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Apparatus for measuring the work performed by a gas compressor

  • US 4,676,095 A
  • Filed: 11/22/1985
  • Issued: 06/30/1987
  • Est. Priority Date: 11/22/1985
  • Status: Expired due to Fees
First Claim
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1. Apparatus for measuring the work performed by a gas compressor, said apparatus comprising:

  • said apparatus being operatively connected to an engine by a rotable component, said engine being powered by the same gas being compressed by the compressor,a first pressure sensor means for measuring the suction pressure of gas entering said compressor and generating a first signal representative of said suction pressure;

    a second pressure sensor means for measuring the discharge pressure of gas leaving said compressor and generating a second signal representative of said discharge pressure;

    means for generating a third signal representative of the speed of rotation of the rotable component of the compressor connected to said engine during a predetermined time interval;

    a calculating means arranged to receive said first, second and third signals and to calculate therefrom a fourth signal representative of the work performed by said compressor during said predetermined time interval;

    a photovoltaic power source capable of generating electrical energy upon exposure to light;

    means for connecting the power source to a power supply means for supplying said electrical energy to said first and second pressure sensor means and to said calculating means; and

    means for controlling the supply of power to the first and second pressure sensor means, said power control means being arranged to supply power to said first and second pressure sensor means for only a powered portion of each predetermined time interval and to leave said first and second pressure sensor means unpowered for the remainder of each predetermined time interval, said calculating means being arranged to read the values of said first and second signals only during the powered portion of each predetermined time interval.

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