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Thermowells

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Carbon Steel

304 & 316 SS

Carbon Steel

304 & 316 SS

Carbon Steel

304 & 316 SS

Brass

Carbon Steel

304 & 316 SS

Monel

Brass

Carbon Steel

304 & 316 SS

Monel

Carbon Steel

304 & 316 SS

Monel

Carbon Steel

304 & 316 SS

Monel

2Sand4S

3S

1S

3Aand3B

1Aand1B

2V & 4V2G &4G

and2F

1V & 3V1G & 3G

and1F

21/2 41/2 71/2 101/2 131/2 161/2 221/2

21/2 41/2 71/2 101/2 131/2 161/2 191/2 221/2

290 143 51.6 26.2 15.9 10.6 7.6 5.7(106) (84.3) (50.6)300 148 53.5 27.2 16.5 11.0 7.9 5.9

(148) (117)261 128 46.7 23.7 14.4 9.5 6.9 5.1

(118) (93.3)

426 192 69.5 35.4 20.5 14.3 7.7(260) (144)449 199 71.9 36.6 21.2 14.8 8.0

(360)

290 143 51.6 26.2 15.9 10.6 5.7(106) (84.3) (50.6)300 148 53.5 27.2 16.5 11.0 5.9

(148) (117)

INSERTION LENGTH —“U”


410 248 91.3 45.7 27.6 18.5 10.0(152) (84.3) (50.6)444 285 95.2 47.6 28.8 19.3 10.4

(211) (117) (70.3)338 226 83.3 41.6 25.2 16.9 9.1

(168) (93.3) (56.0)

290 123 44.9 22.8 13.8 9.3 4.9(106) (71.2) (42.7)300 128 46.4 23.6 14.3 9.6 5.1

(148) (99.3)

MAXIMUM FLUID VELOCITY FEET PER SECOND

WELL TYPE MATERIAL

207 89.1 32.2 16.4 9.9 6.6 4.8 3.6(59.3) (39.8) (23.9)290 123 44.9 22.8 13.8 9.3 6.7 4.9

(106) (71.2) (42.7)300 128 46.4 23.6 14.3 9.6 6.9 5.1

(148) (99.3)261 112 40.6 20.7 12.4 8.3 6.1 4.5

(118) (79.8)

207 102 37.0 18.8 11.4 7.6 5.5 4.1(59.3) (47.6) (28)


WELL TYPE MATERIAL


WELL TYPE MATERIAL

2 4 7 10 13 16 22 INSERTION LENGTH —“U”

404 184 67.0 34.0 20.6 13.7 7.4(129) (71.2) (42.7)430 192 69.7 35.4 21.5 14.3 7.7

(179) (99.3) (59.6)350 168 61 31.0 18.8 12.5 6.7

(143) (79.8) (47.7)

prevent a frequency equality condition.

On the following pages, a recommendedmaximum velocity rating can be foundfor several standard well lengths andmaterials. To simplify the information,ratings given are based on operatingtemperatures of 1000° F. for wells madeof Carbon Steel (C-1018) and StainlessSteel (304 and 316). Values for brasswells are based on 350° F. Operationlimits for Monel wells are based on 900°F service. Slightly higher velocity is pos-

2

sible at lower temperatures. Single val-ues appearing in the velocity tables maybe considered safe for water, steam, airor gas. In shorter insertion lengths, con-sideration is given to the velocity pres-sure effect of water flowing at highervelocities. The values in parenthesis,therefore, represent safe values for waterflow while the unbracketted value may beused for steam, air, gas and similar den-sity fluids.

In some cases, well failures are due, notto the effect of pressure, temperature, orcorrosion, but to the vibrational effects towhich they are subjected. Fluid, flowingby the well, forms a turbulent wake (theVon Karman Trail) with a definite frequen-cy based on well dimensions and fluidvelocity. If the natural frequency of thewell equals the wake frequency, the wellstem will vibrate to destruction and breakoff in the piping. It is, therefore, im- por-tant that the well have sufficient design to

VELOCITY RATINGS OF THERMOWELLS

TTHHEERRMMOOWWEELLLL SSEELLEECCTTIIOONN GGUUIIDDEE


Brass

Carbon Steel

304 & 316 SS

Monel

Brass

Carbon Steel

304 & 316 SS

Monel

Brass

Carbon Steel

304 & 316 SS

Monel

Brass

Carbon Steel

304 & 316 SS

Monel

Brass

Carbon Steel

304 & 316 SS

Monel

319 141 51.0 25.0 15.6 10.4 7.0 5.3(148) (82)358 234 84.5 43.0 26.0 17.4 12.0 9.0

(264) (146)390 248 89.0 45.0 27.5 18.0 13.2 9.9

(355) (203)347 209 75.0 38.0 22.0 15.0 10.0 7.6

(315) (165)

321 129 46.8 23.6 14.5 9.6 6.9 5.1(150) (83.5)410 249 90.3 45.6 27.8 18.5 13.2 9.8

(270) (150)483 272 97.3 49.7 30.4 20.3 14.5 10.7

(350) (208)396 214 77.5 39.2 23.8 16.0 10.3 7.7

(300) (167)

290 150 54.1 27.6 16.7 11.1 8.0 6.0(145) (80) (48)326 192 69.5 35.4 20.5 14.3 10.3 7.7

(260) (144)349 199 71.9 36.6 21.2 14.8 10.7 8.0

(360)316 189 68.1 34.8 20.8 14.0 10.0 7.5

(320) (178)

2A & 4Aand

2B & 4B

4Cand4D

2Cand2D

WELL TYPE 21/2 41/2 71/2 101/2 131/2 161/2 191/2 221/2

INSERTION LENGTH —“U”MAXIMUM FLUID VELOCITY FEET PER SECOND

MATERIAL

WELL TYPE

WELL TYPE

21/2 41/2 71/2 101/2 131/2 161/2 191/2 221/2INSERTION LENGTH —“U”


MATERIAL

21/2 41/2 71/2 101/2 131/2 161/2 191/2 221/2INSERTION LENGTH —“U”


MATERIAL

3Cand3D

1Cand1D

21/2 41/2 71/2 101/2 131/2 161/2 191/2 221/2

354 108 39.4 19.8 12.2 8.1 5.8 4.3(161) (89.5)448 209 75.7 38.4 23.3 15.5 11.1 8.2

(289) (161)490 228 82.5 41.8 25.5 17.1 12.2 9.1

(403) (225)410 179 65.1 33.0 20.1 13.5 8.7 6.5

(322) (178)



WELL TYPE MATERIAL

305 93.8 33.9 17.1 10.5 7.0 5.0 3.7(97.5) (54.1)386 180 65.3 33.0 20.1 13.4 9.6 7.1

(175) (97.2) (58.3)440 197 71.2 36.0 22.0 14.7 10.5 7.8

(243) (135)354 155 56.1 28.4 17.3 11.6 7.5 5.6

(195) (108)

3

VELOCITY RATINGS OF THERMOWELLS



NOMOGRAPH


NOMOGRAPH FOR DETERMINATIONOF CORRECT THERMOWELLCHARACTERISTICS:

Pressure/Temperature/Materialvs.

Bore Size/Stem Outside Diameter

PIV

OT

LIN

E

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1. Values from ASME Boiler and Pressure Vessel Code Section VlIl - Unfired Pressure Vessels,1965.2. ASME Spec. Min. Tensile = 45,000 PSI3. ASME Code (See Note 1), Case 1325 (special ruling)4. ASME Code (See Note 1), Case 1323 (special ruling)5. ASME Code (See Note 1), Case 1321 (special ruling)

The Nomograph and Table 4 below may be applied in calculating wall thickness. The following example demonstrates the use of the nomograph in a typical problem situation.

Problem: To find maximum operating pres- Solution: Maximum allowable stress (Table 4)sure of a thermowell, 304 stainless steel 10,500 PSI. Wall thickness (Min.) = .182.material, with a .385 inch bore and .750 A) Align 10,500 on right scale with .182 onminimum outside diameter whose maximum wall thickness scale and mark intersectionoperating temperature will be 700°F. on pivot line.

B) Align pivot point intersection with correct outside diameter.

C) Read maximum pressure on left scale (5100 PSIG).

