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Data processing and recording apparatus

  • US 4,414,633 A
  • Filed: 02/24/1981
  • Issued: 11/08/1983
  • Est. Priority Date: 11/17/1980
  • Status: Expired due to Fees
First Claim
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1. A gas flow rate recording apparatus comprising:

  • transducer means located in a gas supply line which provides an electrical signal having a pulse frequency representative of the magnitude of the parameter being measured, said parameter falling into one or a range of predetermined upper and lower limits and a plurality of data storage memories, each corresponding to one specific range of said parameter limits to record the incidence of a measurement of said parameter within the respective predetermined ranges.

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