High Temperature Thermocouple

S Type Thermocouple

Parameter	Specification
Make	Aavad
Model	ASWS
Element	Pt. Rh (10%)/Pt
Element diameter	0.5 mm
Calibration std.	As per ANSI mc 96.1
Configuration	Simplex
Insulation	Twin hole ceramic Ker-710
Hot junction	Un-grounded
Terminal block	Ceramic with nickel-plated
Head	Die-cast aluminum weatherproof ANSI
color-coded ‘Blue’ painted with threaded	cover and chain
Protection class	As per IP-65
Cable entry	3/4″ ET
Holding tube moc	Inconel -600 tube
Holding tube diameter	30 mm
Holding tube length	250 mm
Outer ceramic diameter	24 X 18 mm. Id of ceramic Ker-710 (K-99, Alumina 99.7%) X 600 mm long
Inner ceramic diameter	15 X 10 mm Id of ceramic Ker-710 (K-99, Alumina 99.7%) X 600 mm long
Ceramic insulator	2 Hole 5.5
Exposed tube sheath length	1500 mm
Joints	Between holding tube & outer &
inner tube assembly by high temp. Alumina	compound bonding.
Process connection	2 “300#RF Fix welded Flange
Length below flange	1600 mm
Total length below head	1750 mm
Range	Up To 1500°C

Type S thermocouples are constructed using one wire of 90% Platinum and 10% Rhodium (the positive or “+” wire) and a second wire of 100% platinum (the negative or “-” wire). -Like type R, type S thermocouples are used For High Temperature Sensing up to 1500 °C.
The thermocouple working principle is based on the Seeback Effect. This effect states that when a closed circuit is formed by jointing two dissimilar metals at two junctions, and junctions are maintained at different temperatures then an electromotive force (e.m.f.) is induced in this closed circuit.