Geophysical Equipment For Underground Wa

Instroduction:WDJD-4 Multi-function Digital DC Resistivity/IP Meter is our new generation model with 32 single-chip and 24 bit A/D technology on the basis of years of experience of design and manufacture,which could carry on Res and IP survey at the same time. It features multiple functions, high accuracy, fast speed, high reliability and excellent expandability. Measured data of WDJD-4 can be processed by other multi-electrode resistivity software, which makes the interpretation more convenient.The single WDJD-4 can conduct general electrical resistivity/IP survey with twist pair wire, iron electrodes and power source. If WDJD-4 is used together with WDZJ-4 multiplex electrode switcher multi-electrode cable, electrodes and power source, it can conduct not only general electrical resistivity/IP survey but also multi-electrode 2D Resistivity imaging.Underground water inspectionEngineering geology inspecting as dam base exploration and floodMetal and Non-metal source explorationCity geophysical explorationRailway and bridgeTechncial Specification:Receiving partVoltage channel: ± 6 VSurvey precision: if Vpâ?¥10 mV then ± 5â?° ± 1 LSB, if Vp < 10 mV, then ±1% ± 1 LSBInput impedance: â?¥50MΩApparent polarizability precision: ±1% ± 1 LSBSP compensation range: ±1 VCurrent channel: 5 A, survey precision: if IPâ?¥ 10mA then ± 5â?° ± 1 LSB, if IP < 10 mA, then ±1% ± 1 LSSuppression: â?¥80dB for 50Hz industrial frequencyTransmitter partVoltage maximum: 900VCurrent maximum: 5A( when voltage â?¤ 900V )Pulse width: 1ï½? 60s, duty ratio 1:1OtherOperating temperature: -10â??ï½?50â??, humidity: 95 %RHMemory temperature: -20â??ï½?50â??Instrument power: eight D size batteries (or same specs nickel-cadmium battery)Complete appliance current: â?¤ 55mAWeight: â?¤ 7 KgDimensions (LÃ?WÃ?H): 310mm X 210mm X 210mmStandard configuration List of WDJD-4 undergound water finderNo.DeatilsQty1WDJD-4 Mianframe1 Set2USB Communication Line1 Set3Charger1 Pc412V Power Input Line1PC5Instrument backpack1PC6Windows Software U Disk1PC7Operational Manual1PC8Unpolarized Electrodes1Pair9Iron Electrodes10PCS

Technical specifications:Receiving partVoltage channel: ±32V24 bitA/DAccuracy: as Vp5mV, ±0.2% ±1 character as 0.1mVVp5mV, ±1% ±1 character Input impedance: 50 Apparent polarization accuracy: ±1±1character SP compensation range: ±10V Current channel: 6A24bitA/DMeasurement accuracy: as Ip5mA, ±0.2% ±1character as 0.1mA?¤Ip5mA, ±1% ±1character As for 50Hz industrial interfacecommon and different modedepression is better than 80dBTransmitter part:Maximium power: 7200W Maximium supply voltage: ±1200V Maximium supply current: ±6A Supply current width :160s, duty rate 1:1OtherWorking temperature: -10+50,95RH Storge temperature: -20 +60 Power supply: builtin 7.4V4Ahor outside 12V, lasting for 20h Main unit port: A, B, M, N, DC high voltage, outside battery, 2 cable port, RS-232, blue tooth Weight: 4kg Size : 270mm246mm123mm

Technical specificationsReceiving partvoltage channel: ±32V24 bitA/D)accuracy: as Vp5mV, ±0.2% ±1 character as 0.1mV?¤Vp5mV, ±1% ±1 characterInput impedance: 50©Apparent polarization accuracy: ±1±1characterSP compensation range: ±10VCurrent channel: 6A24bitA/DTransmitter partmaximium power: 7200Wmaximium supply voltage: ±1200Vmaximium supply current: ±6ADeep geophysical equipment groundwater detector 1D IP sounding:ID AB/2(M)MN/2(M) K11.50.512.56637122.50.523.56194533.50.537.69911244.50.554.97787155.50.540.5678

