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This article in AJ

  1. Vol. 74 No. 6, p. 1096-1098
     
    Received: Mar 5, 1982
    Published: Nov, 1982


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doi:10.2134/agronj1982.00021962007400060041x

A Simple Method to Calibrate an Infrared Thermometer1

  1. E. J. Sadler and
  2. C. H. M. van Bavel2

Abstract

Abstract

An infrared thermometer (IRT) was calibrated by simultaneously measuring the temperature of a black cavity with the IRT and with fine thermocouples, while the cavity was being heated from 5 to 50 C, over a 2-hour period. Both temperatures were recorded on cassette tape by a microprocessor-based data collector, transferred to computer disk storage, and used to determine the calibration equation. The entire procedure required about 4 hours from setup to completion, including production of a graph of the equation and the results.

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