×

Instrumentation system with multiple sensor modules providing calibration date information

  • US 5,365,462 A
  • Filed: 10/04/1993
  • Issued: 11/15/1994
  • Est. Priority Date: 11/25/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. An instrumentation apparatus for sensing and measuring at least one parameter, comprising in combination:

  • a. a first sensor module including a first sensor responsive to a condition for generating a first electrical signal indicative of such condition;

    b. a second sensor module including a second sensor responsive to a condition for generating a second electrical signal indicative of such condition;

    c. central processor means responsive to electrical signals generated by said first sensor module and by said second sensor module for computing a measurement sensed by said first sensor module and by said second sensor module, said central processor means including date means for identifying the present date;

    d. display means coupled to said central processor means for numerically displaying the measurement computed by said central processor means;

    e. means for selectively coupling one of said first and second sensor modules to said central processor;

    f. each of said first and second sensor modules including calibration date code means for providing to said central processor means information which said central processor means can compare to the present date for detecting that the selected sensor module requires recalibration;

    g. said central processor means being responsive to the calibration date code means of the selected sensor module that is coupled to said central processor means for comparing the information provided thereby to the present date, and causing said display means to display warning indicia if the selected sensor module requires recalibration.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×