| TY-DWJ-3A Microcomputer Induced Polarization Receiver has the ability to |
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measure multiple parameters including self-potential, primary potential, |
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polarizability and so on. It can be used not only for induced polarization survey |
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but also for resistivity survey. In addition to standard surface measurement, |
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TY-DWJ-3A also can be applied to borehole induced polarization measurement, which |
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makes this instrument quite different from general induced polarization |
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receivers. Furthermore, in combination with our TY-DUM-2 Multiplex Electrode |
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Converter,TY-DWJ-3A can be served as a high density resistivity surveying system. |
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| 2.Main Characteristics： |
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| • Strong anti-interference capability and high precision with digital filtering and signal amplification. |
| •Compensating self-potential, drift and electrode polarization automatically |
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| •Transient over-voltage protection. |
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| •Large color display, Chinese character keyboard, Chinese menu |
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| •Measured parameters and observational curves can be displayed on the screen directly and concisely. |
| •Ability to measure and store multiple parameters such as self-potential, primary |
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| potential, output current (under synchronous mode ), apparent resistivity, |
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| apparent polarizability, half decay time, degree of decay, degree of deviation, |
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| induction number and so on. |
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| •Power-cut protection: 1MB data can be stored and not to be lost when closedown |
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| or changing battery. |
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| •All sealed constitution: water-proof and dust-proof design, long operational life |
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| span. |
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| 3.Technical Specifications |
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| •Primary Potential Measurement: Resolution: ± 1μV ; Range: 20V (Max) |
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| •Current Measurement: Resolution: 1mA; Range: 20A (Max) |
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| •Downhole Measurement: Depth count resolution: 0.01m; Range: 99.99m (Max) |
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| •Polarizability Measurement: Resolution 0.001% |
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| •Measuring Accuracy: ±1%±1digit for voltage, current and apparent polarizability |
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| •Input Impedance: ≥100MΩ |
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| •Noise Reduction: better than 80dB for 50Hz power frequency |
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| •Operating Temperature: -10℃～50℃ |
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| •Operating Humidity: 95% RH (Max) |
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