MIL-P-11570 Revision C, July 30, 1984
PYROMETERS, INDICATING, THERMOCOUPLES
Includes all amendments and changes through Interim Notice 1, March 9, 1998
Additional Comments: INAC FOR NEW DESIGN AFTER 3/9/98
This specification covers direct reading, indicating thermocouple pyrometers with a temperature range up to 2700° F.
Pyrometers shall be of the following types and classes, as specified (see 6.2):
Type I - Portable. Type II - Wall-mounted. Class I - Range up to 1600° F. Class 2 - Range up to 2300° F. Class 3 - Range up to 2700° F.