector/): Herma IV Marsh Geophone Cable Connectors with 4.6mm,5.3mm,6.4mm and 7.8mm cable boots are available. Mostly widely used cable boots are 5.3mm and 6.4mm waterblocked marsh geophone cable.
- [Amphib IV Marsh Geophone Connector](https://www.seis-tech.com/amphib-iv-marsh-geophone-connector/): Amphib IV Marsh Geophone Connectors with 4.6mm,5.3mm,6.4 and 7.8mm cable boots are available. Mostly widely used cable boots are 5.3mm and 6.4mm water blocked marsh geophone cable.
- [Split Plate Clip](https://www.seis-tech.com/split-plate-clip/): Bulk Split Plate Clip is available in Stock with Red, Yellow or Blue Color optional.
- [Muller Clip with Y Mold](https://www.seis-tech.com/muller-clips-with-y-mold/): Bulk Muller Clip with Y-Mold are available in inventory. With BU-27CG Style Narrow Clip partnering with BU-29-0 Black Insulator as Negative Pole and BU-27CGW Wide Clip partnering with BU-29-2 Style Red Insulator as Positive Pole in Seismic Data Acquisition.
- [Mueller Clip](https://www.seis-tech.com/mueller-clip/): Bulk Mueller Clip is available in inventory. With BU-27CG Narrow Clip partnering with BU-29-0 Black Insulator and BU-27CGW Wide Clip partnering with BU-29-2 Red Insulator.
- [SM-4 Equivalent Geophone Sensor](https://www.seis-tech.com/sm-4-equivalent-geophone-sensor/): The SM-4 equivalent geophone sensor (ST-8N/ST-10N/ST-14N/ST-28N/ST-40N/ST-60N/ST-100N) is designed for low weight, long field-life,and ultra reliable performance.Precision engineered components and computerized test equipment ensure consistency in manufacture and operation throughout and beyond the limited replacement guarantee period of three years.
- [Bendix 61 Pin Connectors](https://www.seis-tech.com/bendix-61-pin-connectors/): Bendix 61 pin connectors (equivalent ) are available in inventory. Contact with us and get special discounts !
- [Three Dimensional Geophone ( 3D Geophone )](https://www.seis-tech.com/3d-geophone/): Three Dimensional Geophone (3D Geophone) is a type of electromechanical conversion device. Inside of the 3D geophone, three mutually perpendicular geophone elements are arranged in Cartesian coordinates, which means that the vertical geophone element is Z direction, the east direction horizontal geophone element is X direction, and the north direction horizontal geophone element is Y direction, by which the Seismic signals in the three directions of X, Y and Z will be taken simultaneously and converted into electrical signal outputs.
- [KPT55 Pin Connectors](https://www.seis-tech.com/kpt55-pin-connectors/): KPT55 Pin Connectors (22-55S and 22-55P equivalent Field Installable Connector Assy) are Available. Contact with us and get special discounts !
- [EPS Portable Digital Seismometer](https://www.seis-tech.com/eps-portable-digital-seismometer/): EPS portable digital seismometer is a stand-alone and broadband seismometer. It is no need to lock the pendulum or adjust pendulum position, and the transfer function is very stable. EPS digital seismometer is embedded with three-component geophone sensors, high-sensitivity Beidou +GPS module, electronic compass, attitude sensor, bluetooth module and rechargeable lithium battery, which enable the seismometer could continuously work for over 20 days without any external power supply. EPS digital seismometer owns the functions of timed power-on acquisition, timed power-off after acquisition, or continuous data acquisition. It adopts USB, RS232, Bluetooth and other interactive work mode and data will be automatically stored locally.
- [Dual Sensor 10Hz](https://www.seis-tech.com/dual-sensor-10hz/): With proprietary intellectual property rights, the dual sensor 10Hz of YS series is OBC seismic sensor used in ocean bottom, it presses the ghost reflection and the water reverberation and improves the accuracy of seismic data interpretation.
- [Three Component Geophone (3C Geophone)](https://www.seis-tech.com/three-component-geophone-3c-geophone/): Three component geophone is kind of land cased geophone to perform HVSR,MASW and vibration analysis, with features of robust, light weight and convenient for field operation. One vertical and two horizontal high-precisions geophone sensors are properly coupled and mounted in a robust waterproof 3C case which equipped with 75mm steel spikes. 3C geophone string is widely adopted in underground water surveys, geological stratigraphy, landslide studies, pile foundation detecting, subsoil cavities detection, mining, archaeology, etc.
- [428XL Telemetry Cable](https://www.seis-tech.com/428-xl-telemetry-cable/): 428XL Telemetry Cable transmits analog signal and seismic signal under various environments and climatic conditions, which is suitable for land and shallow water use in the fields.
