EPIC® SENSORS welded thermowells, root and threaded sleeves

Features

  • according to DIN 43772 form 2F
  • fitted to application with weld
  • typically used with threaded temperature sensor
  • threaded temperature sensor has separate cooling neck and connection head
  • threaded temperature sensor has mineral insulated temperature sensor element inside, which will be sleeved with welded thermowell
  • used to protect MI cable sturctured sensor element
  • in some cases welded thermowells are referred as 
  •        weld-in thermowells, product is the same
  • 3D step models available on request.

Typical applications

  • energy and power plant technology
  • process industry 
  • chemical industry
  • machinery and vessel construction
  • manufacturing industry.

Complete sensors with welded thermowells are presented here.

Complete sensors with welded ball thermowells for hygienic areas are presented here.

Check out all our thermowells!

Drawing

Technical data

Product codes

Welded wells

Welded wells dimensions

Welded wells (without cooling neck and connection head) are available according to this table:

Product numberTypeFor sensing element
diameter/length [mm]
Inner threadL
[mm]
La
[mm]
Da
[mm]
Lb
[mm]
Db
[mm]
1025318E-6/303/120
1025319E-6/553/145
1090956E-6/1153/205
911966D1-L6/315M18×1,51405024h76512,5
911144D4-L6/375M18×1,520011024h76512,5
911968D5-L6/435M18×1,526011024h712512,5
911907D1-M6/315M18×1,51405024h76512,5
911165D4-M6/375M18×1,520011024h76512,5
911457D5-M6/435M18×1,526011024h712512,5
911890D1-K6/315M18×1,51405024h76512,5
911161D4-K6/375M18×1,520011024h76512,5
911967D5-K6/435M18×1,526011024h712512,5
911906D1-O6/315M18×1,51405024h76512,5
911145D4-O6/375M18×1,520011024h76512,5
911969D5-O6/435M18×1,526011024h712512,5
912066D1S-L3/315M14×1,51405018h7659
911164D4S-L3/375M14×1,520011018h7659
912067D1S-M3/315M14×1,51405018h7659
911166D4S-M3/375M14×1,520011018h7659
912065D1S-K3/315M14×1,51405018h7659
911162D4S-K3/375M14×1,520011018h7659
912068D1S-O3/315M14×1,51405018h7659
911163D4S-O3/375M14×1,520011018h7659

Other sizes and materials are quoted upon request.

Cooling neck and connection head for welded thermowells

Cooling neck and head for welded well

If the process already has a welded thermowell, a suitable cooling neck and connection head can be purchased as a separate component.

Cooling necks have outer threads which can be applied to D-wells:

  • M14×1,5 for D1S and D4S
  • M18×1,5 for D1, D4 and D5.

Cooling necks and connection heads, as components (without wells, without sensing elements):

Product nunberTypeFor well types
915312H-12-D/H-165/M18X1,5 D1, D4 and D5
915313H-12-D/H-165/M14X1,5 D1S and D4S

A cooling neck, and connection head equipped with a sensing element - without a welded thermowell - is presented on datasheet 5.
A cooling neck, and connection head equipped with a sensing element and with a welded well is presented on datasheet 4.

Installation example: Well welded on root sleeve
Welded root sleeves - dimensions

Welded root sleeves for welded thermowells

The root sleeve is first welded on the process pipe or container, and then bored to precise inner dimensions. After that the D1S/D4/D4S/D5 type thermowell is welded on the root sleeve.

The root sleeve material needs to be the same as the welded thermowell.

Welded root sleeves, as components:

Product number Type For well type
1025309 18-K D1S and D4S
1025312 18-L D1S and D4S
1025313 18-M D1S and D4S
918138 18-O D1S and D4S
912333 24-K D1, D4 and D5
912331 24-L D1, D4 and D5
912332 24-M D1, D4 and D5
912334 24-O D1, D4 and D5

Other materials and sizes are quoted upon request.

Complete RTD and TC sensors with welded wells (D1...D5) are presented on Datasheet 4.

Welded threaded sleeves

Welded sleeves

A threaded sleeve is first welded on the process pipe or container, and then the threaded thermowell is installed to the sleeve.

As standard, the threaded sleeve material is acid-proof AISI 316L.

Welded threaded sleeves available are:

Product numberType and
inner thread
Overall
length [mm]
1025314  G1/2” L=30
1002689 G1/2” L=70
1003144 G1/2” L=100
1028394  G1” L=70

Other materials and sizes are quoted upon request.

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