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apparatus for detecting and prepare vibrations which are generated by means of pulse pressure in a pipeline crossing
apparatus for detecting and prepare vibrations which are generated by means of pulse pressure in a pipeline crossing
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机译:用于检测和准备通过管道中的脉冲压力产生的振动的设备
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摘要
A rugged and inexpensive sensor is disclosed for monitoring fuel injection characteristics such as injection pulse timing and width. A clamp is provided with hand grips and expandable jaws for quickly coupling to a fuel injection line. The jaws are biased into engagement with the line but are easily opened for releasing the clamp by urging the hand grips together. A transducer mounted on the clamp senses mechanical vibration caused by pressure pulsations in the line. The transducer is connected to circuitry for providing an output when the signal level from the transducer exceeds a threshold level. The sensor is self-compensating with the threshold level determined automatically from the maximum signal from the transducer. Therefore, different injection lines can be monitored with no manual adjustment of the clamp or circuitry even though the output of the transducer may vary from line to line.
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