Patent ID: 6074089
Filing Date: 2000-06-13
Classification: G01D,G01K

Abstract:
In a hand-held thermoelectric cold junction compensator connector module comprising:(i) a thermocouple connector housing;(ii) a cold junction compensator circuit mounted within said housing; and including input and output means;(iii) input terminal means on said housing connected to said input means or said compensator circuit;(iv) a signal linearization circuit mounted within said housing and including input mean and output means, said input means being connected to said output means of said compensator circuit;(v) converter/amplifier means in said housing having input means and output means, said input means being connected to said output means of said signal linearization circuit;(vi) output terminal means on said housing connected to said output means of said converter/amplifier means;(vii) a logic circuit in said housing connected to said signal linearization circuit and constructed to provide selectively degree Centigrade and degree Fahrenheit correction to the output of said signal linearization circuit;(viii) battery power supply means disposed within said housing and connected to supply power to said cold junction compensator circuit, to said signal linearization circuit, to said logic circuit, and to said converter/amplifier circuit, the improvement comprising:said logic circuit further includinga microprocessor having an eight bit analogue to digital converter which provides both linearity correction, as a pulse width modulation signal, and also provides thermoelectric cold junction compensation.