- [3/6/12/24/48 Channel Seismic Cable](https://www.seis-tech.com/6-12-24-48-channel-seismic-cable/): ST series 3/6/12/24/48 channel portable seismic cables are specialized cables for geophysical exploration and seismic operations, mainly used for the transmission of seismic signals in seismic survey operations such as petroleum, coal, hydropower, metallurgy and engineering geophysical exploration.
- [Hydrophone 5Hz](https://www.seis-tech.com/hydrophone-5hz/): Hydrophone 5Hz(YS-25-5Hz) is low frequency piezoelectric sensor for prospecting purpose in swamp, transition zone, river and shallow sea. The product is small size, stable and high sensitivity for output and non-directional receiving. Its high temperature injection molding seal structure makes it better for water proof and its tail suspension wire’s design makes it more suitable for field wiring.
- [Low Frequency Geophone 2Hz](https://www.seis-tech.com/low-frequency-geophone-2hz/): Low Frequency Geophone 2Hz (ST-2A) is designed for receiving deep, low frequency and weak signals, with the characteristics of ultra-low natural frequency, ultra-high sensitivity along with small volume and light weight. ST-2A is suitable for engineering vibration measurement and single point deep seismic exploration with vertical, horizontal or three-component combination optional.
- [NK27 Female Refraction Cable Connector](https://www.seis-tech.com/nk27-female-refraction-cable-connector/): NK27 Female refraction cable connector is a sort of coaxial  connector with multiple size cable boots from 6.5mm to 12.0mm OD, mostly commonly used cabe boot is 8.3mm OD.
- [NK27 Male Refraction Cable Connector](https://www.seis-tech.com/nk27-male-refraction-cable-connector/): NK27 Male Refraction Cable connector is a sort of coaxial connector with multiple size cable boots from 6.5mm to 12.0mm OD, mostly commonly used cabe boot is 8.3mm.
- [NK27 Male Socket for Panel Mounting](https://www.seis-tech.com/nk27-male-socket/): NK27 Male Socket for Panel Mounting is widely applied on assorted seismographs at panel side, with the purpose of connecting with NK27 female connector at seismic cable side.
- [12-10P End Connector(MIL-C-26482)](https://www.seis-tech.com/12-10p-end-connectormil-c-26482/): The 12-10P end connector (MIL-C-26482 equivalent) is applied for DSS Cube / Omnitrcs DATA Cube3 seismic data recorder, which is a 3-channel and 24-bit seismic system. The 12-10P End connector (MIL-C-26482) is used on the sensor cable to connector geophones and the data recorder with the following features:
- [FM4 WPSR End Connector](https://www.seis-tech.com/fm4-end-connector-wpsr/): FM4 WPSR end connector for 428xl FDU/DSU cable is available. Contact with us to get special discounts.
- [FM4 St+ End Connector for 408UL and 428XL Systems](https://www.seis-tech.com/fm4-end-connctor-st/): FM4 ST+ end connector for 408UL and 428XL Telemetry Cables is available. Contact with us to get special discounts.
- [408 / 428 System Connectors and Spares](https://www.seis-tech.com/408-428-system-connectors-and-spares/): Seis Tech supplies various 408 / 428 System Connectors and Spares, including but not limited to 428 telemetry cable, 408 cable link end section, 408 cable link intermediate section, 408 transverse cable, FM4 connector, FDU card cover, 3 contact jam nut, 10 contact jam nut, FDU grounding clamp&nut, and etc.
- [ARAM ARIES System Connectors and Spares](https://www.seis-tech.com/aram-aries-system-connectors-and-spares/): Seis Tech supplies various ARAM ARIES system connectors and spares, including but not limited to Aries 16 pin cable head socket, Aries 16 pin box jam nut, Aries 8 pin cable head socket, Aries 8 pin jam nut, the mating dust caps and etc.
- [I/O system IV cable head and spares](https://www.seis-tech.com/io-system-connectors-and-spares/): Seis Tech supplies various I/O system IV cable head and spares, including but not limited to cable insert, power insert, cable head, dust cap, cable protective cup and etc.
- [Ordinary Split Plate Clip Take-out TKO](https://www.seis-tech.com/ordinary-split-plate-clip-take-out-tko/): Ordinary Split Plate Clip Take-out TKO is widely  used on seismic cable and ert cable for data transmisstion to seismographs, data loggers and IP instruments.
