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INTRODUCTION SETE Thermowells serve two primary functions: (1) extend temperature instrument life by protecting sensing elements from harsh process conditions, and (2) provide process isolation,

3 INTRODUCTION SETE Thermowells serve two primary functions: (1) extend temperature instrument life by protecting sensing elements from harsh process conditions, and (2) provide process isolation, enabling technicians to remove the temperature instrument for replacement or repair while the process system remains operational. SETE thermowells are made from high-quality, thermally-conductive materials, providing long life and maximum temperature measurement accuracy. SETE specializes in the design and manufacture of thermowells, sample probes, and protection tubes. The product specifications included in this document sufficiently address the majority of applications found in process industries. For special applications, please contact SETE for engineering and design assistance. Table of Contents Introduction... 1 Specifications... 2 Terminology... 3 Selection Guidelines... 3 Ordering Information: Thermowells... 4 Sample Probes... 6 Protection Tubes... 8 Illustrations: Thermowells Sample Probes Protection Tubes Page 1

4 Specifications Thermowells / Sample Probes Protection Tubes Material In compliance with ASTM specifications or other applicable national standard (ASME, AWS, etc.) Shank O.D. ±0.010 Overall Length (OAL) ±0.050 Bar Stock Mill Standard / Material In compliance with ASTM specifications or other applicable national standard (ASME, AWS, etc.) Tip Thickness ±0.050 (1/4 Standard) Immersion Length ( U dim) ±0.50 for U < 60 ±0.75 for 60 < U < 96 ±1.00 for U > 96 Tip Thickness (Thermowell only) ±0.050 (1/4 Standard) Shank Surface Finish Polished to 16 RMS Bore ±0.003 Bore Concentricity ± drift per inch, max TIR Page 2

5 SETE Terminology Immersion Length ( U dim): Lag Length ( T dim): Instrument Insertion Length ( A dim): Tip Diameter ( D dim): Shank/Root Diameter ( Q dim): Shank: Length of thermowell shank. Extended length between the process connection and instrument connection to account for piping or vessel insulation. Also referred to as bore depth. Overall length (OAL) minus tip thickness. Diameter of the thermowell at the tip. For tapered and stepped thermowells, the diameter at the base of the process connection. For straight thermowells, the diameter of the shank throughout its length. Portion of the thermowell that is immersed into the process system, extending from the base of the process connection to the thermowell tip. Typically either straight, tapered, or stepped. Contact SETE for special design requirements. Stepped Shank: Sometimes referred to as reduced tip. Standard root diameter, stepped down to ½ diameter at the tip, to improve measurement response time. Straight Shank: Recommended for corrosive or erosive applications. Tapered Shank: Recommended for high-velocity applications where strength and rigidity are essential. Bore Diameter: Head Length ( H dim): Head Diameter ( C dim): The inside diameter of the thermowell. Typically.010 greater than the diameter of the temperature sensor. (Protection Tubes only) Dimension from the instrument connection to the base of the process connection. (Socket Weld, Weld-In, and Van Stone only) Actual diameter of the head dictated by the process connection. Selection Guidelines Bore Diameter The most common bore diameters are and SETE offers a wide variety of bore diameters to meet customer specifications, up to 1. Strength The strength of a thermowell depends on several parameters that relate thermowell construction to the installation environment. For most applications, standard SETE thermowells provide the necessary strength if the material, style, and length are properly specified for the application. It is important to note that most thermowell failures are caused by vibration that is induced by fluid flow. SETE offers applications engineering assistance, including wake frequency calculations and custom thermowell design, to help ensure proper thermowell performance in severe-service installations. Immersion Length To ensure measurement accuracy, the immersion length should be long enough to ensure that the entire temperature-sensitive portion of the temperature instrument is extended into the process medium. For liquid processes, the thermowell should extend into the process fluid a depth equal to the sensor s temperaturesensitive zone plus one inch or more. For gas processes, the thermowell should reach into the process fluid a depth equal to the sensor s temperature sensitive zone plus three inches or more. Thermocouples have short temperature-sensitive zones (at the tip of the sensor). Other temperature sensing devices such as RTDs, bi-metal thermometers, and liquidin-glass thermometers have temperature sensitive zones between one and two inches. Page 3