TABLE 4 ALLOWABLE STRESS VALUES (PSI)1

0 300 500 700 900 1100 1300

TEMPERATURE °FMATERIAL

Aluminum (1100) 2,350 1,850 – – – – –Aluminum (6061-T6) 6,000 5,000 – – – – –Nickel 10,000 10,000 9,500 – – – –

Steel2

11,250 11,000 10,250 9,000 7,750 6,500 –304 S. Stl. 18,750 13,750 11,400 10,500 10,000 8,250 3,400316 S. Stl. 18,750 16,400 15,500 15,100 11,650 8,500 3,500310 S. StI . 18,750 14,600 12,600 11,300 10,300 9,450 4,000321 - 347 S. Stl. 18,750 15,300 13,500 12,200 11,300 9,100 2,200410 S. StI . 15,000 13,800 12,850 12,050 9,650 2,900 –446 S. Stl. 17,500 16,100 15,000 – – – –A182-F11 16,150 16,150 16,150 16,150 13,100 4,000 –A182-F22 17,500 17,500 17,500 17,500 14,000 4,200 –Copper 6,000 5,000 – – – – –Admiralty Brass 10,000 10,000 – – – – –Monel 400 16,600 13,600 13,100 13,100 8,000 – –Inconel 600 20,000 18,800 18,500 18,500 16,000 3,000 –Incoloy 8003 15,600 12,100 10,400 9,600 9,100 8,800 4,150

Hastelloy B4

25,000 24,750 21,450 – – – –

Hastelloy X5

23,350 18,850 16,000 15,500 15,500 15,500 9,500

NOMOGRAPH



*Values based on allowable stress levels published in the 1956 edition of the A.S.M.E. Boiler Code, Section VIIIand recommendations of ASA B 16, 5-1957.

------------UP --------------TO ------------------2500#------------UP --------------TO----------------------------------2500#------------UP --------------TO ------------------------------------------------2500#------------UP --------------TO ------------------2500#

0° 200° 400° 600° 800° 1000° 1125°

Series F (All)Series G (All)Series V (All)

Carbon Steel304SS316SSMonel

WELL TYPETEMPERATURE — °F.

MATERIAL

*Values based on allowable stress levels published in the 1956 edition of the A.S.M.E. Boiler Code, Section VIII.

*Values based on allowable stress levels published in the 1956 edition of the A.S.M.E. Boiler Code, Section VIII.

1C, 3C,1D, 3D

BrassCarbon Steel

304SS316SSMonel

70° 200° 400° 600° 800° 1000° 1200°

5300 4750 1100 --- --- --- ---5950 5750 5450 5250 4000 1750 ---7800 7050 6400 6150 6000 5190 18757800 7800 7250 7100 6950 5800 27207450 6850 6150 6100 5940 1750 ---


MATERIAL

Series A (All)Series B (All)Series S (All)

2C, 4C2D, 4D

BrassCarbon Steel

304SS316SSMonel

70° 200° 400° 600° 800° 1000° 1200°

5000 4200 1000 --- --- --- ---5200 5000 4800 4600 3500 1500 ---7000 6200 5600 5400 5200 4500 16507000 7000 6400 6200 6100 5100 25006500 6000 5400 5300 5200 1500 ---


MATERIAL

MAXIMUM FLANGE PRESSURE—TEMPERATURE RATING* LBS. PER SQ. INCH

PRESSURE—TEMPERATURE RATING* LBS. PER SQ. INCH

PRESSURE—TEMPERATURE RATING* LBS. PER SQ. INCH

6

PRESSURE — TEMPERATURE RATINGS



STRESS ANALYSISThe maximum pressure that a thermometer wellcan withstand for a given material at a given tem-perature shall be computed from the following:

P = K1S . . . . . . . . . . . . . . . . . . . [4]

whereP = maximum allowable static gage

pressure, psiS = allowable stress for material at

operating temperature as given inthe ASME Boiler and

Pressure Vessel or Piping Codes, psi

K1 = a stress constant obtained from Table 1.3.

The maximum length that a thermometer wellcan be made for a given service is dependentupon both vibratory and steady state stress. Thenecessity for keeping the frequency ratio at 0.8or less imposes one limitation on maximumlength. The other limitation is one of steady state stress considerations, as given by the following equation:

Lmax =

whereLmax = maximum value of L (as shown

in Fig. 1.1) for a given service, in.V = fluid velocity, fpsv = specific volume of the fluid, cu ft

per lb.S = allowable stress for material at

operating temperature as given in the ASME Boiler and Pressure vessel or Piping Codes, psi

P0 = static operating gage pressure,psi

FM = magnification factor as com-puted from Eq [3]

K2, K3 = stress constants obtained fromTable 1.3

whereƒn = natural frequency of the well at use

temperature, cycles per secL = length of well as given in Fig. 1.1, in.E = modulus of elasticity of well material

at use temperature, psig = specific weight of well material at

use temperature, lb per cu in.Kƒ = a constant obtained from Table I .2

The wake or Strouhal frequency is given by:

ƒw = 2.64 . . . . . . . . . . . . [2]

whereƒw = wake frequency, cycles per sec

V = fluid velocity, fpsB = diameter at tip (Fig. 1.1), in.

The ratio of wake to natural frequency(ƒ /ƒ ) shall not exceed 0.8, and when this

condition is met, the Magnification Factor,relationship of dynamic to static amplitude isgiven by:

For r ≤ 0.8 whereF = magnification factor, dimensionless

r = frequency ratio, (ƒw/ƒn), dimen-

sionless

*** Power Test Code Thermometer Wells, J. W. Murdock,Journal of Engineering for Power, Trans. ASME, vol. 81,1959.

TABLE 1.2 TABLE 1.3 VALUES

VALUES OF Kƒ OF STRESS CONSTANTS

FIG. 1.1 POWER TEST CODE

THERMOMETER WELLS

Well LengthL, in. Kƒ Stress Constant

2-1/2 2.06 K1 0.412

4-1/2 2.07 K2 37.5

7-1/2 2.08 K3 0.116

10-1/2 2.0916 2.0924 2.09

Nominal Size ofDimension Sensing Element

1/4A (minimum) 13/16B (minimum) 5/8d (minimum) 0.254d (maximum) 0.262

TABLE 1.1 WELL DIMENSIONS, IN IN.

√ v(S – K3P0)

1 + FM

K2V

[1]

VB

√ gL2

ƒn

The purpose of this design procedure is toenable the user to determine if a well selected forthermometry considerations is strong enough towithstand specific application conditions of tem-perature, pressure, velocity, and vibration. Wellfailures are caused by forces imposed by staticpressure, steady state flow, and vibration.Separate evaluations of each of the above effectsshould be made in order to determine the limitingcondition. This design procedure does not allowfor effects due to corrosion or erosion.

The natural frequency of a well designed inaccordance with Fig. 1.1 and of the dimensionsgiven in Table 1.1 is given by the following equa-tion:

7

DESIGN PROCEDURE ***TTHHEERRMMOOWWEELLLL SSEELLEECCTTIIOONN GGUUIIDDEE

(ƒ /ƒn)2

1 – (ƒ /ƒn)2

r2

1 – r2

Kƒ E=. . . . . . .

