FIELD: check of lines of gas transport. SUBSTANCE: device is provided with at least one gas-jet whistle used as source of signal from cleaning tool to be detected. According to other version, device may be additionally provided with converter for converting the audible signal into electrical signal; this converter is connected with digital-to-analog converter, frequency selective amplifier, detector and indicator; converter is also provided with device adjusting the signal transfer coefficient which includes digital-to-analog converter and additional indicator showing the state of this adjustment. EFFECT: enhanced efficiency. 7 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR DETECTION OF PASSAGE OF MAGNETIC MATERIAL OBJECTS INSIDE PIPE LINE | 1995 |
|
RU2097649C1 |
| DEVICE TO CONTROL CLEANING TOOL PASSING IN PIPELINE | 1992 |
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| PORTABLE DEVICE FOR DETECTING AND LOCATING SUBSURFACE METAL OBJECTS | 2002 |
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| GAS ANALYZER | 1992 |
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| SERVO ANALOG-TO-DIGITAL CONVERTER | 0 |
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SU1280692A1 |
| ANALOG-TO-DIGITAL CONVERTER | 0 |
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| RANDOM PROCESS IDENTIFIER | 0 |
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| DEVICE FOR TESTING CHARACTERISTICS OF DIELECTRIC MATERIALS | 1990 |
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| DEVICE FOR MEASUREMENT OF SURFACE PHOTO-EMF OF SEMICONDUCTORS | 1986 |
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SU1433333A1 |
