Metal Protection Tubes

Metal protection tubes are supplied in forms A, B and C.

Standard nominal lengths are 355 mm, 500 mm, 710 mm and 1000 mm. Other nominal lengths like 250 mm, 1400 mm and 2000 mm are available on request.

The ordering code of this product is composed of its form, dia., identification letters of the material number and protection tube length. Please refer to our Product Information "Straight Thermocouples" regarding the relation between protection tube length and nominal length.

Example: A22Dx1020

For further informations please download our Product Informtion Straight TC

Abb.1
 
Dimensions and permitted deviations for metal protection tubes without bushing

Form

d
+0,2/-0,1

s
+/-0,1
For straight thermocouples with a nominal length I
250 355 500 710 1000 1400 2000
Prot. tube length l 3
Permitted deviation +3.0/-0
Prot. tube length l 3
Perm. deviation +5.0/-0

A / C
15 2 265 370 515 - - - -
22 2 - - 520 730 1020 1420 2020
24 3 - - 520 730 1020 1420 2020
B 22 2 - - - - 1020 1420 2020


Identification letter for metal protection tubes
Ident.
Letter
Short name Material
No.
BF St 35.8 1.0305
BL C 22.8 1.0460
J X6CrNiMo 17 - 12-2 1.4571
DU x18CrNi28 1.4749
R x10CrAl24 1.4749
DU x15CrNiSi2520 1.4841
B Inconel 600 2.4816
Y Inconel 800 1.487
CS Kanthal Super/AF/APM 1 -
Identification letter for
thermocouples
Ident.
Letter
Thermocouple
DIN EN 60 584-1
E NiCr-CuNi
J Fe-CuNi
K NiCr-Ni
N NiCrSi-NiSi
S Pt 10%Rh-Pt
R Pt 13%Rh-Pt
B Pt30%Rh-Pt6%Rh
L Fe-CuNi (DIN 43 710)³
D (Ao) W3%Re-W25%Re
C 4 (AE) W5%Re-W26%Re
A 4 W5%Re-W20%Re
 


  • 1) Differing diameter
  • 2) Please ask for detailed specifications
  • 3) Standard withdrawn 07/97
  • 4) Draft IEC 60 584©65B/737/CD