- [Molded Split Spring Connector Take-out TKO](https://www.seis-tech.com/molded-split-splate-clip-take-out-tko/): Molded Split Spring Connector Take-out TKOs are widely applied on seismic cables, ip resistivity cables and ert cables for data transmission to seismographs, recorders and data loggers.
- [Mueller Clip Take-out](https://www.seis-tech.com/mueller-clip-cable-take-out/): Mueller Clip Take-out is the most widely used cable take-out / electrtode on seismic cable, ERT cable and other earth resistivity survey cables.
- [Kooter Take-Out TKO](https://www.seis-tech.com/kooter-take-out-tko/): Kooter take-out tko is a waterproof type cable take-out which is widely used on seismic cables and geophone land streamers.

## Pages
- [Thank you](https://www.seis-tech.com/thank-you/): Thank you! Your message was sent successfully. We will contact with you within 48 hours.
- [Certificate](https://www.seis-tech.com/certificate/): Seis Tech takes pride in our commitment to quality and excellence. We constantly strive to improve our efficiency and meet the highest standards of quality. Our management and employees are committed to following all company rules and regulations. Our development process is wideyrecognized and recognized that meets the stringent requirements of independent certification bodies.
- [What is VES, ERT, IP and SP Electrical Resistivity](https://www.seis-tech.com/what-is-ves-ert-ip-and-sp-electrical-resistivity/): Electrical resistivity can be an efficient option to map the subsurface conditions when you need a non-destructive investigation technique or want improved data coverage compared to traditional, point-by-point, intrusive methods(such as drilling or digging). Measurements can be straightforward soundings(just measuring resistivity against depth), 2D profiles or even 3D volumes. Data can be collected on land, in water, or within boreholes and can be single measurements or repeated readings to fulfill a need for monitoring of changes in survey.
- [Message](https://www.seis-tech.com/product-message/)
- [ABOUT US](https://www.seis-tech.com/about-us/): Seis Tech is a professional supplier for velocity geophones, piezo sensor hydrophones, ert cables, geophone spread cables and related coaxial connectors. Mostly, the geophones, hydrophones and cables supplied by Seis Tech have been qualified with RoHS 2.0 and Seis Tech has also been certified with ISO 9001:2015 QMS, ISO 14001:2015 EMS and ISO 45001:2018 OHSMS.
- [CONTACT US](https://www.seis-tech.com/contact-us/): Notice: JavaScript is required for this content. 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
- [F.A.Q](https://www.seis-tech.com/f-a-q/)
- [HOME](https://www.seis-tech.com/)
- [SUPPORT&DOWNLOAD](https://www.seis-tech.com/supportdownload/)
- [PRODUCTS](https://www.seis-tech.com/products/)

## Faq
- [Analog Geophones vs Digital Geophones: What Are the Differences and When Does It Matter?](https://www.seis-tech.com/faq/analog-vs-digital-geophones-comparison/): Discover the key differences between analog (moving-coil) and digital (MEMS) geophones. Learn how to choose the right seismic sensor for land acquisition, balancing cost, broadband recording, and noise reduction.
- [How to install geophones for vibration monitoring of structures?](https://www.seis-tech.com/faq/geophone-installation-structural-vibration-monitoring/): Learn the best practices for installing geophones in structural vibration monitoring. Discover mounting methods, coupling techniques, and sensor placement.
- [What is a multi-channel geophone system?](https://www.seis-tech.com/faq/what-is-a-multi-channel-geophone-system/): Discover what a multi-channel geophone system is, how it works, and its key applications in seismic exploration, near-surface geophysics, and engineering geology.
- [How High Sensitivity Geophones Turn Traffic Noise into Subsurface Maps](https://www.seis-tech.com/faq/high-sensitivity-geophones-for-urban-mapping/): Learn how high-sensitivity geophones turn traffic noise into 3D subsurface maps using ambient noise interferometry.
- [What to Look for in a Research-Grade Geophone](https://www.seis-tech.com/faq/research-grade-geophone/): What to look for in a research grade geophone: natural frequency, sensitivity, damping, noise floor, and supplier credentials.
- [How Do High-Sensitivity Geophones Protect Semiconductor Fabs from Micro-Vibrations?](https://www.seis-tech.com/faq/high-sensitivity-geophones-semiconductor/): High-sensitivity geophones detect micro-vibrations to protect EUV lithography tools in semiconductor fabs. Learn how they monitor, analyze, and enable active vibration isolation for high yield.
- [Are Bottom-Towed Seismic and Bottom-Towed Resistivity the Same Thing?](https://www.seis-tech.com/faq/bottom-towed-seismic-vs-bottom-towed-resistivity/): Are bottom-towed seismic and resistivity the same? Discover the key differences between acoustic structural imaging and electromagnetic fluid detection.