=w

w

w n

. . . . . . [3]F =M

M

.. . . . . .[5]


CHEMICAL

CERAMIC

CEMENTAND LIME

INDUSTRY APPLICATION CONDITIONS MATERIAL

Kilnhot end (clinker) .................... to 2600 °F.......................... C30 Ceramiccool end (flue) ........................ 600-2000 °F ...................... 28% Chrome Iron - Inconel 601

Clinker cooler ...................................... to 1200 °F.......................... Cerampak - 28% Chrome Iron - Inconel 601Exit Flue .............................................. .......................................... Inconel 601, 28% Chrome Iron - Silicon Carbide, Silicon Nitride.Dryers ......................... ...................... .......................................... Carbon Steel - Silicon Carbide - Silicon Nitride - Wrought IronKilns—Brick.......................................... 1800-2200 °F .................... C30 Ceramic - lnconel 600 - Silicon Carbide - Silicon NitrideVitreous enameIing ............................ 1600-2000 °F .................... Inconel 600 - Firebrick - 28 % Chrome Iron - SiIicon Carbide - SiIicon NitrideGrinding wheels .................................. to 500 °F .......................... Wrought IronAbrasive grits ...................................... to 2300 °F.......................... C30 CeramicPorcelain pottery ................................ 2000-2400 °F .................... C30 CeramicAcetate Solvents ................................ Crude or Pure .................. Monel - NickelAcetic Acid .......................................... 10%-70 °F ........................ 304 Stainless Steel

50%-70 °F .................. 304 Stainless Steel50%-212 °F ................ 316 Stainless Steel - Monel99%-70 °F .................. Monel99%-212 °F ................ Monel

Acetic Anhydride Acetone .................. ........................................... Monel - NickelAcetone .............................................. 212 °F .............................. 304 Stainless SteelAcetylene ............................................ ........................................... 304 Stainless Steel - Monel - NickelAlcohol Ethyl ...................................... 70 °F ................................ 304 Stainless Steel

212 °F ........................ 304 Stainless SteelAlcohol Methyl...................................... 70 °F ................................ 304 Stainless Steel

212 °F ........................ 304 Stainless SteelAluminum ............................................ Molten .............................. Cast IronAluminum Acetate .............................. Saturated .......................... 304 Stainless SteelAluminum Chloride ............................ ........................................... Hastelloy BAluminum Sulphate ............................ 10%-70 °F ........................ 304 Stainless Steel

Saturated 70 °F .......... 304 Stainless Steel10%-212 °F ................ 316 Stainless SteelSaturated 212 °F ........ 316 Stainless Steel

Ammonia ............................................ All concentrations 70 °F .. 304 Stainless Steel - 316 Stainless SteelAmmonia Hydroxide ......................... .. .......................................... 2024-T4 Aluminum - 304 Stainless Steel - 316 Stainless SteelAmmonia Liquors ................................ ........................................... 2024-T4 Aluminum - 304 Stainless Steel - 316 Stainless SteelAmmonia Phosphate

(Dibasic) ................................ ........................................... Monel(Monobasic) ............................ ........................................... Phosphor Bronze(Tribasic) ................................ ........................................... Monel

Ammonium Chloride .......................... All Concentrations 212 °F. 316 Stainless SteelAmmonium Nitrate .............................. All Concentrations 70 °F.... 304 Stainless Steel

All Concentrations 212 °F. 304 Stainless SteelAmmonium Sulphate .......................... 5%-70 °F .......................... 304 Stainless Steel

10%-212 °F ................ 316 Stainless SteelSaturated 212 °F ........ 316 Stainless Steel

Amylacetate ........................................ ........................................... Monel - 304 Stainless SteelAniline ................................................ All Concentrations 70 °F.... 304 Stainless Steel - MonelAsphalt ......................... ...................... .......................................... C1018 Steel - 304 Stainless Steel - Monel - NickelBarium Carbonate................................ 70 ° F ................................ 304 Stainless SteelBarium Chloride .................................. 5%-70 °F .......................... Monel

Saturated 70 °F .......... Monel - Hastelloy CAqueous - Hot ............ 316 Stainless Steel - Hastelloy C

Barium Hydroxide ................................ ........................................... C1018 SteelBenzaldehyde .................................... ........................................... C1018 SteelBenzene .............................................. 70 °F ................................ 304 Stainless SteelBenzine .............................................. ........................................... C1018 Steel - 2024-T4 Aluminum - Monel - Inconel 600Benzol ................................................ Hot .................................... 304 Stainless SteelBoracic Acid ........................................ 5% Hot or Cold ................ 304 Stainless SteelBrines ......................... ...................... .......................................... MonelBromine .............................................. 70 °F ................................ Tantalum Sleeved

Dry 125 °F .................. MonelButadiene ............................................ ........................................... Brass - 304 Stainless SteelButane ................................................ 70°F .................................. 304 Stainless SteelButhlacetate ........................................ ........................................... MonelButyl Alcohol ...................................... ........................................... Copper - 304 Stainless SteelButylenes ............................................ ........................................... C1018 Steel - Phosphor Bronze

reaction and other variables. Standardmaterials are recommended whereverpossible. Service may vary, however,in industrial use as a result oftemperature, pressure, concentrationand impurities in the corrosive medium.

While the recommendations cannotguarantee service, they will serve as aneffective guide. Thermo SensorsCorporation can provide consultationfor special applications upon request.

Thermowell materials for variousaverage applications are listed in thefollowing table. The list has beencarefully prepared and takes intoconsideration such factors ascontamination, electrolysis, catalytic

8

THERMOWELL MATERIAL GUIDE

TTHHEERRMMOOWWEELLLL SSEELLEECCTTIILLOONN GGUUIIDDEE


Butyric Acid .............................................. 5%-70 °F .................... 304 Stainless Steel5%-150 °F ........ 304 Stainless SteelBoiling .............. Hastelloy C

Calcium Bisulfite ...................................... 70 °F .......................... 316 Stalnless Steel - Hastelloy CCalcium Chlorate ...................................... Dilute 70 °F .............. 304 Stainless Steel

Dilute 150 °F .... 304 Stainless SteelCalcium Hydroxide .................................. 10%-212 °F . .............. 304 Stainless Steel

20%-212 °F ...... 316 Stainless Steel50%-212 °F ...... 316 Stainless Steel - Hastelloy C

CarbolicAcid ............................................ All-212 °F .................. 316 Stainless SteelCarbon Dioxide ...................................... Dry ............................ C1018 Steel - 2024-T4 Aluminum - Monel - Brass

Wet .................... 304 Stainless Steel - Monel - NickelCarbon Tetrachloride ................................ 10%-70 °F ................ MonelChlorex Caustic ........................................ ...................... ............ 316 Stainless SteelChlorine Gas ............................................ Dry 70 °F.................... 316 Stainless Steel

Moist 70 °F ........ Hastelloy CMoist 212 °F ...... Hastelloy C

Chromic Acid ............................................ 5%-70 °F .................... 304 Stainless Steel10%-212 °F ........ 316 Stainless Steel - Hastelloy C50%-212 °F ...... 316 Stainless Steel - Hastelloy C

Citric Acid ................................................ 15%-70 °F ................ 304 Stainless Steel15%-212 °F ...... 316 Stainless Steel - Hastelloy C

Concentrated 212 °F 316 Stainless Steel - Hastelloy CCoal Tar .................................................... Hot.............................. 304 Stainless SteelCoke Oven Gas ........................................ ...................... ............ 2024-T4 AluminumCopper Nitrate .......................................... ...................... ............ 304 Stainless Steel - 316 Stainless SteelCopper Sulphate ...................................... ...................... ............ 304 Stainless Steel - 316 Stainless SteelCore Oils .................................................. ...................... ............ 316 Stainless SteelCottonseed Oil .......................................... ...................... ............ C1018 Steel - 304 Stainless Steel - Monel - NickelCreosols .................................................. ...................... ............ 304 Stainless SteelCreosote Crude ........................................ ...................... ............ C1018 Steel - 304 Stainless Steel - Monel - NickelCyanogen Gas ........................................ ...................... ............ 304 Stainless SteelDetergents ................................................ ...................... ............ 304 Stainless SteelDowtherm ................................................ ...................... ............ C1018 SteelEpsom Salts ............................................ Hot and Cold .............. 304 Stainless SteelEther ........................................................ 70 °F .......................... 304 Stainless SteelEthyl Acetate ............................................ ...................... ............ 304 Stainless Steel - MonelEthyl Chloride .......................................... 70 °F .......................... 304 Stainless Steel

Dry to 500 °F ...... C1018 SteelEthyl Sulphate .......................................... 70 °F .......................... MonelEthylene Glycol ........................................ ...................... ............ C1018 Steel - 304 Stainless SteelFerric Chloride .......................................... 1%-70 °F .................... 316 Stainless Steel

5%-70 °F ............ Tantalum Sleeved5%-Boiling ........ Tantalum Sleeved - Hastelloy C

Ferric Sulphate ........................................ 5%-70 °F .................... 304 Stainless SteelFerrous Sulphate ...................................... Dilute 70 °F .............. 304 Stainless SteelFluorine (Anhydrous) ................................ 100 °F ...................... 304 Stainless SteelFormaldehyde .......................................... ...................... ............ 304 Stainless Steel - 316 Stainless SteelFormic Acid .............................................. 5% 70 °F .................... 316 Stainless Steel

