Geophysical Terrameter 1D VES IP Meter Electrical Resistivity And Induced Polarization Exploration Instrument Resistivity Investigation Meter For Water And Mine
It's an geophysical exploration equipment for finding underground Water. The investigation of underground formations to understand the hydrologic cycle, know the groundwater quality, and identify the nature, number and type of aquifers. There are different groundwater explorationmethods. Surface geophysical method is one of the groundwater investigation methods.
Search for groundwater, solve the human and animal drinking water issue as well as industrial and agricultural water issue. Determine the hidden safety risk location in reservoir dam foundation and flood-control dyke, find faultage zone and collapse column, landslides, coal mining goaf, search for geothermal and other hydrological, engineering geological exploration.
Accessories made by our factory with 60-channel or 120-channel multiplex electrode switch, also can be used for multi-electrode resistivity survey system.
| Receiving Part |
| Measuring Voltage Range: -6000mV~+6000mV |
| Measuring Voltage Resolution: 0.01 mV |
| Measuring Voltage Accuracy: (at Vp>10mV)±5%, ±1 digit; (at Vp<10mV)±1%, ±1 digit |
| Measured Apparent Polarizability Accuracy: ±1%, ±1 digit |
| Measuring Current Range: 0~5000 mA |
| Measuring Current Resolution: 0.01 mA |
| Measuring Current Accuracy: (at Ip>10mA)±5%, ±1 digit; (at Ip<10mA)±1%, ± digit |
| Input Impedance: ≥50MΩ |
| Interference Suppression on 50Hz Power Frequency: Better than 80dB |
| Transmitter Part |
| Maximum Transmitting Power: 4500 W |
| Maximum Power Supply Voltage 900V |
| Maximum Power Supply Current: 5A |
| Instrument has over-voltage and over-current protection devices |
| Power Pulse Width: 1-60 seconds, Duty Cycle 1:1 |
Main Features
Multiple functions in One Machine: The instrument has three functions including long lead IP instrument, master of 2D resistivity imaging system, and medium-power short lead transmitting.
Small-sized, Light in weight: The instrument integrates receiver and transmitter together in the same cabinet, which can be used for measurement via apparent resistivity method and induced polarization method.
Various Measurement Parameters: Instrument can be applied in direct measurement and indication of primary potential Vp, spontaneous potential Vsp, power supply current I, apparent resistivity Ro, apparent polarizability Ms, half-decay time Th, degree of decay D, integrated IP parameters Zp, and degree of deviation R.
More flexible and convenient operating mode: Adopt all-digital automatic measurement, can execute automatic compensation for spontaneous potential, drift and electrode polarization. Use large screen LCD display, can directly display the arrangement of nine electrodes; directly input into pole arranging parameters with keyboard; measuring resistivity curve apparent polarizability curve, half-decay curve, etc. can be displayed directly when measurement of measuring point completes,
Data Interpretation is more convenient: The instrument can measure points on 4,800 survey data for storage. Each measuring point has 22 data, with RS-232 serial interface, through appropriate software the stored data can be directly transfer to the computer for digital interpretation of various methods.
Beautiful Instrument Apparent, Strong Structured: The aluminum chassis effectively enhance the electromagnetic shielding; adopts thin-film multi-layer sealed touch panel; multiple over-voltage, over-current automatic protection are set for internal power supply part, allowing the instrument to be suitable for various types of field environment.
Symmetrical quadrupole equal ratio sounding device is commonly used in the field, with MN∶AB = 1∶5 ~ 1∶3, bidirectional short pulse (duty cycle 1∶1) power supply, the power supply time is generally 5 ~ 10s, and the power supply is a 3kW generator with rectifier.
Generally, groundwater can be divided into pore water, fissure water and karst water according to different occurrence media. For a given area (a relatively small area), if time permits, the water content of the subsurface formation can be known by laying it out in profile directly using IP sounding
The induced polarization method is not affected by topographic fluctuation and electrical inhomogeneity of surrounding rock, and it can directly reflect the relatively rich water belt and its buried depth. There are many instruments and application parameters for IP water search. Shaanxi WuTanDui found closely associated with groundwater inspire potential decay properties, namely the formation water, the better the secondary field potential attenuation slower, so is the most mature IP parameters in the water rock characteristics of induced polarization apparent chargeability eta (s) and characterization of induced polarization of rock discharging speed of half failure when the rock water content increasing deviation is reduced, Decay curve when the moisture content increased the degree of deviation from "ideal straight line" smaller, because of the deviation degree of prospecting are briefly is a new effective parameters
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