This standard establis es the methods and means for the verification of pyrometer telescopes with total working radiation, narrow angle with collimation indicator less than 1/16, hereinafter "telescopes", intended for temperature measurement in the range from 673 to 2 773 K (400 to 2 500 °C).
NC 90-14-06-1986 history
1986NC 90-14-06-1986 Metrological Assurance. Work Total Radiation Pyrometers Telescope. Verification Methods and Means