Endress+Hauser TA557 Specifications

Technical Information
TI156T/02/en
No. 71108024

Industrial protecting tube

omnigrad TA557

Heavy duty - General purpose
From round bar stock - Ø 35 mm
1" NPT threaded or flanged weld type
Also ENI BAR 1

Threaded

process connection

Description

TA557 is an industry standard
thermowell, manufactured from round bar
stock (drilled).
The process connection can be threaded
or flanged weld.
The thermowell stem shape can be
straight or conical.
The extension and the immersion lengths
as well as the bar dimensions can be
chosen according to process
requirements.
A wide choice of standard materials and
process connections is available; other
versions can be ordered according to
specification.
Different grades of surface finishing are
also available.

Flanged

process connection

Application

TA557 is designed for use with resistance
and thermocouple thermometers mainly
in heavy duty applications.

Technical data

Round bar Standard reference: ENI BAR 1

Extension O.D.: 35 mm
Immersion O.D.: <
Standard ext. length: 100 mm
Standard bore diameter: 8 mm
Standard material: AISI316/W.1.4401, AISI316L/W.1.4404

28 mm

omnigrad TA557

Connection to
thermometer

Process connection Type: threaded or flanged weld

Tip Bottom shape: straight or conical

Surface Finishing: refer to the order key

Threaded: 1/2" NPT - female

Thread: 1" NPT
Flange type: ANSI slip-on
Flange material: AISI 316 or A 105
Flange mounting: threaded and back welded - 3x3 mm wide

Std. bottom thickness: 5 mm

2 Endress+Hauser

omnigrad TA557

Notes:
(1) Wall thickness 3 mm minimum

(Q2 - F) / 2 ≥ 3 mm and

(2) Nominal length A: 160 ÷ 1000 mm

Ø 35

½ NPT

”

T

1 NPT

”

A

Ø Q1

U

Ø F

Ø Q2

Ø 35

”

½ NPT

T

A

U

Ø Q1

Ø F

Ø Q2

Order key

TA557- HEAVY DUTY THERMOWELL - General purpose - From round bar stock

Ø 35 mm - 1" NPT threaded or flanged weld type - Also ENI BAR 1

Extension, thermowell shape and type (2)

A 100 mm=T,Q1/Q2=25/18 tapered,ENI
Y mm=T, Q1=mm, Q2=mm special taper (1)

Immersion Length U (60-900mm) (2)

TA 60 mm immersion length U
TB 70 mm immersion length U
TC 100 mm immersion length U
TD 120 mm immersion length U
TE 130 mm immersion length U
TF 150 mm immersion length U
TG 180 mm immersion length U
TH 200 mm immersion length U
TJ 210 mm immersion length U
TK 220 mm immersion length U
TL 250 mm immersion length U
TM 255 mm immersion length U
TN 260 mm immersion length U
TP 270 mm immersion length U
TQ 305 mm immersion length U
TR 310 mm immersion length U
TS 340 mm immersion length U
TT 350 mm immersion length U
TU 390 mm immersion length U
TV 400 mm immersion length U
TW 450 mm immersion length U
TX 500 mm immersion length U
TZ 600 mm immersion length U
YY mm immersion length U to specific.

Thermowell type, price per mm A (U+T) (160-1000mm)

C Thermowell material: SS316 / 1.4401
D Thermowell material: SS316L / 1.4404
Y Special version

Finishing of immersion length

4 1,6 micron finishing immersion length
1 0,8 micron finishing immersion length

Process connection type

AA Process connection: none (1" NPT)
CD Slip-on 1" ANSI 300 RF SS316
CH Slip-on 1 1/2" 150 RF SS316
CK Slip-on 1 1/2" 300 RF SS316
CP Slip-on 1 1/2" ANSI 600 RTJ SS316
CV Slip-on 2" ANSI 300 RF SS316
CX Slip-on 2" ANSI 300 RTJ SS316
YY Special version

Flange finishing

1 Finishing: not required (no flange)
2 Finishing: standard for ASME/ANSI
9 Flange finishing as specified

Thermowell bore diameter F

2 8 mm thermowell bore F
9 Special thermowell bore (1)

Plug and chain

A Without plug and chain
B Safety plug: SS 304 with chain

Markings

0 Markings not selected
1 Markings punched on

TA557- Complete Order Code

Endress+Hauser 3

Supplementary
Documentation

• Technical Information Industrial Protecting Tubes (TI138T/02/en)

TI156T/02/en/05.01
FM+SGML 6.0

No: 71108024

Endress+Hauser
Gmbh+Co.
Instruments International
P.O. Box 2222
D-79574 Weil am Rhein
Germany

Tel. [phone]
Tx 773926
Fax [phone]
http://www.endress.com
[e-mail]