6 ORDERING INFORMATION Thermowells Example Model Number Style Bore Diameter Immersion Length Root Diameter Tip Diameter Instrument Connection Material Lag Length Options "U" Dim. "Q" Dim. "D" Dim. "T" Dim. TR2 A 045 H C 2 B -AT Written as: TR2A045HC2B-AT (continued on next page) Style Bore Diameter Immersion Length Mounting Style Code Shank Style Code Process Connection Code (inches) Code (inches) Code Threaded T Stepped R Threaded A Flanged RF F Straight S 1/2" NPT B Flanged RTJ J Tapered H 3/4" NPT Flanged FF N 1" NPT C Socket Weld S 1 1/4" NPT D etc Weld In W 1 1/2" NPT E Van Stone V Flanged F Sanitary C 1" Class 150 3A G /2" Class 150 5A H " Class 150 6A J 1" Class 300 3B K etc 1 1/2" Class 300 5B L " Class 300 6B M " Class 600 3C N /2" Class 600 5C P " Class 600 6C R Other 1" Class 900/1500 3D S 1 1/2" Class 900/1500 5D T 2" Class 900/1500 6D Other (Please 1" Class E specify) 1 1/2" Class E 2" Class E Socket Weld and Weld In 3/4" Pipe (1.050 OD) 2 1" Pipe (1.315 OD) 3 1 1/4" Pipe (1.660 OD) 4 1 1/2" Pipe (1.900 OD) 9 1 1/2" Actual (1.500 OD) 5 Van Stone 1" 3 1 1/2" 5 2" 6 Sanitary 1 1/2" Tri Clamp 5 2" Tri Clamp 6 2 1/2" Tri Clamp 7 3" Tri Clamp 8 Other (Please Specify) Thermowell drawings on pages 10 thru 14. Page 4

7 SETE (continued from previous page) W Root Diameter For straight shank wells, leave blank Tip Diameter Instrument Connection Material Lag Length (inches) Code (inches) Code Type Code Type Code (inches) Code A A 1/2" NPT SST A B B 1/2" NPSM SST B C C D D 1/4" NPT 3 Brass C E E 1/4" NPSM SST D F F 321 SST E G G 3/4" NPT SST F H H 3/4" NPSM SST G J J Duplex 2205 H K K 1" NPT 7 CS 1018 J L L 1" NPSM 8 CS A105 K M M Hastelloy B L N N Other (Please Hastelloy C276 M P P specify) Alloy 20 N Q Q Nickel 200 P R R Monel 400 Q S S Inconel 600 R T T Incoloy 800 S U U F5 T V V F9 U W W F11 V Other Y Y F22 W Z Z F91 Y Other (Please specify) Other (Please specify) Titanium Other (Please Specify) Z Options Option Code Option Code Stainless Plug and Chain A Electropolishing G Brass Plug and Chain B Teflon Coating N Special Markings / Tagging T Stellite Coating K Wake Frequency Calculation C Tantalum Sheath S Full Penetration Flange Weldment F Velocity Collar V Dye Penetrant Testing D Include Lap Joint Flange (Van Stone) L Internal Hydro testing I Special Cleaning for Oxygen Service Y External Hydro testing E Tantalum Coating J Positive Material ID (PMI) Testing P Titanium Sheath Z ray of Weldment R Other (Please Specify) Documents available on request: MTR (Material Test Report) COC (Certificate of Compliance) COC-NACE (Certificate of NACE Compliance) COO (Certificate of Origin) Page 5

8 ORDERING INFORMATION Sample Probes Example Model Number Sample Probe Style Bore Diameter Immersion Length Root Diameter Tip Diameter Sampler Connection Material Lag Length Options "U" Dim. "Q" Dim. "D" Dim. "T" Dim. S TS2 B 045 C 1 A -P Written as: STS2B045C1A-P (continued on next page) Style Bore Diameter Immersion Length Mounting Style Code Shank Style Code Process Connection Code (inches) Code (inches) Code Threaded T Straight S Threaded A Flanged RF F Tapered H 1/2" NPT B Flanged RTJ J 3/4" NPT " NPT C 1 1/4" NPT D etc 1 1/2" NPT E Flanged F " Class 150 3A G /2" Class 150 5A H " Class 150 6A J 1" Class 300 3B K etc 1 1/2" Class 300 5B L " Class 300 6B M " Class 600 3C N /2" Class 600 5C P " Class 600 6C R Other 1" Class 900/1500 3D S 1 1/2" Class 900/1500 5D T 2" Class 900/1500 6D Other (Please 1" Class E specify) 1 1/2" Class E 2" Class E Other (Please Specify) Sample probe drawings on page 15. Page 6