FeaturesPortability and flexibilitycombining transmitter and receiver together, small and light. Real one machine and multi-functionvoltage and current range and small signal accuracy improved greatly, it is fitted for rock sampling tester, large-power IP receiver, nomal resistivity tool, IP, water finder, 2D and 3D high-density electrical tool etc.. Multi-parameter measurement, wide applicationvoltage, current, apparent resitivity, SP, apparent chargability, metal factor, half life, attenuation, IP ratio, departure, IP spectrum. Blue technique, wireless remote controlPocket PC controlled central unit by Bluetooth technique, remote control is effective within 10 m. All parameters and measurement display can be fulfilled easily wirelessly. Pocket PC control, Powerful functionall Chinese pocket PC support the man machine interface and sampling control, parameters setting, data display and storge, graph plot, image making, Field works are very easy.Extendable easilydata sampling and storage are all controlled by pocket PC. Data management is easy and software is easy to be extended. Powerful pocket PCbeside the high hardware configuration, pocket PC is installed with many utility software. User can arrange the date, navigate the web via wireless net, and use WORD, EXCEL, PowerPoint, and Media Player for office and amusement. With double high-density resistivity cable port, cross-hole resistivity can be carried out without medium switcher. Measurement is concise and easy. Super wide range, high accuracyvoltage is as high as 64Vp-p, small signal measurement accuracy is high voltage is less than 0.1mV and current is less 0.1mA with ±1% accuracyï¼?. Tool is fitted for high resistivity region; high-density can achieve good results. Complete anti-interface techniqueuse multi-stage filter and signal enhancement technique, integrate anti-interface funation, accuracy is high. Auto SP, shift and electrode compensation with range as high as ±10V. The panel has "infinite"pole for pole-pole and dipole-pole measurement. During dipole-pole measurement, sA,sB, and s can be measured automatically with high efficiency.Receiver has over-voltage over- current and AB open protection ability. Ground resitivity checkAB pole and MN pole can be checked at any time, easy and practically. Dignosis program can find the trouble with the tool quickly and accurately. Imported air proof box is water-proof, dust-proof, and long life. Flexiable control choicethe tool can be controlled with note PC for field work.

GD-10 series is a new electrical geophysical exploration system with highly engineered & cutting edge technology with a revolutionary change. It is promoted to market focusing the best solution to meet emerging technological advancements, cost affordability, flexibility in field practices, the greatest accuracy in geo-electrical exploration, the enduring sustainability for a basic user to a progressive researcher. GD-10 series supports1D VES, 2D ERI and 3D ERT Resistivity/IP measurement, which are the versatile geophysical method, apply for a broad range of applications, as groundwater and mineral exploration, infrastructure site investigations and so on. GD-10 series including Senior, Supreme 2D, Supreme 2D Plus, Supreme 3D and Supreme 3D Plus with different configurations. Power: 600V/1200Vp-p, 4A, 2400W Function; * SP(self-potential) survey & 1D Resistivity VES survey Application : * Underground water exploration * Pollution monitoring and mapping * Salinity control * Depth-to-rock determination * Weathered bedrock localization * Depth and thickness of aquifers * Civil engineering * Archaeology Feature: * Modular Design: Hardware, Software and License are separate entity. It supports online upgrade for more function. * Receiver and Transmitter designed in one hardware unit. * USB serial interface enables the instrument to communicate with computers for upgrade or data manage. * Receiver supports transient over-voltage protection for input voltage; transmitter supports protections of over-voltage, over-current, AB open-circuit, reverse connect. * Real-time on-side measuring data evaluation. * 8GB storage capacity for data, including measuring parameters (voltage, current, resistivity, relative error, SP, array constant, measuring point and so on), device parameters, and project parameters.

Depth of Investigation v 400 meters a. Transmitter 1) Constant Current Selected automatically depending on ground conditions Max. Current 500mA Min. Current 1mA 2) Voltage (Max) 500 V (1000 Vpp) 3) Power 40W b. Amplifier Voltage Measurement Input Impedance 10 M Ohm Input Range 0-200V Precision + 0.05 mV Noise Rejection 95 dB at 50-60 Hz c. Resistance Measurement Apparent R Range m Ohm, Ohm, K Ohm Apparent R Precision 0.02 m Ohm at 500 mA d. System Data Cycle time 12 seconds Accuracy 2% Diagnostic display 9 codes Temp. Range 0 v 50 degree c e. Power Source 12 Volt, 12 Ah Rechargeable Battery Measuring capacity 2000 readings at 20 mA 200 readings at 500 mA f. Weight 12.5 Kg g. Dimensions L 400mm X W 225mm X H 330mm Weight 20 kg of instrument Additional Accessaries 60-80 Kg.

Fd808 is an intelligent portable gamma spectrometer and dose rate measurement meter, which completely conforms to gb energy response. You can read nuclear radiation strength or exposure rate directly, also quantitatively calculate contents of radionuclide like uranium, thorium and kalium through spectrogram. It has good stability, simple operation, small volume, light weight etc. Application: Find underground water resource, mineral prospecting, environmental monitoring, geological survey, nuclear laboratory and so on. Function: gamma radiation total amount measurement Technical parameters: 1. gamma ray energy is less than 4mev 2. Sensitive thresholds: 350cps/8/h 3. Detector: 30mm 30mm crystal, resolution superior than 8% 4. Range: 0~9999 8sv/h 0~9999p 5. Stability: measuring error 7% (working 8 hours) 6. Accuracy: utmost deviation between measured absorbed dose rate and the value calculated is no more than 10% 7. Working condition: -10~+50, relative humidity is less than95% 8. Size: 360 mm*90 mm*220 mm 9. Weight: 2.0kg Features: 1. 16 bites adc up to1msps, to achieve mca design technology 2. Timing x-gamma spectra measurement to recognize nuclide and quantitative calculation of radionuclide content, as supplying dose rate 4. Timing clock, can store 2 million spectra data 5. Custom measuring time: automatic get dose result after measurement 6. Multilayer menu display, auto survey and manual survey mode to choose 7. Chargeable lithium battery to supply; indicates when voltage is low, low power consumption, fast and convenient 8. Power consumption: less than 160mw.