- [What Is Bottom Towed Resistivity?](https://www.seis-tech.com/faq/what-is-bottom-towed-resistivity/): Discover how bottom towed resistivity works in marine CSEM surveys. Learn its applications in offshore hydrocarbon, gas hydrate, and subsea freshwater detection.
- [What Is Bottom Towed Seismic?](https://www.seis-tech.com/faq/what-is-bottom-towed-seismic/): Learn what bottom-towed seismic acquisition is, how ocean-bottom cables (OBC) and nodes (OBN) work, and their key advantages for marine geohazard surveys.
- [Why is the difference between 1Hz and 2Hz so important for seismic acquisition?](https://www.seis-tech.com/faq/1hz-vs-2hz-geophone-seismic-acquisition/): For decades, the geophysical industry focused almost entirely on increasing high-frequency content to achieve better image resolution. However, over the last twenty years, there has been a significant shift in interest toward the low-frequency end of the spectrum. While it might seem like a small detail, the difference between 1 Hz and 2Hz represents a major technical and financial hurdle in seismic data acquisition.
- [How does Geophones Enable Long-Term Reservoir Monitoring?](https://www.seis-tech.com/faq/geophones-for-reservoir-monitoring/): Geophones for reservoir monitoring provide high-sensitivity 4D seismic data. Learn how these sensors enable long-term reservoir management and optimization.
- [Is Distributed Acoustic Sensing (DAS) the End of the Geophone?](https://www.seis-tech.com/faq/das-vs-geophones-comparison/): Is Distributed Acoustic Sensing (DAS) the end of geophones? Compare DAS vs. geophones to understand why both technologies are vital for seismic acquisition.
- [Can Hydrophones Reveal Deep Ocean Temperature Shifts?](https://www.seis-tech.com/faq/hydrophones-measure-deep-ocean-temperature/): Hydrophones reveal deep ocean temperature shifts by analyzing sound speed variations. Explore how acoustic thermometry enables precise climate monitoring.
- [What is the difference between a contact microphone and a geophone?](https://www.seis-tech.com/faq/contact-microphone-vs-geophone/): Discover the key differences between a Contact Microphone vs Geophone. Learn how these vibration sensors work and which fits your recording needs best.
- [How Does HTI-96 Hydrophone Perform Compared with Other Research-Grade Models?](https://www.seis-tech.com/faq/hti-96-hydrophone-vs-other-research-grade-models/): The HTI-96-Min hydrophone strikes a solid balance of performance, toughness, and affordability, making it a go-to for underwater research.
- [What Is Geophone Element Testing?](https://www.seis-tech.com/faq/what-is-geophone-element-testing/): Learn why testing is critical for seismic,vibration, and structural monitoring applications.
- [How to Use a Geophone with Raspberry Pi and an ADC](https://www.seis-tech.com/faq/how-to-use-a-geophone-with-raspberry-pi-and-an-adc/): Learn how to connect a geophone to a Raspberry Pi using an ADC.This guide covers hardware wiring, signal amplification, Python code, and signal processing techniques for vibration monitoring.
- [Advantages and Limits of Passive Geophones](https://www.seis-tech.com/faq/advantages-and-limits-of-passive-geophones/): Explore the key benefits and limits of passive geophones in seismic surveys.
- [How Do Hydrophones Enhance the Capabilities of Variable Depth Sonar Systems?](https://www.seis-tech.com/faq/how-do-hydrophones-enhance-the-capabilities-of-variable-depth-sonar-systems/): How hydrophones enhance Variable Depth Sonar (VDS) systems, improving underwater detection and anti-submarine warfare.
- [How Low-Frequency Geophones Help?](https://www.seis-tech.com/faq/how-low-frequency-geophones-help/): Low-frequency geophones function through electromechanical transduction principles.
- [What is The Role of Hydrophones in Seismological Research？](https://www.seis-tech.com/faq/what-is-the-role-of-hydrophones-in-seismological-research/): Hydrophones detect seismic waves underwater, aiding in the study of earthquakes, volcanic activity, and oceanic tectonics. They enhance our understanding of the Earth’s structure and support early-warning systems.
- [What is Hydrophone Sensitivity and How is it Measured?](https://www.seis-tech.com/faq/what-is-hydrophone-sensitivity-and-how-is-it-measured/): Hydrophone sensitivity measures its ability to detect weak underwater sounds, expressed in volts per microPascal (V/µPa). It is crucial for applications such as marine biology, sonar systems, and seismic research.
