1-385H-U71/2-304SS

**B** 

## **Series 385H Heavy-Duty Threaded Well for[3] ⁄8" Diameter Elements** 

**Application:** 

Standard length,[3] ⁄8" stem, bimetal thermometers. #14-gage thermocouple elements. Armored liquid-in-glass test thermometers. Other temperaturesensing elements having 0.377" maximum diameter. 

## **Connection Size:** 

1 NPT is 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 when ordering for an additional cost. For 304 SS cap, add suffix “ **-CC** ” to the end of the model number for an additional cost. 

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Series 385H—General Use   External Thread “P”– 1 NPT<br>13/4 U  INSERTION LENGTH<br>1<br>1/2 NPSM  [†] THREAD<br>a ALLOWANCE Q DIA.<br>49/64<br>DIA.<br>±  0.002<br>0.385 BORE<br>bn Pk P NPT †  NPSM internal pipe<br>A   STEM LENGTH 1/4 thread will accept both<br>NPT and NPS male<br>BRASS PLUG & CHAIN (OPTIONAL) NE Dimensions: inches __I| threads.<br>Metric Models<br>Available!<br>See omega.com<br>**----- End of picture text -----**<br>


**To Order** _**Visit omega.com/series_385h for Pricing and Details**_ 

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|---|---|---|---|---|
|**External**<br>**Thread**<br>**P**|**Model Number**|**Stem**<br>**Length**<br>**A**|**Insert**<br>**Length**<br>**U**|**Shank**<br>**Diameter**<br>**Q**|
|1 NPT|**1-385H-U21/2-(*)**<br>**1-385H-U41/2-(*)**<br>**1-385H-U71/2-(*)**<br>**1-385H-U101/2-(*)**<br>**1-385H-U131/2-(*)**<br> **1-385H-U161/2-(*)**<br>**1-385H-U221/2-(*)**|4<br>6<br>9<br>12<br>15<br>18<br>24|21⁄2<br>41⁄2<br>71⁄2<br>101⁄2<br>131⁄2<br>161⁄2<br>221⁄2|11⁄16<br>11⁄16<br>11⁄16<br>11⁄16<br>11⁄16<br>11⁄16<br>11⁄16|



**Shown smaller than actual size.** 

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

_**Ordering Example: 1-385H-U71/2-304SS,** 304 stainless steel thermowell with 1" NPT external thread, 0.385" internal diameter, 7[1] ⁄2" insertion length and a 9" stem length._ 

**For Assistance in Choosing Head and Well Assemblies, See guide on omega.com. These wells are compatible with OMEGA[®] NB1, NB2; PR-12, PR-14, and NPT-style probes, as well as DialTemp™ Thermometers.** 

|**Material**<br>**70°**<br>~~eo~~<br>~~esee~~|**Temperature — °F**<br>~~eo~~|**Temperature — °F**<br>~~eo~~|**Temperature — °F**<br>~~eo~~|**Temperature — °F**<br>~~eo~~|**Temperature — °F**<br>~~eo~~|**Temperature — °F**<br>~~eo~~|
|---|---|---|---|---|---|---|
||**70°**<br>**200°**<br>~~eo~~<br>~~ee~~|**400°**<br>~~eo~~|**600°**<br>~~eo~~|**800° 1000° 1200°**<br>~~eo~~|**800° 1000° 1200°**<br>~~eo~~|**800° 1000° 1200°**|
|Brass<br>5000<br>~~esee~~<br>~~esee~~|5000<br>4200<br>~~ee~~<br>~~eees~~|1000<br>~~es~~|–|–|–|–|
|Carbon Steel<br>5200<br>~~es ee~~<br>~~esee~~<br>~~esee~~|5200<br>5000<br>~~ee~~<br>~~eees~~<br>~~eees~~|4800<br>~~es~~<br>~~es~~|4600|3500|1500|–|
|A.I.S.I. 304<br>7000<br>~~es ee~~<br>~~esee~~<br>~~esee~~|7000<br>6200<br>~~ee es~~<br>~~eees~~<br>~~eees~~|5600<br>~~es~~<br>~~es~~<br>~~es~~|5400|5200|4500|1650|
|A.I.S.I. 316<br>7000<br>~~es ee~~<br>~~esee~~<br>~~ee es~~|7000<br>7000<br>~~ee es~~<br>~~eees~~<br>~~es es~~|6400<br>~~es~~<br>~~es~~<br>~~ss~~|6200<br>~~ss~~|6100|5100|2500|
|Monel<br>6500<br>~~es ee~~<br>~~ee es~~|6500<br>6000<br>~~ee es~~<br>~~es es~~|5400<br>~~es~~<br>~~ss~~|5300<br>~~ss~~|5200|1500|–|



**Increase Response Rate! Use OT-201 Conductive Silicon Paste; see omega.com** 

**Discount Schedule** 1–10.................Net 25–100.......................20% 11–24..............10% 101 and up....Consult Sales 

**See Page B-25 For Maximum Fluid Velocity.** 

**B-26**