TB 9-4931-426-40
(2) Repeat technique of paragraph 7 k (4) through (6) above until four
readings are obtained.
(3) Average the resistance value of (2) above and record as Rt.
thermometer and obtain set-point temperature for TI.
(5) Select the next ratio lower than the calculated resistance ratio in (4) above.
Determine the difference in the resistance ratio.
(6) Multiply the difference obtained in (5) above by the next higher inverse
difference to find C.
(7) Algebraically add C to the temperature equal to the lower resistance ratio used
in (5) above. Value obtained will be within 0.03 C of 0 C.
b. Adjustments. No adjustments can be made.
9. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
5/(6 Blank)