- [How Can MEMS Piezo Hydrophones Enhance Sensitivity in Underwater Applications?](https://www.seis-tech.com/faq/mems-piezo-hydrophones-underwater-sensitivity/): Learn how MEMS piezoelectric hydrophones are revolutionizing underwater sensing with their high sensitivity, compact size, and versatile applications in marine biology, seismic monitoring, and underwater communication.
- [What is the difference between MASW and downhole seismic？](https://www.seis-tech.com/faq/the-difference-between-masw-and-downhole-seismic/): Compare MASW and downhole seismic testing for subsurface investigations, focusing on methods, applications, and advantages.
- [What Are Geophysical Surveys?](https://www.seis-tech.com/faq/what-are-geophysical-surveys/): Geophysical surveys are utilizing a range of physical principles, including seismic, magnetic, gravitational, and electrical methodologies, to detect anomalies and gather data about underlying structures, natural resources, and geotechnical conditions.
- [Key Differences Between Seismic Reflection and Seismic Refraction](https://www.seis-tech.com/faq/key-differences-between-seismic-reflection-and-seismic-refraction/): Seismic reflection and seismic refraction are two primary seismic methods used to explore the Earth's subsurface, especially in the petroleum industry.
- [What are the mainstream seismic methods?](https://www.seis-tech.com/faq/what-are-the-mainstream-seismic-methods/): Seismic Tomography provides high-resolution 2D or 3D images of seismic velocities between boreholes. The method is used to delineate geological structures, to map cavities and weak zones and to specify mechanical soil and rock properties.
- [What is Spurious Frequency?](https://www.seis-tech.com/faq/what-is-spurious-frequency/): Spurious frequency is usually specified by manufacturers, but users often know little about it. So, what is spurious frequency, and how does it affect seismic data?
- [What Does A Geophone Measure?](https://www.seis-tech.com/faq/what-does-a-geophone-measure/): The geophones can be deployed on the surface or near geothermal reservoirs in wells to gather detailed data.
- [What is The Differences Between Accelerometers & Geophones?](https://www.seis-tech.com/faq/differences-between-accelerometers-and-geophones/): In the realm of seismic monitoring and exploration, two indispensable instruments take center stage: accelerometers and geophones.
- [What is apparent resistivity?](https://www.seis-tech.com/faq/what-is-apparent-resistivity/): At the heart of this technique lies apparent resistivity, a pivotal parameter offering essential insights into the makeup and configuration of subsurface layers.
- [How to use seismic technologies in oil and gas exploration?](https://www.seis-tech.com/faq/seismic-technologies-in-oil-and-gas-exploration/): The oil and gas industry has extensively relied on seismic exploration technology, demonstrating nearly a century of global usage that attests to its reliability.
- [What is Seismic Waves? An In-depth Analysis of Earth’s Vibrations](https://www.seis-tech.com/faq/what-is-seismic-waves/): During an earthquake, released energy manifests as seismic shock waves, inducing Earth vibrations—aptly named seismic waves.
- [What are the relations between seismometer and geophone?](https://www.seis-tech.com/faq/what-are-the-relations-between-seismometer-and-geophone/): The geophones embedded in the integrated seismometer shall meet the following requirements:
- [What is a MASW?](https://www.seis-tech.com/faq/what-is-a-masw/): MASW is a shortcut of Multichannel Analysis of Surface Waves. The MASW method deals with surface waves in the lower frequencies(e.g.,1-30Hz) and uses a much shallower depth range of investigation ranges from a few meters to a few tens of meters. MASW deals with relatively lower frequencies and shallower investigation depth ranges than do conventional high resolution seismic methods. It provides shear-wave velocity information of near-surface materials in a highly cost-effectively manner. Because of the relatively significant value of this information in most geotechnical engineering projects and also because of the relatively simple in-field operation and data processing, it is gaining popularity among engineering communities.
- [How to use seismic methods?](https://www.seis-tech.com/faq/how-to-use-seismic-methods/): When you have a need for non-destructive investigation technique for subsurface conditions, seismic methods can be a good alternative to provide a more comprehensive image compared to traditional intrusive methods such as digging and drilling. Seismic methods record the movement of vibrations through the round with their speed and path telling us something about the structure, strength and stability of the subsurface. All seismic systems require four factors, a source(either user-generated or naturally occurring vibrations), a sensor to detect the seismic surveys as they move through the subsurface, a cable to transmit seismic signal and a seismograph to record the motion for later analysis.
- [How to select a suitable geophone for certain seismic method?](https://www.seis-tech.com/faq/select-suitable-geophone-for-seismic-method/): Geophones are used in seismic investigations to transform the vibration in the ground into a voltage. The geophones are analogue sensors, with a spring-mounted wire coil moving past a magnet. This creates the electrical signal with is recorded by a seismograph such as the ABEM Terraloc, PASI GEA 24, Geode 24 or DAQ Link 3 system.