5%-150 °F ........ 316 Stainless SteelFreon ........................................................ ...................... ............ C1018 SteelFurfural .................................................... 450 °F ...................... 316 Stainless SteelGallic Acid ................................................ 5%-70 °F .................... Monel

5%-150 °F ........ MonelGasoline .................................................. 70 °F .......................... C1018 Steel - 304 Stainless SteelGlucose .................................................... 70 °F .......................... 304 Stainless SteelGlue .......................................................... Ph 6-8 ...................... C1018 Steel - 2024-T4 Aluminum - 304 Stainless Steel - Monel - NickelGlycerine .................................................. 70 °F .......................... 304 Stainless Steel - BrassGlycerol .................................................... . .................................. 304 Stainless Steel - BrassHydrobromic Acid ...................................... 48%-212 °F .............. Hastelloy C - Hastelloy BHydrochloric Acid ...................................... 1%-70 °F .................... Hastelloy C

1%-212 °F ........ Hastelloy B5%-70 °F ............ Hastelloy C5%-212 °F ........ Hastelloy B25%-70 °F ........ Hastelloy B25%-212 °F ...... Hastelloy B

Hydrocyanic Acid ...................................... ...................... ............ 304 Stainless SteelHydrofluogilicic Acid .................................. 40%-212 °F .............. MonelHydrofluoric Acid ...................................... ...................... ............ Hastelloy CHydrogen Chloride .................................. Dry 500 °F.................. 304 Stainless SteelHydrogen Fluoride .................................... Dry 175 °F.................. C1018 SteelHydrogen Peroxide.................................... 70 °F .......................... 304 Stainless Steel - 316 Stainless Steel

212 °F ................ 316 Stainless SteelHydrogen Sulphide.................................... Wet and Dry .............. 316 Stainless Steellodine ........................................................ 70 °F .......................... Tantalum Sleeved

continued

CHEMICAL


9

THERMOWELL MATERIAL GUIDE (Cont.)

TTHHEERRMMOOWWEELLLL SSEELLEECCTTIILLOONN GGUUIIDDEE


continued

CHEMICAL


Kerosene ................................................ 70 °F .......................... C1018 Steel - 304 Stainless steelLactic Acid .............................................. 5%-70 °F .................... 304 Stainless Steel

5%-150 °F .................. 316 Stainless Steel10%-212 °F ................ Tantalum Sleeved

Lacquer .................................................. 70 °F .......................... 304 Stainless Steel - 316 Stainless SteelLatex .................... ................................ .................................... C1018 SteelLime Sulphur .......................................... ....... ............................ C1018 Steel - 304 Stainless Steel - 316 Stainless Steel - MonelLinseed Oil .............................................. 70 °F .......................... C1018 Steel - 304 Stainless SteelMagnesium Chloride .............................. 5%-70 °F .................... Monel

5%-212 °F .................. NickelMagnesium Hydroxide (or Oxide) ............ All-75%........................ 304 Stainless SteelMagnesium Sulphate .............................. Hot & Cold .................. 304 Stainless Steel - MonelMalic Acid ................................................ Hot & Cold .................. 316 Stainless SteelMercuric Chloride .................................... 10%-75 °F .................. Hastelloy CMercury .................................................. 100%-700 °F .............. C1018 SteelMethane .................................................. 70 °F .......................... C1018 SteelMethyl Chloride ........................................ Dry 75 °F .................... C1018 SteelMethylene Chloride ................................ All-212 °F .................. 304 Stainless SteelMilk ................... .................................. .................................... 304 Stainless Steel - NickelMixed Acids (Sulphuric & Nitric) ............ All ................................ Carpenter #20Molasses ................................................ ................... ................ 304 Stainless Steel - Monel - NickelMuriatic Acid ............................................ 70 °F .......................... Tantalum SleevedNaphtha .................................................. 70 °F .......................... 304 Stainless SteelNatural Gas .............................................. 70 °F .......................... 304 Stainless SteelNeon .................................................... 70 °F .......................... 304 Stainless SteelNickel Chloride ........................................ 70 °F .......................... 304 Stainless SteelNickel Sulphate ........................................ Hot & Cold .................. 304 Stainless SteelNitric Acid ................................................ 5%-70 °F .................... 304 Stainless Steel

20%-70 °F .......... 304 Stainless Steel50%-70 °F .......... 304 Stainless Steel50%-212 °F ........ 304 Stainless Steel65%-212 °F ........ 316 Stainless Steel

Concentrated 70 °F ...... 304 Stainless SteelConcentrated 212 °F .... Tantalum Sleeved

Nitrobenzene .......................................... 70 °F .......................... 304 Stainless SteelOleic Acid ................................................ 70 °F .......................... 316 Stainless SteelOleum .................................................... 70 °F .......................... 316 Stainless SteelOxalic Acid .............................................. 5%-Hot & Cold .......... 304 Stainless Steel

10%-212 °F .......... MonelOxygen .................................................... 70 °F .......................... C1018 Steel

Liquid Oxygen ...... 304 Stainiess SteelElevated Temperatures 304 Stainless Steel

Palmitic Acid ............................................ ............. ...................... 316 Stainless SteelPentane .................................................. ................... ................ 304 Stainless SteelPetroleum Ether ...................................... ....................... ............ 304 Stainless SteelPhenol ............................................................................................. 304 Stainless Steel - 316 Stainless SteelPhosphoric Acid ...................................... 1 %-70 °F .................... 304 Stainless Steel

5%-70 °F................ 304 Stainless Steel10%-70 °F ............ 316 Stainless Steel10%-212 °F .......... Hastelloy C30%-70 °F ............ Hastelloy B30%-212 °F ........ Hastelloy B

85%-70 °F ............ Hastelloy B85%-212 °F .......... Hastelloy B

Photographic Bleaching .......................... All-100 °F .................. 304 Stainless SteelPicric Acid ................................................ 70 °F .......................... 304 Stainless SteelPotassium Bromide ................................ 70 °F .......................... 316 Stainless SteelPotassium Carbonate .............................. 1%-70 °F .................... 304 Stainless SteelPotassium Chlorate ................................ 70 °F. .......................... 304 Stainless SteelPotassium Chloride ................................ 5%-70 °F .................... 304 Stainless Steel

5%-212 °F ............ 304 Stainless SteelPotassium Hydroxide .............................. 5%-70 °F .................... 304 Stainless Steel

25%-212 °F .......... 304 Stainless Steel50%-212 °F .......... 316 Stainless Steel

Potassium Nitrate .................................... 5%-70 °F .................... 304 Stainless Steel5%-212 °F ............ 304 Stainless Steel

Potassium Permanganate ...................... 5%-70 °F .................... 304 Stainless SteelPotassium Sulphate ................................ 5%-70 °F .................... 304 Stainless Steel

5%-212 °F ...................... 304 Stainless SteelPotassium Sulphide.................................. 70 °F .......................... 304 Stainless SteelPropane.................................................... .................................... C1018 Steel - 304 Stainless SteelPyrogallic Acid.......................................... .................................... 304 Stainless SteelQuinine Bisulphate .................................. Dry ............................ 316 Stainless SteelQuinine Sulphate .................................... Dry ............................ 304 Stainless Steel





Resin ........................................................ ........................................ 304 Stainless SteelRosin ........................................................ Molten .............................. 304 Stainless Steel - 316 Stainless SteelSea Water ................................................ .......................................... MonelSal Ammoniac .......................................... .......................................... MonelSalicylic Acid ............................................ .......................................... NickelShellac ...................................................... .......................................... 304 Stainless SteelSoap and Detergents .............................. 70 °F ................................ 304 Stainless Steel - 316 Stainless SteelSodium Bicarbonate ................................ All Concentrations 70 °F 304 Stainless Steel

5%-150 °F ................ 304 Stainless SteelSodium Bisulphate .................................... 20%-212 °F .................... 304 Stainless SteelSodium Bisulphite .................................... 20%-212 °F .................... 304 Stainless SteelSodium Carbonate .................................. 5%-70 °F .......................... 304 Stainless Steel

5%-150 °F .............. 304 Stainless Steel40%-212 °F ............ 316 Stainless Steel

Sodium Chloride ...................................... 5%-70 °F .......................... 316 Stainless Steel5%-150 °F .............. 316 Stainless Steel30%-300 °F .............. MonelSaturated 70 °F ........ 316 Stainless SteelSaturated 212 °F .... 316 Stainless Steel

