01.24 тип ТППТ, ТПРТ

Description
Technical characteristics

01.24 тип ТППТ, ТПРТ

Thermocouples 01.23, 01.24 are designed for temperature measurement in high-temperature gaseous non-corrosive media, and also in corrosive media that do not damage thermowell material. These modifications are similar to 01.21 in design, but they have additional mounting elements: flange for 01.23 and threaded fitting for 01.24.
Thermocouple 01.24А are designed for hydrogen, carbonic oxide, water vapour, and higher hydrocarbon temperature measurement. Thermocouple 01.24 is leak-tight in application. Thermocouple design provides nitrogen boost into inner thermocouple cavity.
Ceramic thermowell is partially armoured with assembly steel tube. Heat-resistant steel AISI310 tube is used in the area adjacent to thermowell ceramic part, steel 12Cr18Ni10T tube is used in other parts.
Stop ring 36 mm diameter and movable fitting with М39х2 thread are used for thermocouple mounting at site.

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Technical characteristics

nominal (rated) pressure: 0.4 MPa
Tolerance class:

1 - 2 for TCS and TCR
2 - 3 for TCS and TCR

Thermowell material:

C795 – aluminium-oxide ceramics, Al2O3 content is not less than 95%;
C799 – aluminium-oxide ceramics, Al2O3 content is not less than 99.5%;
CК90 – silicon carbide (SiC content is 88¸92%).
Note: to prevent ceramic thermowell destruction due to high temperature gradient when thermowell is immersed in working medium, thermocouple heating rate should not exceed 150°С/min.

Hot junction: one, ungrounded from thermowell metal armour
Thermocouple wire diameter:

Designation	А	В	С
Positive wire diameter (PR30), mm	0.5	0.4	0.4
Negative wire diameter (PR6), mm	0.5	0.5	0.4

Thermal inertia index Not rated

Temperature range

TC type	operating temperature range, °С	material of thermowell working part
TCS, TCR	0 to 1300	C795, C799, CК90
TCB	600 to 1400	C795 – aluminium-oxide ceramics
TCB	600 to 1600	C799 – aluminium-oxide ceramics

Execution options

Insertion length L: 630, 800, 1000, 1250, 1600 mm.

Thermocouple type	Design modification		Wire diameter	Tolerance class**	Hot junction number and type	Thermo- well material	Diameter D, mm	Insertion length, L, mm		Ceramic part length, C , mm
	modification	typical version*						min	max
TCS, TCR, TCB	01.21	-020	А, В, С	1, 2 (TCS, TCR) 2, 3 (TCB)	U, U2	C795, C799	12	500	2000	400 to 1250
						C799	15
		-022				C795, C799	20
						CК90, CК99	22			400 to 600
	01.24					C795, C799	20	630		320
								900		400
								1000		400
								1250		630, 1000
								1600		1000

* – see Appendix for version description.
** – typical version: TCS, TCR - 2 tolerance class; TCB - 3 tolerance class.

Examples of product designation

TCB 01.2х-022 - (А, В, С)Х - U - CХХХ - D - L / -(flange parameters or fitting dimensions) TCB 01.24А-022 - В3 - U - C799 - 20 - 1000/400 – type B calibration thermocouple TCB, design modification 01.24А-022 with nitrogen blow unit, 0.4+/0.5– mm thermocouple wire diameter (В), tolerance class 3, one ungrounded junction (U), aluminium-oxide ceramic thermowell C799 diameter 20 mm, insertion length (L) 1000 mm, ceramic part length (C ) 400 mm. TCS 01.23-022 – А1 - U - C799 - 20 - 1000/700/160-150.110.4х18 – type S calibration thermocouple TCS, design modification 01.23-022 with mounting flange, 0.5+/0.5– mm thermocouple wire diameter (В), tolerance class 1, one ungrounded junction (U), aluminium-oxide ceramic thermowell C799 diameter 20 mm, insertion length (L) 1000 mm, ceramic part length (C ) 700 mm, extension neck length 160 mm. Flat flange, outer diameter 150mm, center-to-center distance 110 mm, 4 holes 18 mm diameter TCR 01.24-022 – В2Н30 – U - C799 - 20 - 1000/400-М33 – type R thermocouple TCR, design modification 01.24-022 with threaded fitting, thread М33х2, 0.4+/0.5– mm thermocouple wire diameter (В), tolerance class 2, with installed measuring transmitter 4-20мА+HART, one ungrounded junction (U), aluminium-oxide ceramic thermowell C799 diameter 20 mm, insertion length (L) 1000 mm, ceramic part length (C ) 400 mm.