- [What is VES, ERT, IP and SP Electrical Resistivity ?](https://www.seis-tech.com/faq/what-is-ves-ert-ip-sp-electrical-resistivity/): Electrical resistivity sends an electrical current into the ground and maps the resistance against that flow of the current. The resistance can be converted to resistivity, a property used to predict the composition, structure or strength of the underlying materials.
- [What is a Resistivity Cable?](https://www.seis-tech.com/faq/what-is-a-resistivity-cable/): Resistivity cable is used for electrical resistivity sounding. It is a specialized cable designed for electrical resistivity tomography surveys.
- [What is a Seismic Geophone?](https://www.seis-tech.com/faq/what-is-a-seismic-geophone/): Seismic geophone is a device used in surface seismic acquisition, both onshore and on the seabed offshore, which detects ground velocity produced by seismic waves and transforms the movement into electrical impulses. Geophones detect motion in only one direction. Conventional seismic surveys on land use one geophone per receiver location to detect motion in the vertical direction or horizontal direction. Three mutually orthogonal geophones are typically used in combination to collect 3C seismic data. Hydrophones, unlike geophones, detect changes in pressure rather than motion.
- [What is a Seismic Land Streamer?](https://www.seis-tech.com/faq/what-is-seismic-land-streamer/): A seismic land streamer is an array of geophones designed to be towed along with the ground. It is a receiver array specially designed for land seismic surveys. A land streamer is suitable for MASW, refraction, reflection and surface-wave surveys which make the field survey easier and higher productivity without compromising data quality.
- [What is an ERT Cable?](https://www.seis-tech.com/faq/what-is-ert-cable/): An ERT cable means a cable for electrical resistivity tomography. It is a specialized cable designed for electrical resistivity tomography surveys. ERT cable will work partnering with resistivity meter in water surveys, geological stratigraphy, landside studies, groundwater contaminations, mining detecting, archaeology, subsoil cavities detection, etc.
- [What’s the difference on OBC and OBN Seismic Exploration?](https://www.seis-tech.com/faq/difference-on-obc-and-obn/): At present all countries have shifted the focus of oil and gas exploration to Ocean. As the main means of oil exploration in shallow sea areas, OBC (Ocean Bottom Cable) seismic exploration and OBN(Ocean Bottom Node) seismic exploration have been rapidly promoted and applied in seismic exploration for shallow sea by relying their flexible layout characteristics. However, OBC and OBN have much difference in some situations. This FAQ is talking about what’s the difference on OBC and OBN Seismic Exploration?
- [Is there any necessity to add some parameters of seismic geophone?](https://www.seis-tech.com/faq/add-parameters-of-seismic-geophone/): With the development of geophysical prospecting, especially to meet the needs of high-precision prospecting, high-density acquisition, broadband acquisition, single-point acquisition and low-cost acquisition. The parameters of seismic geophone data should be added to the parameters of the geophone, including but not limited to. Develop displacement geophones, add new performance indicators, perform some physical inspections on classification performance indicators, etc. By adding these parameters of seismic geophone, it can help customers to accurately select the geophone type, and to improve the quality of seismic data acquisition and reduce the quality. Is there any necessity to add some parameters of seismic geophone?
- [What is Shallow Seismic Exploration?](https://www.seis-tech.com/faq/what-is-shallow-seismic-exploration/): Shallow seismic exploration is an engineering geological and geophysical exploration that uses the characteristics of seismic wave propagation in different rocks and soils to detect shallow geological structures (usually tens to hundreds of meters) and determine the physical and mechanical parameters of rock and soil. As per different tasks, purposes and different geological conditions, different exploration methods can be applied.
- [What’s the Developing Direction of Seismic Geophone?](https://www.seis-tech.com/faq/development-direction-of-seismic-geophone/): The development direction of seismic geophone of broadening the frequency revolves around how to obtain lower frequency and higher frequency components.
- [What is Schlumberger Array?](https://www.seis-tech.com/faq/what-is-schlumberger-array/): The Schlumberger array is an array where four electrodes are placed in a line around a common midpoint. The two outer electrodes, A and B, are current electrodes, and the two inner electrodes, M and N, are potential electrodes placed close together.
- [What is Passive Seismic?](https://www.seis-tech.com/faq/what-is-passive-seismic/): Passive seismic is detection of natural low frequency earth movements, with the purpose of discerning geological structure and locate underground resources.
