FIELD: equipment for intrapipe test of long- length pipe-lines used in oil and gas industry. SUBSTANCE: intrapipe inspection tool includes body with equipment designed to measure, process and store measurement data. Equipment incorporates test transmitter sensitive to diagnostic parameter of pipeline, amplifier, analog-to-digital converter, converter of digital data and storage circuit of digital data connected in series. Equipment includes adjustable controller of range of analog-to-digital conversion of amplitudes of electric pulses from transmitter, output of amplifier is connected to input of analog-to-digital converter through range controller. Range controller incorporates circuit measuring level of noise and controllable voltage former connected in series. Input of circuit measuring level of noise is connected to output of amplifier or analog-to-digital converter, output of voltage former is connected to input of analog-to-digital converter. EFFECT: increased length of tested section of pipe-line in process of one diagnostic run. 12 cl, 8 dwg
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