A J- type thermocouple is used to measure the temperature in a heating process. The length of the bare material is 140mm and thickness is 1.5mm. Find the time constant of the bare material. уре of Thermo-Material couple K ( Q W/m- (kg/m3) k) |(J/Kg- oc) J Iron- Constantan 46 8535 345 K Kromel- Alumel 35 8738 380 Copper- Constantan 160 8902 316 Cromel Contantan 33 8825 336 IN Nicrocil- Nisil 34 8702 376 Pt(30%)Rhodium - 19 Pt(6%)Rhodium B 15718 56 Platinum (13%)Rodium, - Platinum 55 16628 99 Platinum(10%)Rodium 52.9 16745 99 Platinum Time constant of the bare material is, T=
A J- type thermocouple is used to measure the temperature in a heating process. The length of the bare material is 140mm and thickness is 1.5mm. Find the time constant of the bare material. уре of Thermo-Material couple K ( Q W/m- (kg/m3) k) |(J/Kg- oc) J Iron- Constantan 46 8535 345 K Kromel- Alumel 35 8738 380 Copper- Constantan 160 8902 316 Cromel Contantan 33 8825 336 IN Nicrocil- Nisil 34 8702 376 Pt(30%)Rhodium - 19 Pt(6%)Rhodium B 15718 56 Platinum (13%)Rodium, - Platinum 55 16628 99 Platinum(10%)Rodium 52.9 16745 99 Platinum Time constant of the bare material is, T=
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Transcribed Image Text:A J- type thermocouple is used to measure the
temperature in a heating process. The length of
the bare material is 140mm and thickness is
1.5mm. Find the time constant of the bare material.
уре of
Thermo-Material
couple
K (
Q
W/m-
(kg/m3)
k)
(J/Kg-
oc)
J
Iron- Constantan
46
8535
345
Kromel- Alumel
35
8738
380
Copper- Constantan 160 8902
316
Cromel Contantan
33
8825
336
Nicrocil- Nisil
34
8702
376
Pt(30%)Rhodium -
19
15718 56
B
Pt(6%)Rhodium
Platinum(13%)Rodium
55
16628 99
R
Platinum
Platinum(10%)Rodium.
52.9 16745 99
Platinum
Time constant of the bare material is, T=
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