Thermowell Thermocouple Specs & Options
Thermowell thermocouple assemblies can be configured with various options. Durex can also engineer custom designs per your specification requirements.
Learn more about all of our Temperature Sensor Solutions.
Thermocouple Types
| Thermocouple Type Codes | Limits of Error | |||
| E | J | K | T | Standard Limits |
| 2 | 3 | 4 | 8 | Special Limits |
Element Type
| Code | Metal Type |
| O | MI Cable, 18 Gauge, Single, Specify Junction Grounded/Ungrounded |
| P | MI Cable, 18 Gauge, Dual, Specify Junction Grounded/Ungrounded |
Threaded Thermowell Styles
| STANDARD WELL - STEPPED SHANK | |||
| "U" DIm. | 1/2" NPT | 3/4" NPT | 1" NPT |
| 2 1/2" | 1202H | 1302H | 1402H |
| 4 1/2" | 1204H | 1304H | 1404H |
| 6" | 12060 | 13060 | 14060 |
| 7 1/2" | 1207H | 1307H | 1407H |
| 10 1/2" | 1210H | 1310H | 1410H |
| 12" | 12120 | 13120 | 1412H |
| 16 1/2" | 1216H | 1316H | 1416H |
| 22 1/2" | 1222H | 1322H | 1422H |
| LAGGING EXTENSION WELL - STEPPED SHANK | |||
| "U" DIm. | 1/2" NPT | 3/4" NPT | 1" NPT |
| 2 1/2" | 2202H | 2302H | 2402H |
| 4 1/2" | 2204H | 2304H | 2404H |
| 6" | 22060 | 23060 | 24060 |
| 7 1/2" | 2207H | 2307H | 2407H |
| 10 1/2" | 2210H | 2310H | 2410H |
| 12" | 22120 | 23120 | 2412H |
| 16 1/2" | 2216H | 2316H | 2416H |
| 22 1/2" | 2222H | 2322H | 2422H |
| STANDARD WELL - STRAIGHT SHANK | ||
| "U" Dim. | 3/4" NPT | 1" NPT |
| 2 1/2" | 3302H | 3402H |
| 4 1/2" | 3304H | 3404H |
| 6" | 33060 | 34060 |
| 7 1/2" | 3307H | 3407H |
| 10 1/2" | 3310H | 3410H |
| 12" | 33120 | 3412H |
| 16 1/2" | 3316H | 3416H |
| 22 1/2" | 3322H | 3422H |
| LAGGING EXTENSION WELL - STRAIGHT SHANK | ||
| "U" Dim. | 3/4" NPT | 1" NPT |
| 2 1/2" | 4302H | 4402H |
| 4 1/2" | 4304H | 4404H |
| 6" | 43060 | 44060 |
| 7 1/2" | 4307H | 4407H |
| 10 1/2" | 4310H | 4410H |
| 12" | 43120 | 4412H |
| 16 1/2" | 4316H | 4416H |
| 22 1/2" | 4322H | 4422H |
| STANDARD WELL - TAPPERED SHANK | ||||
| "U" Dim. | 3/4" NPT | 1" NPT | ||
| .260" BORE | .385 BORE | .260" BORE | .385" BORE | |
| 2 1/2" | 5302H | 6302H | 5402H | 6402H |
| 4 1/2" | 5304H | 6304H | 5404H | 6404H |
| 6" | 53060 | 63060 | 54060 | 64060 |
| 7 1/2" | 5307H | 6307H | 5407H | 6407H |
| 10 1/2" | 5310H | 6310H | 5410H | 6410H |
| 12" | 53120 | 6312H | 5412H | 6412H |
| 16 1/2" | 5316H | 6316H | 5416H | 6416H |
| 22 1/2" | 5322H | 6322H | 5422H | 6422H |
| LAGGING EXTENSION WELL - TAPPERED SHANK | ||||
| "U" Dim. | 3/4" NPT | 1" NPT | ||
| .260" BORE | .385 BORE | .260" BORE | .385" BORE | |
| 2 1/2" | 7302H | 8302H | 7402H | 8402H |
| 4 1/2" | 7304H | 8304H | 7404H | 8404H |
| 6" | 73060 | 83060 | 74060 | 84060 |
| 7 1/2" | 7307H | 8307H | 7407H | 8407H |
| 10 1/2" | 7310H | 8310H | 7410H | 8410H |
| 12" | 73120 | 8312H | 7412H | 8412H |
| 16 1/2" | 7316H | 8316H | 7416H | 8416H |
| 22 1/2" | 7322H | 8322H | 7422H | 8422H |
Flange Thermowell Styles
| .260 BORE - STEPPED SHANK | |||
| "U" DIm. | 3/4" Flange Size | 1" Flange Size | 1 1/2" Flange Size |
| 4" | F11040 | F12040 | F13040 |
| 7" | F11070 | F12070 | F13070 |
| 10" | F11100 | F12100 | F13100 |