Sodium Chromate .................................... All 212 °F ........................ 316 Stainless SteelSodium Cyanide ...................................... All 212 °F ........................ 304 Stainless SteelSodium Fluoride ...................................... 5%-70 °F .......................... MonelSodium Hydroxide .................................... .......................................... 304 Stainless Steel - 316 Stainless SteelSodium Hypochlorite ................................ 5% Still ............................ 316 Stainless Steel

10%-75 °F ................ Hastelloy CSodium Nitrate .......................................... Fused .............................. 316 Stainless SteelSodium Peroxide ...................................... .......................................... 304 Stainless SteelSodium Phosphate .................................. .......................................... C1018 SteelSodium Silicate ........................................ .......................................... C1018 SteelSodium Sulphate ...................................... 70 °F ................................ 304 Stainless Steel - 316 Stainless SteelSodium Sulphide ...................................... 70 °F ................................ 316 Stainless SteelSodium Sulphite ...................................... 150 °F .............................. 304 Stainless SteelSodium Thiosulphate ................................ All 212 °F ........................ 304 Stainless SteelSteam ...................................................... .......................................... 304 Stainless SteelStearic Acid .............................................. .......................................... 304 Stainless Steel - 316 Stainless SteelSulphur Dioxide ........................................ Moist Gas - 70 °F ............ 316 Stainless Steel

Gas - 575 °F ............ 304 Stainless SteelSulphur ...................................................... Dry - Molten...................... 304 Stainless Steel

Wet ............................ 316 Stainless SteelSulphur Chloride ...................................... Dry 75 °F ........................ 316 Stainless SteelSulphur Trioxide ........................................ Dry 500 °F ........................ 304 Stainless Steel - 316 Stainless SteelSulphuric Acid .......................................... 5%-70 °F .......................... Hastelloy B - Carpenter #20

5%-212 °F ................ Hastelloy B - Carpenter #2010%-70 °F ................ Hastelloy B - Carpenter #2010%-212 °F .............. Hastelloy B50%-70 °F .............. Hastelloy B50%-212 °F ............ Hastelloy B90% 70 °F ................ Hastelloy B90%-212 °F ............ Hastelloy B - Carpenter #20Fuming 175 °F ........ Hastelloy C

Sulphurous Acid ...................................... 20%-75 °F ...................... 316 Stainless SteelTannic Acid .............................................. 70 °F 5% -10% ................ 304 Stainless Steel

40%-70 °F ................ Hastelloy BTartaric Acid ............................................ 70 °F ................................ 304 Stainless Steel

150 °F ...................... 316 Stainless SteelTin ............................................................ Molten .............................. Cast IronTitanium Tetrachloride .............................. All 75 °F .......................... 316 Stainless SteelToluene .................................................... .......................................... C1018 Steel - Phosphor Bronze - MonelTrichloracetic Acid .................................... All75 °F ............................ Hastelloy BTrichloroethylene ...................................... 70 °F ................................ C1018 Steel

Dry 300 °F .............. MoneITurpentine.................................................. .......................................... 304 Stainless Steel - 316 Stainless SteelVarnish .................................................... .......................................... C1018 Steel - 304 Stainless SteelVegetable Oil ............................................ .......................................... C1018 Steel - 304 Stainless Steel - MonelVinegar ...................................................... .......................................... 304 Stainless SteelWater-Acid ................................................ .......................................... 304 Stainless SteelWater Distilled (Condensate) .................. .......................................... Brass - C1018 Steel - 304 Stainless Steel - MonelWater ........................................................ Fresh ................................ Copper - C1018 Steel - 304 Stainless Steel - Monel - Brass

Salt .......................... 2024-T4 Aluminum - Phosphor Bronze - Brass - MonelWhiskey & Wine ...................................... .......................................... 304 Stainless Steel - NickelXylene ...................................................... .......................................... CopperZinc Chloride ............................................ .......................................... Monel - Hastelloy BZinc .......................................................... Molten .............................. Cast IronZinc Sulphate .......................................... 5%-70 °F .......................... 304 Stainless Steel

Saturated 70 °F ........ 304 Stainless Steel25%-212 °F................ 316StainlessSteel

continued

CHEMICAL


11



NON-

FERROUS

METALS

IRON

AND

STEEL

HEAT

TREATING

GLASS

GAS

FOOD


Baking Ovens .......................................... 400-900 °F ................ Wrought Iron - Bare ThermocoupleChar Retort, Sugar .................................. 500-700 °F ................ Wrought IronVegetables and Fruit ................................ 200-300 °F ................ 304 Stainless SteelProducer gas ............................................ .................................... 28% Chrome Iron - Inconel 601Water gas

carburetor .................................... .................................... Inconel 600 - 28% Chrome Ironsuperheater .................................. .................................... Inconel 600.- 28% Chrome Iron

Tar stills .................................................... .................................... C1018 SteelMelting tank

roof &wall .................................... to 2400 °F .................. C30 Ceramicflues and checkers ...................... to 1800 °F .................. Inconel 600 - 28% Chrome Iron - Wrought Iron

Forehearth and feeder .............................. to 2200 °F .................. Bare Platinum ThremocoupleLehr .................................................... 300-500 °F ................ Wrought IronOpen Hearth Roof .................................... .................................... LT-1Annealing ................................................ to 1200 °F .................. Wrought Iron

1300-2000 °F ...... Inconel 600 - Inconel 601 - 28% Chrome Iron (for sulphur atmospheres)Hardening

open fired or electric heated ...... to 1500 °F ................ Wrought Ironto 2000 °F .......... Inconel 600 - 28% Chrome Ironto 2400 °F .......... C30 Ceramic

H. S. Tool Steel ............................ to 2350 °F .................. Inconel 600 - NickelSalt Baths ....................................

Neutral .................................. to 2000 °F .................. 28% Chrome IronHigh Speed .......................... to 2350 °F .................. C30 Ceramic

Lead Pot ...................................... to 2000 °F .................. 28% Chrome IronCyanide Pot .................................. 1750 °F ...................... Inconel 600 - Nickel

2350 °F ................ NickelLavite Pot .................................... 2400 °F ...................... Inconel 600 - 28% Chrome IronCarburizing

gas ...................................... to 2000 °F .................. Inconel 601 - 28% Chrome Ironcyanide pot .......................... .................................... Nickel

Nitriding ...................................... to 1000 °F .................. 28% Chrome IronQuench Oil .................................. 900 °F ........................ Wrought Iron

12

Blast Furnacedown comer.................................. .................................... Inconel 601 - 28% Chrome Iron - Silicon Carbide - Silicon Nitridestove dome .................................. 1800-2300 °F ............ Silicon Carbide - Silicon Nitridestock trunk .................................... .................................... Inconel 600stove outlet flue .......................... .................................... Wrought Ironhot blast main .............................. 900-1600 °F .............. Inconel 601 - 28% Chrome Iron

Open Hearthflues and stack ............................ to 1800 °F .................. Inconel 601 - 28% Chrome Iron - LT-1checkers ...................................... to 2200 °F .................. Inconel 601 - LT-1

Waste Head Boilers ................................ to 1600 °F .................. Inconel 601 - 28% Chrome IronSoaking Pits ............................................ 2000 °F ...................... Inconel 601 - 28% Chrome Iron - Silicon Carbide - Silicon Nitride

Over 2000 °F ........ Silicon Carbide - C30 Ceramic - Silicon NitrideBillet and Slab Furnace ............................ 2000 °F ...................... Inconel 601 - 28% Chrome Iron

Over 2000 °F ........ Silicon Carbide - C30 Ceramic - Silicon NitrideForging Furnace ...................................... 2000-2400 °F ............ Silicon Carbide - C30 Ceramic - Silicon NitrideAnnealing ................................................ .................................... Inconel 600 - Inconel 601 or 28% Chrome IronBright Annealing (for sulphur atmospheres)

batch ............................................ .................................... Inconel 600continuous .................................. .................................... C30 Ceramic - Silicon Carbide - Silicon Nitride

Pickling .................................................... .................................... Lead Sheath - Silicon Carbide - Silicon NitrideGalvanizing .............................................. .................................... XH Seamless Steel - Silicon Carbide - Silicon NitrideTinning

tin pot .......................................... .................................... Seamless Steel - 28% Chrome Iron - Silicon Carbide - Silicon Nitridepalm oil ........................................ .................................... 304 Stainless Steel

Vacuum Melting (Induction Melting) .......... to 3200 °F .................. C98 CeramicAluminum

melting pot .................................. .................................... Cast Iron (Washed) - Silicon Carbide - Silicon Nitridepouring ladles .............................. 1300 to 1400 °F ........ Open end thermocouple assembliesfurnaces ...................................... .................................... 304 Stainless Steel Cerampakheat treating ................................ 950 °F ........................ Wrought Iron - 304 Stainless Steel Cerampakdie casting .................................. 800-1300 °F .............. Cast Iron - Wrought Iron - Silicon Carbide

Magnesiummelt .............................................. .................................... Wrought Irondie casting .................................... .................................... Wrought Ironladle.............................................. .................................... Wrought Iron

Leadpots .............................................. 1000 °F ...................... Wrought Iron

1500 °F ................ 28% Chrome Iron - Silicon Carbide - Silicon Nitride




SMELTINGAND

REFINING

MISC.