9 SETE (continued from previous page) W Root Diameter For straight shank sample probes, leave blank Tip Diameter Sampler Connection Material Lag Length (inches) Code (inches) Code Type Code Type Code (inches) Code A A 1/2" NPT SST A B B 1/4" NPT SST B C C 3/4" NPT D D 1" NPT 7 Brass C E E Other (Please 310 SST D F F specify) 321 SST E G G 347 SST F H H 446 SST G J J Duplex 2205 H K K CS 1018 J L L CS A105 K M M Hastelloy B L N N Hastelloy C276 M P P Alloy 20 N Q Q Nickel 200 P R R Monel 400 Q S S Inconel 600 R T T Incoloy 800 S U U F5 T V V F9 U W W F11 V Other Y Y F22 W Z Z F91 Y Other (Please specify) Other (Please specify) Titanium Other (Please Specify) Z Options Option Special Markings / Tagging Full Penetration Flange Weldment ray of Weldment Dye Penetrant Testing Positive Material ID (PMI) Testing Other (Please Specify) Documents available on request: Code T F R D P MTR (Material Test Report) COC (Certificate of Compliance) COC-NACE (Certificate of NACE Compliance) COO (Certificate of Origin) Page 7

10 ORDERING INFORMATION Protection Tubes Example Model Number Protection Tube Tube Style Process Connection Immersion Length "U" Dim. Material Head Length "H" Dim. Options P R C 150 A 30 -T Written as: PRC150A30-T (continued on next page) Tube Style Process Connection Immersion Length Material Pipe Size Schedule Code Type Code (inches) Code Type Code 40 A 3/4" NPT A SST A 1/4" 80 B 1" NPT B SST B 160 C 1 1/2" NPT C SST D Heavy D 2" NPT D SST E 40 E Welded E SST F 1/2" 80 F 1" Class 150 F SST G 160 G 1 1/2" Class 150 G Duplex 2205 H Heavy H 2" Class 150 H CS A105 K 40 J 3" Class 150 J Hastelloy B L 3/4" 80 K 4" Class 150 K Hastelloy C276 M 160 L 1" Class 300 L Alloy 20 N Heavy P 1 1/2" Class 300 P Nickel 200 P 40 Q 2" Class 300 Q Monel 400 Q etc 80 R 3" Class 300 R Inconel 600 R T 4" Class 300 T Incoloy 800 S Heavy U 1" Class 600 U F5 T 40 V 1 1/2" Class 600 V Other F9 U 1 1/2" 80 W 2" Class 600 W F11 V 160 Y 3" Class 600 Y F22 W Heavy Z 4" Class 600 Z F91 Y Other (Please Specify) Other (Please Specify) Titanium Z Other (Please Specify) Protection tube drawings on page 16. Page 8

11 SETE (continued from previous page) W Head Length Options (inches) Code Option Code Stainless Cap and Chain A Brass Cap and Chain B Special Markings / Tagging T Full Penetration Flange Weldment F Drilled barstock tip (please specify bore diameter) H Electropolishing G Dye Penetrant Testing D Positive Material ID (PMI) Testing P Internal Hydro testing I External Hydro testing E ray of Weldment R Special Cleaning for Oxygen Service Y Other (Please Specify) Other Documents available on request: MTR (Material Test Report) COC (Certificate of Compliance) COC-NACE (Certificate of NACE Compliance) COO (Certificate of Origin) Page 9

12 THERMOWELL ILLUSTRATIONS Threaded Stepped Straight Tapered * Standard head length (Wrench Allowance + Thread Allowance) = 1.75 Limited Space Page 10

13 SETE Socket Weld Stepped Straight Tapered Weld-In Tapered Page 11

14 THERMOWELL ILLUSTRATIONS Flanged Stepped Straight Tapered Page 12

15 SETE Van Stone Stepped Straight Tapered Page 13

16 THERMOWELL ILLUSTRATIONS Sanitary Stepped Straight Tapered Page 14

17 SAMPLE PROBE ILLUSTRATIONS SETE Sample Probe Styles Threaded Flanged Page 15

18 PROTECTION TUBE ILLUSTRATIONS Protection Tube Styles Threaded Flanged Welded Page 16

19 NOTES SETE

20 SETE Products 3255 Executive Blvd, Suite 105 Beaumont, Texas Phone: Fax:

Thermowell Data This Section Contains

Industrial Process and Sensor 2109 Holland Street Alton, Illinois 62002 Phone 618-465-7623 FAX 618-465-7623 WE CAN TAKE THE HEAT! Thermowell Data This Section Contains General Reference Data Please For