
Technical Information
TI179T/02/en
No. 71108032
Industrial Protecting Tube
omnigrad TA572
Heavy duty - General purpose
From round bar stock
Socket weld type - Ø 29 ÷ 25 mm
Also Du Pont SR21T/SR22T
Straight Conical Conical Tapered
Description
TA572 is an industry standard
thermowell, manufactured from round
bar stock.
The process connection is socket weld.
The thermowell stem shape can be
straight, conical or conical tapered.
The extension, the immersion and the
tapering lengths as well as the bar
dimensions can be chosen according to
process requirements.
A wide choice of standard materials is
available; other versions can be ordered
according to specification.
Different grades of surface finishing are
also available.
Application
TA572 is designed for use with resistance
and thermocouple thermometers mainly
in heavy duty applications.

Technical data
Round bar Standard reference: Du Pont SR21T/SR22T
Socket size diameter: 29÷25 mm
Immersion O.D.: <
Standard extens. length: 45, 70 mm
Standard bore diameter: 7 mm or 8 mm
Standard material: AISI316 Ti-W.1.4571, AISI316/W.1.4401, AISI316 L/W.1.4404
socket size diameter
omnigrad TA572
Connection to
thermometer
Process connection Threaded: socket weld
Tip Bottom shape: straight, conical or conical tapered
Surface Finishing: 0.8 micron
Thread: 1/2" NPT, 1/2" NPSC - female
Bottom thickness: 5 mm or 6 mm
1.6 micron
2 Endress+Hauser

omnigrad TA572
Notes:
(1) Wall thickness 3 mm minimum
(Q2 - F) / 2 ≥ 3 mm
(2) Nominal length A: 90÷1000 mm
Order key
TA572- HEAVY DUTY THERMOWELL - General purpose - From round bar stock
Socket weld type - Ø 29÷25 mm - Also Du Pont SR21T/SR22T
Thermometer connection S
1 1/2" NPT-F thermometer connection S
2 1/2" NPSC-F thermometer connection S
9 Connection S to specification
Extension T/Socked size diam./Outside (2)
diam. Q1/Taper diam. Q2/Taper length R
A 45 mm(1 3/4)=T/27mm(1 1/16)=d/22mm
(7/8)=Q1/19,5mm(49/64)=Q2/None=R
F 45 mm(1 3/4)=T/27mm(1 1/16)=d/27mm=Q1
19mm(3/4)=Q2/None=R
G 70 mm(2 3/4)=T/27mm(1 1/16)=d/27mm=Q1
19mm(3/4)=Q2/None=R
Y T/diam/Q1/Q2/R to specification (1)
Immersion length U (50-960mm) (2)
TA 100 mm immersion length U
YY mm immersion length U to specific.
Material: price for mm length A (U+T) (90-1000mm)
B Thermowell material: SS316Ti / 1.4571
C Thermowell material: SS316 / 1.4401
D Thermowell material: SS316L / 1.4404
Y Material to specification
Finishing of immersion length
4 1,6 micron finishing immersion length
1 0,8 micron finishing immersion length
Bottom thickness D
C 6mm (1/4") bottom thickness D
D 5mm (3/16") bottom thickness D
Y mm bottom thick.D to specification
Bore diameter F
1 7 mm bore diameter F
2 8 mm bore diameter F
9 mm bore diameter F to specification (1)
Plug and chain
A Without plug and chain
B SS 304 plug and chain
Markings
0None
1 Punched on
TA572- Complete Order Code
Endress+Hauser 3

Supplementary
Documentation
• Technical Information Industrial Protecting Tubes (TI138T/02/en)
TI179T/02/en/05.01
FM+SGML 6.0
No: 71108032
Endress+Hauser
Gmbh+Co.
Instruments International
P.O. Box 2222
D-79574 Weil am Rhein
Germany
Tel. (07621) 975-02
Tx 773926
Fax (07621) 975 345
http://www.endress.com
info@ii.endress.com