POWER

AND

HEAT

PETROLEUM

PAPER

NOTES: (This space is provided for you to make note of specific materials for your applications determined from yourexperience.)

Brassladle .......................................... ....................... .............. LT-1 - Silicon Carbide - Silicon Nitride - Immersion T/Cbillet and forging ...................... ....................... .............. Inconel 601 - 28% Chrome Ironanneal ...................................... ....................... .............. Wrought Iron - 304 Stainless Steel Cerampak

Coppermolten ...................................... ....................... .............. Silicon Nitride- LT-1smelting & ore roasters ............ ................... .................. Inconel 601 - 28% Chrome Iron - C30 Ceramic - Silicon Carbide - Silicon Nitride

Tinpot ............................................ 500 °F .......................... XH Seamless Steel - Silicon Carbide - Silicon Nitride

Zincdie casting ................................ 800 °F .......................... XH Seamless Steel - Silicon Carbide - Silicon Nitride

Digesters .............................................. 220-300 °F .................. 316 Stainless Steel - Tantalum SleevedSulphur Burners .................................... 900-1400 °F ................ Inconel 601 - 28% Chrome Iron - LT-1Cracking lines ........................................ 950 °F .......................... 304 Stainless SteelDewaxing................................................ minus 20 °F .................. 304 Stainless SteelFractionating column top tower .............. 150-500 °F .................. 304 Stainless SteelReaction chamber .................................. 850-890 °F .................. 304 Stainless SteelTube still inlet ........................................ 575-700 °F .................. 304 Stainless SteelTube still bridge wall .............................. 1500-2200 °F .............. Inconel 600Fire Box ................................................ 1800-2200 °F .............. Inconel 600Flue gas ................................................ 450-1000 °F ................ 304 Stainless Steel Cerampak

Wrought Iron - 28% Chrome IronPreheaters.............................................. 200-500 °F .................. Wrought Iron - 304 Stainless Steel CerampakSteam lines .......................................... 300-950 °F .................. 304 Stainless SteelPowdered coal air ................................ 500 °F .......................... 304 Stainless SteelDiesel engine exhaust............................ 600 °F .......................... 304 Stainless SteelWater lines ................................................................... .................. C1018 Carbon SteelRoasting sulphur ores .......................... 700-1900 °F ................ 28% Chrome Iron - Inconel 601Zinc retort preheater ............................ 1300-2400 °F .............. C30 CeramicZinc spelter ............................................ 700-900 °F .................. 28% Chrome Iron .Asphalt mixing............................................................... .................. Wrought Iron - Sand ThermocoupleIncinerator .............................................. to 2000 °F .................... Inconel 601 - 28% Chrome Iron

over 2000 °F .......... C30 Ceramic - SiIicon Carbide - SiIicon Nitride

NON-

FERROUS

METALS

CONTINUED


13




“T”2"3"3"3"3"3"

“U”

21⁄2"

41⁄2"

71⁄2"

101⁄2"

131⁄2"

191⁄2"

STANDARD“T” & “U”

DIMENSIONS:

–– – –– – –

SPECIFYIN INCHES

SELECTMATERIAL

CODE FROMPAGE 19

4B.385

3B7⁄8".2601"

NPT49⁄64"

2B49⁄64".385

1B3⁄4".2603⁄4"

NPT

“T”MATERIAL “U”TYPE

ORDERING CODEBORE QPROCESS

THREAD

SPECIFYIN

INCHES– – – – – –

–STANDARDLENGTHS:21⁄2", 41⁄2 ",

71⁄2", 101⁄2",

131⁄2", 161⁄2",

221⁄2"

SELECTMATERIAL

CODE FROMPAGE 19

4A.385

3A7⁄8".260

2A49⁄64".385

1A3⁄4".260

1"NPT

3⁄4"

NPT

49⁄64"

“U”MATERIALTYPE


THREAD

EXAMPLE: 2B34-T3-41⁄23⁄4" NPT — PROCESS THREAD

.385"— BORE304 Stainless Steel — Material

“T” = 3" “U” = 41⁄2"

Series BThreaded Straight StemLagging Thermowells

EXAMPLE: 2A36-101⁄23⁄4" NPT — PROCESS THREAD

.385"— BORE316 Stainless Steel — Material

“U” = 101⁄2"

Series AThreaded Straight StemThermowells

SERIES A AND B

TTHHEERRMMOOWWEELLLLSS


“T”2"3"3"3"3"3"

“U”

21⁄2"

41⁄2"

71⁄2"

101⁄2"

131⁄2"

191⁄2"

STD. “T” & “U”COMBI-

NATIONS::

– – – – – – –

SPECIFYIN INCHES

SELECTMATERIAL

CODE FROMPAGE 19

11⁄16"

11⁄16"

7⁄8"

7⁄8"

5⁄8"

5⁄8"

49⁄64"

49⁄64"

4D

3D

2D

1D

.385

.260

.385

.260

1"NPT

3⁄4"

NPT

“T” “U”D

TYPE MATERIAL


THREAD

SPECIFYIN

INCHES– – – – – –

STANDARDLENGTHS:

21⁄2", 41⁄2 ",

71⁄2", 101⁄2",

131⁄2",

161⁄2",

221⁄2"

SELECTMATERIAL

CODE FROMPAGE 19

11⁄16"

11⁄16"

5⁄8"

49⁄64" 4C

3C

.385

.2601"

NPT

7⁄8"

7⁄8" 5⁄8"

49⁄64" 2C

1C

.385

.2603⁄4"

NPT

“U”D

TYPE MATERIAL


THREAD

EXAMPLE: 4D40-T2-21⁄21" NPT — PROCESS THREAD.385"— BORE

Q = 11⁄16" D = 49⁄64"

410 Stainless Steel — Material

“T” = 2" “U” = 21⁄2"

Series DThreaded Tapered StemLagging Thermowells

EXAMPLE: 3C60-71⁄21" NPT — PROCESS THREAD.260"— BORE

Q = 11⁄16" D = 5⁄8"

Inconel 600 — Material

“U” = 71⁄2"

Series CThreaded Tapered StemThermowells

SERIES C AND D



BORE

LAGGING: The 2.25" Head Dimension shown is standard. Ifadditional length (LAG) is needed within the 2.25"dimension, specify by placing a “-T” followed byadditional length required (in inches) betweenthe material code and “U” dimension code.

EXAMPLE: 2FT36-T3-10-1x150 RF

.385"

.385"

.260"

.260"

SPECIFYIN

INCHES

STD.LGTHS:2", 4", 7",10",

13", 16"22"

2FT

2F

1FT

1⁄2" 1FS

1F

49⁄64"

7⁄8"

5⁄8"11⁄16"

7⁄8"

11⁄16"

3⁄4"

3⁄4" 3⁄4"

SELECT MATERIAL

CODEFROM

PAGE 19

– – – –SPECIFYFLANGE

SIZE,RATING,FACING,

MATERIALONLY IF

DIFFERENTMATERIAL

THANSTEM.

“U”

ORDERING CODE

NOTE: The “T” dimension + 21⁄4" will be the length from the

bottom of the flange to the open end of the well.

