01.25 тип ТППТ, ТПРТ

Description
Technical characteristics

01.25 тип ТППТ, ТПРТ

Thermocouples are designed for temperature measurement of glass melt and other corrosive liquid media.
TCS, TCR (TCB) thermocouple is located in multichannel ceramic tube, which is inside aluminium-oxide ceramic thermowell. Thermowell is protected with metal tip LTHERMOWELL long made of platinum-rhodium alloy. Tip is fixed by means of a tube LC long. The tube is made of alumina ceramic and reinforced with heat-resistant Fe-Cr-45%Ni alloy pipe. Thermocouple design is patented.
L, LC, LTHERMOWELL, L1, L2, L3 dimensions should be explicitly specified at the time of thermocouple order.
Temperature in transition zone between platinum-rhodium tip and thermowell ceramic part should not exceed 1000°С under operating conditions. Recommended thermocouple immersion depth in glass melt should be 30¸50 mm less than LTHERMOWELL.

Movable fitting UNKJ 031, UNKJ 041 or movable mounting flange UNKJ 030 are recommended for thermocouple installation at site

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Technical characteristics

Tolerance class: 1 or 2 for TCS and TCR; 2 or 3 for TCB
Metail reinforcement material Т45 – alloy Fe-Cr-45%Ni
material of thermowell working part
ТPR10 – alloy: 90% platinum, 10% rhodium; ТPR20 – alloy: 80% platinum, 20% rhodium
Note: To prevent inner 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, two or three, ungrounded from thermowell metal reinforcement
Thermocouple wire diameter

Designation	Positive wire diameter (PR10, PR13, PR30), mm	Negative wire diameter (PlT, PR6), mm
А	0.5	0.5
В	0.4	0.5
С	0.4	0.4

Thermal inertia index does not exceed 50 seconds
nominal (rated) pressure: 0.4 MPa

Temperature range

Operating temperature range, *С 0 to 1300 for TCS and TCR; 600 to 1600 for TCB

Execution options

Insertion length L: 320, 500, 630, 800, 900, 1000, 1250, 1600, 2000 mm.

Thermocouple type	Design modification		Wire diameter	Tolerance class**	Hot junction number and type	Thermo- well material	Diameter D, mm	Insertion length, L, mm		Working part length, LTHERMOWELL , mm
	modification	typical version*
								min	max
TCS, TCR, TCB	01.25	020 022	А, В, С	1, 2, 3 (TCS, TCR); 2, 3 (TCB)	U, U2, U3	ТPR10, ТPR20	8,5 ¾16	320	2000	70 to 250

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

Examples of product designation

TCS, TCR (TCB) 01.25-ХХХ - (А, В, С)Х - U3 - ТХХХ - D - L / LC / LTHERMOWELL, L1 / L2 / L3
TCB 01.25-022 - А3 - U3 - ТPR10 - 9 - 900/200/230, 25/100/175– type B calibration thermocouple TCB, modification 01.25-022, 0.5+/0.5– mm thermocouple wire diameter (А), tolerance class 3, three ungrounded junctions (U3), platinum (ТPR10) tip diameter 9 mm, total insertion length 900 mm, ceramic part length (LC) 200 mm, tip length (LTHERMOWELL) 230 mm, element length 25, 100, 175 mm.