| 13" | F11130 | F12130 | F13130 |
| 16" | F11160 | F12160 | F13160 |
| 22" | F11220 | F12220 | F13220 |
| .260 BORE - TAPERED SHANK | |||
| "U" Dim. | 3/4" Flange Size | 1" Flange Size | 1 1/2" Flange Size |
| 4" | F51040 | F52040 | F53040 |
| 7" | F51070 | F52070 | F53070 |
| 10" | F51100 | F52100 | F53100 |
| 13" | F51130 | F52130 | F53130 |
| 16" | F51160 | F52160 | F53160 |
| 22" | F51220 | F52220 | F53220 |
| .260 BORE - STRAIGHT SHANK | |||
| "U" Dim. | 3/4" Flange Size | 1" Flange Size | 1 1/2" Flange Size |
| 4" | F31040 | F32040 | F33040 |
| 7" | F31070 | F32070 | F33070 |
| 10" | F31100 | F32100 | F33100 |
| 13" | F31130 | F32130 | F33130 |
| 16" | F31160 | F32160 | F33160 |
| 22" | F31220 | F32220 | F33220 |
| .385 BORE - TAPERED SHANK | |||
| "U" Dim. | 3/4" Flange Size | 1" Flange Size | 1 1/2" Flange Size |
| 4" | F61040 | F62040 | F63040 |
| 7" | F61070 | F62070 | F63070 |
| 10" | F61100 | F62100 | F63100 |
| 13" | F61130 | F62130 | F63130 |
| 16" | F61160 | F62160 | F63160 |
| 22" | F61220 | F62220 | F63220 |
| .385 BORE - STRAIGHT SHANK | |||
| "U" Dim. | 3/4" Flange Size | 1" Flange Size | 1 1/2" Flange Size |
| 4" | F41040 | F42040 | F43040 |
| 7" | F41070 | F42070 | F43070 |
| 10" | F41100 | F42100 | F43100 |
| 13" | F41130 | F42130 | F43130 |
| 16" | F41160 | F42160 | F43160 |
| 22" | F41220 | F42220 | F43220 |
Well Material
| Code | Metal Type |
| 4 | 304 Stainless Steel |
| 6 | 316 Stainless Steel |
| B | Brass |
| R | Carbon Steel |
Spring Loaded Options
| Code | Probe Tip Style |
| 1 | Fixed Fitting |
| 2 | Spring Loaded Fitting |
Thermowell Extension Material
| Code | Nipple Material |
| K | Black Pipe, Schedule 40 |
| Y | Galvanized Steel |
| 4 | 304 Stainless Steel |
| 6 | 316 Stainless Steel |
Flange Face Type
| Code | Face Type |
| 1 | Raised Face |
| 2 | Flat Face |
Thermowell Flange Size
| Code | Flange Size (TDW3 Only) |
| D | 1 1/2" Flange |
| E | 2" Flange |
| F | 2 1/2" Flange |
| G | 3" Flange |
| H | 4" Flange |
Screw Cover Terminal Heads
| Code | Screw Cover Head Materials | Thermocouple Thermowell Type |
| A | 1/2” NPT Conduit, Aluminum Head | TDW1, TDW2, TDW3 |
| B | 3/4” NPT Conduit, Aluminum Head | TDW1, TDW2, TDW3 |
| C | 1/2” NPT Conduit, Cast Iron Head | TDW1, TDW2, TDW3 |
| D | 3/4” NPT Conduit, Cast Iron Head | TDW1, TDW2, TDW3 |
| M | 1/4” NPT Conduit Connection, Miniature Plastic Head | TDW1, TDW2 |
| P | 1/2” NPT Conduit, Grey Delrin Head | TDW1, TDW2 |
| W | 1/2” NPT Conduit, White Polypropylene Head | TDW1, TDW2 |
| Z | 1/2” NPT Conduit, Explosion Proof Aluminum Head | TDW1, TDW2, TDW3 |
| Y | 3/4” NPT Conduit, Explosion Proof Aluminum Head | TDW1, TDW2, TDW3 |
Contact us to learn more about our thermowell thermocouple assemblies.
Required Fields *
Downloads
Back to TopTechnical Data - Material Selection Guide for Thermowell Applications 0115-250KB
Industrial Thermocouples Catalog 0115-1MB
Thermocouples Catalog 0115-2MB
Temperature Sensors Catalog 0115-4MB
Temperature Sensor Element Selection Guide 200KB
Technical Data - Thermocouple Wire Code Standards 0115-250KB