Q D

**SERIES1 FT & 2 FT

WELLSWITH 1"FLANGE

WILL HAVETAPER

AS NOTED.

FLANGEMATERIALSTYLE

EXAMPLE: 1F36-10-11⁄2" x 300 RF

.260" — Bore

Q = 3⁄4"

316 Stainless Steel Well — Material“U” = 10"

11⁄2" x 300#RF T316 Flange

TYPE F — Straight StemTYPE FT — Tapered StemTYPE FS — Stepped Stem

Series FFlanged Thermowells

SPECIFY(OTHER)

ZSZIRCONIUM

TSTANTALUM

ORDERING CODESLEEVE MATERIAL

HOW TO ORDER:PLACE ORDERING CODE AS A SUFFIX

FOLLOWING THE FLANGED WELL PART NUMBER.

EXAMPLE: 1F36-10-11⁄2"x 300 RF - TS

Well as above with Tantalum Sleeve.

Sleeves for Series 1F and 2FThermowells

SERIES F AND SLEEVES FOR SERIES 1F AND 2F


– – – –


EXAMPLE: 1V20-13

1" Nom. Pipe — “P” Dim..260" — Bore

Q = 3⁄4" R = 2"

Carpenter 20 — Material“U” = 13"

Series VVan StoneStraight Thermowells

– – – – – –

SPECIFYIN

INCHES

STD. LGTHS:2",4", 7",

10", 13", 16"22"

SELECT MATERIAL

CODEFROM

PAGE 19

27⁄8"

27⁄8"

2"

2"

4V7⁄8"

3V3⁄4".260

7⁄8".385

1V3⁄4"

.385

.260

2V

11⁄2"

Nominal(1.900"DIA.)

1"Nominal(1.315"Dia.)

PIPE SIZE“P”

ORDERING CODE

“U”MATERIALTYPERQBORE

4S7⁄8"

3S3⁄4"

7⁄8" 2S

1S

.385

.260

.385

.260 3⁄4"

1"NOMINAL

(1.315"DIA.)

3⁄4"

NOMINAL(1.050"DIA.)

– – – – – –

SPECIFYIN

INCHES

STANDARDLENGTHS:

21⁄2", 41⁄2 ",

71⁄2", 101⁄2",

131⁄2", 161⁄2",

221⁄2"

SELECT MATERIAL

CODEFROM

PAGE 19

“U”MATERIALTYPEQBORE

ORDERING CODEPIPE SIZE“P”

EXAMPLE: 1S96-101⁄2

3⁄4" Nom. Pipe — “P” Dim.

.260" — BoreMonel — Material

“U” = 101⁄2"

Series SSocket WeldStraight Thermowells

TTHHEERRMMOOWWEELLLLSSSERIES S AND V

Backing flanges for van stone wells are available.Specify as separate item giving flange size, rating and material.


TTHHEERRMMOOWWEELLLLSSTHERMOMETER WELLS — SERIES1H, 2H —

WELD-IN SERIES W — PLUG AND CHAIN OPTION

18

– BBRASS

– SSTAINLESS STEEL

ORDER CODEMATERIAL

A Plug and Chain is available as an option for all thermowells.It is used to keep the bore clean when the thermowell is not in use.Used to keep “test wells” bore clean when not in use.

To Specify:Determine the part number on the basic thermowell selected and add the desired order code shown in the table as a suffix.

EXAMPLE: 3A36 - 10.5 - B

Plug and Chain Option

Series W — Weld-In Thermowell

1H (Mat’l.)

1H (Mat’l.)

15⁄8"

15⁄8"

21⁄2"

21⁄2"1"

NPT1⁄2"

1/2"3⁄4"

NPT1.) Determine process thread required and specify the corre-

sponding part number listed in the “ordering code” column.2.) Replace “(Mat’l.)” with desired material code. Material

codes are listed on Page 29.

How To Order:

Thermometer wells are available in a wide selection ofmaterials. See page 29 for material codes.

Material

Standard wells have either a 3⁄4" or 1" NPT process connection

and a 1⁄2" NPT internal thread. Other thread sizes are available.

Thread Connections

Bimetal thermometers, thermocouples and RTD’s with 1⁄4"

diameter stems and 21⁄2" length.

Application

Limited space thermometer wells for 1⁄4" diameter stems

with 21⁄2" stem lengths.

Series 1H & 2H

ORDERINGCODE

INSERTIONLENGTH

STEMLENGTH

“Q”PROCESSTHREAD

Series 1H & 2H — Limited Space

.765

.625

.765

.625"

4W1.315

3W1.315.260

1.05.385

1W1.05

.385

.260

2W

1"Nominal

3/4"Nominal

PIPE SIZE“P”

ORDERING CODE

“U”MATERIALTYPEQ“P”BORE

SELECT MATERIAL

CODEFROM

PAGE 19

SPECIFYIN

INCHES

ActualDiameter


MATERIALORDER CODE

34 304 Stainless Steel

34L 304L Stainless Steel




36L 316L Stainless Steel





60 Inconel 600

61 Inconel 601

80 Incoloy 800

81 Incoloy 801

24 Aluminum (2024-T4)

23 Brass

18 Carbon Steel (C1018)

20 Carpenter 20

11 Chrome-Moly A182-F11

22 Chrome-Moly A182-F22

86 Cast Iron - Ceramic Coated

87 Cast Iron

98 Copper

92 Hastelloy B

94 Hastelloy C

96 Monel

93 Nickel

21 Phosphor Bronze

99 Tantalum

25 Teflon

26 Titanium

Specify by name Materials not listed

Thermowell Material Ordering Codes

THERMOWELL MATERIAL ORDERING CODES



4S6S

8C8S

10C10S12C

12S

4C

Carbon Steel

Carbon Steel

Carbon Steel

Carbon Steel

Stainless Steel

Stainless Steel

Stainless Steel

Stainless Steel

11⁄8" O.D.

11⁄2" O.D.

11⁄2" O.D.

11⁄8" O.D.

1" O.D.

1" O.D.

1⁄2" O.D.

1⁄2" O.D.

3⁄4" O.D.

11⁄4" NPT

11⁄2" NPT

11⁄2" NPT

11⁄4" NPT

1" NPT

1" NPT

1⁄2" NPT

1⁄2" NPT

3⁄4" NPT

OPTIONCODE

MAXIMUMTUBE O.D.

MATERIAL

OPTIONAL FITTINGS

C98D340-(L)-(X)C30D340-(L)-(X)C98D580-(L)-(X)C30D580-(L)-(X)

C98D916-(L)-(X)C30D916-(L)-(X)

C98D716-(L)-(X)C30D716-(L)-(X)C98D380-(L)-(X)C98D140-(L)-(X)

C30D380-(L)-(X)C30D140-(L)-(X)

C98N340-(L)-(X)C30N340-(L)-(X)C98N580-(L)-(X)C30N580-(L)-(X)

C98N916-(L)-(X)C30N916-(L)-(X)

C98N716-(L)-(X)C30N716-(L)-(X)C98N380-(L)-(X)C98N140-(L)-(X)

C30N380-(L)-(X)C30N140-(L)-(X)

C98 CERAMICC30 CERAMICC98 CERAMICC30 CERAMICSTYLE 3STYLE 2

C98T340-(L)C30T340-(L)C98T580-(L)C30T580-(L)

C98T916-(L)C30T916-(L)3⁄4" 9⁄16" x 3⁄4"

C98T716-(L)C30T716-(L)

C98T380-(L)C98T140-(L)

C30T380-(L)C30T140-(L)

TUBE SIZE*I.D. x O.D. C30 CERAMIC C98 CERAMIC

11⁄4"

1" .

3⁄4"

3⁄4"

3⁄4"

3⁄4" x 1"

5⁄8" x 7⁄8"

7⁄16" x 11⁄16"

3⁄8" x 1⁄2"

1⁄4" x 3⁄8"

STYLE 1NPT**

C98 CERAMICTUBE SIZE*I.D. x O.D. C30 CERAMIC

STYLE 1 STYLE 2 STYLE 3

Stainless Steel

PROCESSTHREAD

HOW TO ORDER:Select the tube size from the table and specify the part numbershown for the desired material (C30 or C98), replacing the (L) and(X) with the required length in inches. If a fitting other than thestandard thread is required, specify by adding the “option code”from the optional fitting table as a suffix to the part number.EXAMPLES: C98 716F-18-8S C30 916F-18-8C* Other tube sizes and fittings are available on special order.** Other thread sizes may be specified using the optional fitting

table above.