- [How to use seismic technologies in oil and gas exploration?](https://www.seis-tech.com/faq/use-seismic-technologies-in-oil-and-gas/): How are seismic technologies used in finding oil and gas today?What we use in exploring Earth’s energy resources is called reflection seismology.
- [What is Seismic Survey?](https://www.seis-tech.com/faq/what-is-seismic-survey/): A: The seismic survey is one form of a geophysical survey that aims at measuring the earth’s (geo-) properties by means of physical (-physics) principles such as magnetic, electric, gravitational, thermal, and elastic theories. It is based on the theory of elasticity and therefore tries to deduce elastic properties of materials by measuring their response to elastic disturbances called seismic (or elastic) waves.Seismic survey is the most important method in geophysical survey and the most effective way to solve oil and gas survey problems.
- [What is P Wave?](https://www.seis-tech.com/faq/what-is-p-wave/): P wave is body waves that propagate through the planet. P-waves travel 60% faster than S-waves on average because the interior of the Earth does not react the same way to both of them.
- [Seismic Refraction and Geophone](https://www.seis-tech.com/faq/seismic-refraction-and-geophone/): Seismic refraction is a geophysical principle governed by Snell's Law. Used in the fields of engineering geology, geotechnical engineering and exploration geophysics.
- [What is a Hydrophone?](https://www.seis-tech.com/faq/what-is-a-hydrophone/): A piezo hydrophone is a kind of underwater microphone designed to monitor underwater noise. A typical peizo hydrophone works by detecting pressure changes in the surrounding environment and converting sound waves into voltage. The speed and distance of the sound wave propagating in the water is proportional to the pressure change, which will determine the nature of the electrical output transmitted.
- [Geophone in Seismic Survey](https://www.seis-tech.com/faq/geophone-in-seismic-survey/): The geophone in seismic survey is the instrument used to transform seismic energy into an electrical voltage. It ordinarily responds to only on the component of the grounds displacement, velocity, or acceleration associated with the passage of a seismic wave. For a seismic reflection survey with P-waves, this is the vertical component.
- [Basic Information of Geophone](https://www.seis-tech.com/faq/basic-information-of-geophone/): A geophone is a device that converts ground movement into voltage, which can be recorded and analyzed to interpret subsurface structures and monitor seismic activity. ​
- [4.5Hz Geophone in Multichannel Surface Survey](https://www.seis-tech.com/faq/4-5hz-geophone-in-surface-survey/): Multichannel analysis of surface waves geophones is designed to respond to a certain frequency (e.g.4.5Hz,8Hz,14Hz and 40Hz). While a 4.5Hz geophone is used for most depth. Multichannel analysis of surface waves seismic survey that needs to cover a long linear path quickly may utilize a land streamer.

## Download PDF
- [Portable Seismic Cables](https://www.seis-tech.com/download_pdf/portable-seismic-cables/)
- [Connector for IO System Four Scorpion](https://www.seis-tech.com/download_pdf/connector-for-io-system-four-scorpion/)
- [Marine Resistivity Cable for Underwater, Shallow Sea and Borehole ERT Survey](https://www.seis-tech.com/download_pdf/marine-resistivity-cable-for-underwater-shallow-sea-and-borehole-ert-survey/)
- [Profile of 3C Geophone 4.5Hz](https://www.seis-tech.com/download_pdf/profile-of-3c-geophone-4-5hz/)
- [Drawing for Female 55 pin Connector for DAQ System](https://www.seis-tech.com/download_pdf/drawing-for-female-55-pin-connector-for-seismic-source-daq-system/)
- [Assorted Geophone Cables for Land, Transition Zone and Shallow Water](https://www.seis-tech.com/download_pdf/assorted-geophone-cables/)
- [Technical Drawing for Banana Pin Insert for KCL Connector](https://www.seis-tech.com/download_pdf/technical-drawing-for-banana-pin-insert-for-kcl-connector-2/)
- [32 Pin Male Connector for ABEM Imaging Cable](https://www.seis-tech.com/download_pdf/32-pin-male-connector-for-abem-imaging-cable/): 32 pin male connector (18-32P) for ABEM imaging cable and ERT cable.
