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Apparatus for digital calibration of detachable transducers

  • US 5,089,979 A
  • Filed: 02/08/1989
  • Issued: 02/18/1992
  • Est. Priority Date: 02/08/1989
  • Status: Expired due to Term
First Claim
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1. A measuring system for measuring a parameter comprising:

  • a) a plurality of interchangeable probes for measuring a parameter wherein each probe includes;

    1) a transducer integral to the probe for measuring the parameter and providing a signal representative of the parameter; and

    2) a first digital memory integral to the probe for storing a table of probe correction data; and

    b) a plurality of base units wherein any one of the interchangeable probes can be coupled to any one of the base units for providing the signal and the data to that base unit, wherein each base unit includes analog electronic circuits coupled to receive the signal from the probe and which includes;

    1) an analog to digital converter;

    2) a second digital memory integral to the base unit for storing a table of base unit correction data; and

    3) digital electronic circuits coupled to the first digital memory and second digital memory for accessing the data stored in the first memory and the second memory and for making a correction for any errors introduced by the probe and the base unit, respectively.

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