C98 340-(L)C30 340-(L)3⁄4" x 1"

C98 580-(L)C30 580-(L)5⁄8" x 7⁄8"

C98 916-(L)C30 916-(L)9⁄16" x 3⁄4"

C98 716-(L)C30 716-(L)7⁄16" x 11⁄16"

C98 380-(L)C30 380-(L)3⁄8" x 1⁄2"

C98 140-(L)C30 140-(L)1⁄4" x 3⁄8"

C98 CERAMICC30 CERAMICPART NUMBERTUBE SIZE*

I.D. x O.D.

WITHOUT FITTING

C98 340F-(L)C30 340F-(L)3⁄4" x 1" 11⁄4" NPT C.S.

C98 580F-(L)C30 580F-(L)5⁄8" x 7⁄8" 1" NPT C.S.

C98 916F-(L)C30 916F-(L)9⁄16" x 3⁄4" 3⁄4" NPT C.S.

C98 716F-(L)C30 716F-(L)7⁄16" x 11⁄16" 3⁄4" NPT C.S.

C98 380F-(L)C30 380F-(L)3⁄8" x 1⁄2" 3⁄4" NPT C.S.

C98 140F-(L)C30 140F-(L)1⁄4" x 3⁄8" 3⁄4" NPT C.S.

PART NUMBERPROCESS*THREAD

WITH DOUBLE THREADED BUSHINGCeramic Protecting Tubes–Primary

Ceramic Protecting Tubes —Secondary

SCT 100 NC-(L)NO COLLAR1" x 13⁄4"

COLLARSILICON CARBIDE

HARDWARE TO CONNECT “SCT100WC” TO HEAD

SCT 100 WC-(L)STYLEI.D. x O.D.MATERIAL PART NUMBER

CERAMIC PROTECTING TUBES – PRIMARY/SECONDARY

CCEERRAAMMIICC PPRROOTTEECCTTIINNGG TTUUBBEE AASSSSEEMMBBLLIIEESS

NPT

L

NPT

LX

NPT

LX

L


8734-(L)UNCOATED

8634-(L)COATED

ORDERING INFORMATION

F10

F34

F12

F14

F18

1.315" x 1.049"

1.050" x .824"

.840" x.622"

.540" x.364"

.405" x .269"

1"

3⁄4"

1⁄2"

1⁄4"

1⁄8" SPECIFY SIZE,

RATING,FACING,

MATERIAL

“X”FLANGE“L”MATERIALSERIES

ORDERING CODEO.D. x I.D. (NOM)**NPT

SPECIFY IN

INCHES

SPECIFY IN

INCHES

SELECTMATERIAL

CODE FROMTABLE ONPAGE 31

Specify “L” in inches.STANDARD LENGTHS:12", 18", 24", 30", 36", 42", 48"

Cast iron tubes are available both coated and uncoated.Coated tubes have a thin ceramic coating which resists wetting of the tube by molten metals with the advantage of longer life in molten aluminum, zinc and lead.

It is recommended that uncoated tubes be dipped frequently in ladle wash or similar material to prolong life.

F1036 - 48 - 11⁄2-150#RF-316s.s. - 42Series/Mat’l. “L” Flange “X”

How To Order:1. Select series number.2. Select material code from

table on page 31 and add to series designation.3. Specify desired “L”

dimension in inches.4. Specify desired flange by size,

rating, facing and material.5. Specify desired “X” dimension

in inches.EXAMPLE:

Cast Iron Protecting Tube

Metal Protecting Tube with Flange

X

L

NPTFlange

L

NPT Internal3/4”

1 O.D. XI.D.

5/8”7/8”


ORDERING CODE

Metal Protecting Tube with Bushings

Metal Protecting Tube


table on page 31 and add to series designation.3. Specify desired “L”

dimension in inches.4. Select desired “P” NPT size

and insert the proper lettercode.5. Specify desired “X” dimension

in inches.EXAMPLE:

B1834 - 24 - K - 18Series/Mat’l. “L” 11⁄4" “X”

NPT


page 31 and add to series.3. Specify desired “L”

dimension in inches.EXAMPLE:

1260 - 18Series/Mat’l. “L”

SPECIFY

D for 1⁄2" NPT

F for 3⁄4" NPT

H for 1" NPT

K for 11⁄4" NPT

M for 11⁄2" NPTB10

B34

B12

B14

B18

1.315" x 1.049"

1.050" x .824"

.840" x.622"

.540" x.364"

.405" x .269"

1"

3⁄4"

1⁄2"

1⁄4"

1⁄8"

SPECIFY IN

INCHES

SPECIFY IN

INCHES

SELECTMATERIAL


“X”“P”“L”MATERIALSERIESO.D. x I.D. (NOM)**NPT

101.315" x 1.049"

341.050" x .824"3⁄4"

12.840" x.622"1⁄2"

14.540" x.364"1⁄4"

18.405" x .269"

1"

1⁄8"

SPECIFY IN

INCHES

SELECTMATERIAL


MATERIALSERIESO.D. x I.D. (NOM)**NPT

“L”ORDERING CODE

* Welded bushings are carbon steel unlessotherwise specified.To specify a 304 s.s. bushing – insert “SS”between the bushing designation and the“X” dimension.EXAMPLE: -HSS8 for a 1" NPT 304 ssbushing with X=8"

** These dimensions are for standard tubesmade with schedule 40 pipes. To specifyschedule 80 or 160 – insert “(80)” or “(160)”between the “Type” and “Material” selectionsin the ordering code table.EXAMPLE: 12(80)36-12, B112(80)34-18-H12or F34(80)34-18-1x300RF-304-12 forschedule 80.

METAL PROTECTING TUBES/TUBES WITH BUSHINGS

NPT

L

NPT

L

X


SCT (SiliconCarbide)

Maximum operating temperature of 3000° F (1649° C).Suggested as primary tube in molten aluminum.Porous* and affords protection from flame cutting. Asecondary tube to provide thermal and mechanicalshock resistance in assemblies using C30 and C98as a primary.

MCT Metal-Ceramic (LT-1)

Maximum operating temperature of 2800° F (1538° C).This tube is a combination of aluminum oxide and chromium. Stable in oxidizing atmospheres to 2200° F.Thermal and mechanical shock characteristics are better than pure ceramic tubes, but an extremetemperature span requires a slow insertion time toallow tube to preheat. Sulphur dioxide, sulphurtrioxide and concentrated sulphuric acids have littleeffect on MCT tubes. Since copper, zinc, lead, brassand ferrous alloys do not “wet” MCT tubes their lifeis longer in such melts, abrasive resistance even at2200° F. Do not use in acid or carbide slags ormolten aluminum.

Maximum operating temperature 3450° F (1900° C)in both oxidizing and reducing atmospheres. Inert tohydrogen, carbon, platinum, rhodium and refractorymetals under most conditions. High thermal con-ductivity for fast temperature response. Being moredense than C30, affords longer life in acids, alkalis,molten metals, molten salts and slags. Imperviousto most industrial furnace gases even at hightemperatures. Recommended for R, S and B typethermocouples.

(C98 Ceramic(99.8% alumina)

Maximum operating temperature of 2900° F (1600° C).Impervious to air to 3000° F, to dry hydrogen andcarbon monoxide to 2550° F. Low rate of thermal

expansion (2.8 x 10-6/° F) enhances thermal shockresistance. Resistance to acid slag is good. Basicslag is fair. Recommended for J, K, N, and E typethermocouples.

C30 Ceramic(Mullite)

alumina (C98 Ceramic). Material selectiondepends upon operating conditions andperformance requirements such astemperature, atmosphere, sensitivityto contamination and others.

Thermo Sensors Corporation ceramictubes are high quality, fine grained,* non-porous tubes. They are imperviousto gases at temperatures near theirmelting point. Materials available rangefrom mullite (C30 Ceramic to high purity

CERAMIC PROTECTING TUBE CHARACTERISTICS

CCEERRAAMMIICC PPRROOTTEECCTTIINNGG TTUUBBEE AASSSSEEMMBBLLIIEESS