1/2-260S-U101/2-316SS

**B** 

## **Series 260S Standard Threaded Well for[1] ⁄4" Diameter Elements** 

## **Application:** 

Standard length,[1] ⁄4" stem, bimetal thermometers; #20-gage thermocouple elements; unarmored liquid-in-glass test thermometers. Other temperaturesensing elements having 0.252" maximum diameter. 

## **Connection Size:** 

1 3 ⁄2, ⁄4 and 1 NPT are standard. Other thread sizes are available upon request. 

**Protective Coatings for Thermowells:** 

- Resist Corrosion      • For Chemical Baths 

- Color-Coded Sensors for Process Control 

• Available in PFA, Epoxy and other materials Consult Sales Department for complete information **Materials:** 

Brass (ASTM B-16); Carbon Steel (C-1018); Stainless Steel A.I.S.I. 304 & A.I.S.I. 316; Monel[®] . Wells are also available in special materials; prices on request. 

## **Cap and Chain Options:** 

For Brass cap, add suffix “ **-CC-BRASS** ” to the end of the model number for additional cost when you order. For 304 SS cap, add suffix “ **-CC** ” to the end of the model number for additional cost. 

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|||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|Series 260S—General Use|
|1 3/4|U  INSERTION LENGTH|
|1|
|THREAD ALLOWANCE|||2 1/2|fe|
|Q DIA.|
|1/2 DIA.|†|NPSM internal|
|1/2|NPSM|†||||WITT|[EERE|0.002|y|pipe thread will  accept both NPT|=|—|E|
|0.260 BORE|and NPS male threads.|
|Pi|P NPT|cog|a,|=|:|
|A STEM LENGTH|1|/4|
|Dimensions: inches|
|To|Order|Visit omega.com/series_260s for Pricing and Details|
|Ext|Stem|Insert.|Shank|
|Thread P|Model Number|Length A|Length U|Dia.Q|
|[1]|⁄2 NPT|1/2-260S-U21/2-(*)|4|2|[1]|⁄2|—|
|1/2-260S-U41/2-(*)|6|4|[1]|⁄2|5⁄8|
|1/2-260S-U71/2-(*)|9|7|[1]|⁄2|5⁄8|
|1/2-260S-U101/2-(*)|12|10|[1]|⁄2|5⁄8|
|5|
|1/2-260S-U131/2-(*)|15|13|[1]|⁄2|⁄8|
|5|
|1/2-260S-U161/2-(*)|18|16|[1]|⁄2|⁄8|
|1/2-260S-U221/2-(*)|24|22|[1]|⁄2|5⁄8|
|[3]|⁄4 NPT|3/4-260S-U21/2-(*)|4|2|[1]|⁄2|—|
|3/4-260S-U41/2-(*)|6|4|[1]|⁄2|3⁄4|
|3/4-260S-U71/2-(*)|9|7|[1]|⁄2|3⁄4|
|3/4-260S-U101/2-(*)|12|10|[1]|⁄2|3⁄4|
|3|
|3/4-260S-U131/2-(*)|15|13|[1]|⁄2|⁄4|
|3|
|3/4-260S-U161/2-(*)|18|16|[1]|⁄2|⁄4|
|3/4-260S-U221/2-(*)|24|22|[1]|⁄2|3⁄4|
|1 NPT|1-260S-U21/2-(*)|4|2|[1]|⁄2|—|
|1-260S-U41/2-(*)|6|4|[1]|⁄2|7⁄8|
|1-260S-U71/2-(*)|9|7|[1]|⁄2|7⁄8|
|1-260S-U101/2-(*)|12|10|[1]|⁄2|7⁄8|
|7|
|1-260S-U131/2-(*)|15|13|[1]|⁄2|⁄8|
|7|
|1-260S-U161/2-(*)|18|16|[1]|⁄2|⁄8|
|1-260S-U221/2-(*)|24|22|[1]|⁄2|7⁄8|

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_*****[Specify material type “]_ _**[304SS]**[” for 304 stainless steel, ]_ _**[“316SS” ]**[for 316 stainless steel, ]_ _**[“CS” ]**[for carbon ] steel or_ _**“BRASS”** for brass. PFA coating available._ 

_**Ordering Example: 3/4-260S-U71/2-304SS** , 304 stainless steel thermowell with[3] ⁄4 NPT external thread,_ 

**Shown close to actual size.** 

_0.260" internal diameter, 7[1] ⁄2" insertion length and a 9" stem length._ **to actual size. For Assistance in Choosing Head and Well Assemblies, See Guide at omega.com These wells are compatible with OMEGA[®] NB1, NB2; PR-12, PR14, and NPT-style probes; as well as DialTemp™ Thermometers. Pressure-Temperature Rating–lb Per Square Inch Increase Response Rate!** | **Temperature — °F Use OT-201 Conductive Silicon Paste. Material 70° 200° 400° 600° 800° 1000° 1200°** ~~eeees~~ Carbon Steel Brass 5000 5200 ~~en~~ 4200 5000 1000 4800 ~~eeen~~ 4600 ~~ee~~ – 3500 – 1500 ~~ee~~ – –– 1-10..................Net **Discount Schedule** 25-100.......................20% ~~es~~ A.I.S.I.-304 ~~es~~ 7000 6200 ~~es~~ 5600 ~~ee~~ 5400 5200 4500 1650 ~~ee~~ 11-24...............10% 101 and up....Consult Sales ~~es Rs~~ A.I.S.I.-316 7000 ~~de~~ 7000 6400 6200 6100 5100 2500 _Discounts apply to similar thermowells._ ~~Re~~ Monel 6500 ns 6000 5400 5300 5200 1500 – 

**B-20**