A J- type thermocouple is used to measure the temperature in a heating process. Sheath material used is SS304. The length of the sheath is 11mm and thickness is 0.2mm. Find the time constant of the sheath. MaterialQ(kg/m3)s(J/Kg - oc)K(W/m-k)Platinum2145013071.6SS304803050021.4SS316799050021.4SS410775046024.9Air1.2010050.025MgO Powder358087726.8Silicon compound32108003 Time constant of the bare material is, T=Answer

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Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

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A J- type thermocouple is used to measure the temperature in a heating process. Sheath material used is SS304. The length of the sheath is 11mm and thickness is 0.2mm. Find the time constant of the sheath.

Material	Q(kg/m³)	s(J/Kg - ^oc)	K(W/m-k)
Platinum	21450	130	71.6
SS304	8030	500	21.4
SS316	7990	500	21.4
SS410	7750	460	24.9
Air	1.20	1005	0.025
MgO Powder	3580	877	26.8
Silicon compound	3210	800	3

Time constant of the bare material is, T=

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