Bare thermocouple wire or grounding contact thermocouple time constant in the air compared with the total diameter

As shown in figure 1 and figure 2 to room temperature, atmospheric pressure, air flow speed of 20 m per second ( 65 ') Conditions for the thermocouple time constant of computing in the air.

for beaded thermocouple and the earthing contact thermocouple ( Figure 3 or figure 4) And the time constant multiplied by 1. 5.

with exposed butt welding type 0. 025毫米( 0. 001' ) Diameter of the thermocouple wire made of a thermocouple time constant = 0. In 003 seconds.

“ Time constant throughout the &; Or & other Response time & throughout; Defined as the instantaneous temperature change of 63. The time needed for 2%.

due to space limitations, time constant curve is divided into four separate curve. M:

diagram 1 & frasl sheath diameter; 32' ~ 3⁄ 8'

note: these more suitable for the leakage & other; Butt welding & throughout; Type or & other Grounding & throughout; Contact thermocouple. If the thermocouple is & other; Beads & throughout; Type or & other The grounding & throughout; Type, time constant will be greater. These time only approximate, provide them just for the purpose of comparison. The link shown in the figure 3 and figure 4, the time constant value multiplied by 1. 5.