- [Layout and Wiring for Horizontal Geophone with Mueller Clips](https://www.seis-tech.com/download_pdf/layout-and-wiring-for-horizontal-single-geophone-with-mueller-clips/)
- [Layout and Wiring for 3 Channel 4Hz Hydrophone Cable Streamer](https://www.seis-tech.com/download_pdf/layout-and-wiring-for-3-channel-hydrophone-4hz-cable-streamer/)
- [Wiring Diagram for ERT Cable 18 Electrodes for IRIS SYSCAL PRO Instruments](https://www.seis-tech.com/download_pdf/wiring-diagram-for-ert-cable-18-electrodes-for-iris-syscal-pro-instruments/)
- [Drawing and Wiring Diagram for ABEM ERT Cable with Total Length 165m](https://www.seis-tech.com/download_pdf/drawing-and-wiring-diagram-for-abem-32-channel-ert-cable-with-total-length-165m/)
- [Diagram and Wiring for 24 Channel Hydrophone Cable Streamer](https://www.seis-tech.com/download_pdf/diagram-for-24-channel-hydrophone-cable-streamer/)
- [Diagram for 24 Channel Split Type Refraction Cable with KCL Take-out](https://www.seis-tech.com/download_pdf/diagram-for-24-channel-split-type-refraction-cable-with-kcl-take-out/)
- [Resistivity Cable Electrode Take-out Selection](https://www.seis-tech.com/download_pdf/resistivity-cable-electrode-take-out-selection/)
- [Drawing for Bendix 61 Pin (PT06A-24-61S) Equivalent End Connector](https://www.seis-tech.com/download_pdf/drawing-for-bendix-61-pin-pt06a-24-61s-equivalent-end-connector/)
- [Diagram for 20DX 10Hz Multi Land Geophone String](https://www.seis-tech.com/download_pdf/diagram-for-20dx-10hz-multi-land-geophone-string/)
- [Profile of EPS Portable Seismometer for Passive Seismic Survey](https://www.seis-tech.com/download_pdf/profile-of-eps-portable-seismometer-for-passive-seismic-survey/)
- [Structure for 3-directional Geophone 2Hz and 4.5Hz](https://www.seis-tech.com/download_pdf/structure-for-3-directional-geophone-2hz-and-4-5hz/)
- [Wiring for 3 Component Geophone 4.5Hz with Mueller Clips](https://www.seis-tech.com/download_pdf/wiring-for-3-component-geophone-4-5hz-with-mueller-clips/)
- [Drawing for FM4 ST+ Equivalent End Connector](https://www.seis-tech.com/download_pdf/drawing-for-fm4-st-equivalent-end-connector/)
- [Drawing for FM4 WPSR Equivalent End Connector](https://www.seis-tech.com/download_pdf/drawing-for-fm4-wpsr-equivalent-end-connector/)
- [Drawing for Amphenol 55 Pin Equivalent Male (22-55P) Field Installable Connector](https://www.seis-tech.com/download_pdf/drawing-for-amphenol-55-pin-equivalent-male-22-55p-field-installable-connector/)
- [Drawing for Amphenol 55 Pin Equivalent Female (22-55S) Field Installable Connector](https://www.seis-tech.com/download_pdf/drawing-for-amphenol-55-pin-equivalent-female-22-55s-field-installable-connector/)
- [Drawing for Cannon NK27 Male Socket for Panel Mounting](https://www.seis-tech.com/download_pdf/nk27-male-socket-for-panel-mounting/)
- [Drawing for Cannon NK27 Equivalent Male Refraction Cable Connector](https://www.seis-tech.com/download_pdf/drawing-for-nk27-style-male-refraction-cable-connector/)
- [Drawing for Cannon NK27 Equivalent Female Refraction Cable Connector](https://www.seis-tech.com/download_pdf/drawing-for-nk27-style-female-refraction-cable-connector/)
- [Geophone Connector Pin Assignments for Geode and Strata Visor Systems](https://www.seis-tech.com/download_pdf/geophone-connector-pin-assignments-for-geode-and-strata-visor-systems/)
- [Vertical Marsh Geophone Case Assy](https://www.seis-tech.com/download_pdf/vertical-marsh-geophone-case-assy/)
- [Vertical Land Spike Geophone Case Assy](https://www.seis-tech.com/download_pdf/vertical-land-spike-geophone-case-assy/)
- [Vertical Land Tripod Geopone Case Assy](https://www.seis-tech.com/download_pdf/vertical-land-tripod-geopone-case-assy/)
- [Horizontal Land Tripod Geopone Case Assy](https://www.seis-tech.com/download_pdf/horizontal-land-tripod-geopone-case-assy/)
- [Wiring for 24 Channel and 48 Channel Seismograph](https://www.seis-tech.com/download_pdf/wiring-for-24-channel-and-48-channel-seismograph/)
- [Wiring for All NZ-Geode Connectors](https://www.seis-tech.com/download_pdf/wiring-for-all-nz-geode-connectors/)
- [Amphenol Cylindrical Connectors Applied in Geophysical Survey](https://www.seis-tech.com/download_pdf/amphenol-cylindrical-connectors-applied-in-geophysical-survey/)