Thermowell Material Selection Guide

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Process Fluid	Concentration	Temperature	Well Material
Acetate Solvents	All		Monel
Acetic Acid	10%	20ƒC	304SS
Acetic Acid	50%	100ƒC	316SS
Acetic Acid	99%	100ƒC	Monel
Acetic Anhydride			Monel
Acetone	All	100ƒC	304SS
Acetylene			304SS
Alcohols	All		304SS
Aluminum		Molten	Cast Iron
Aluminum Acetate	Saturated		304SS
Aluminum Sulphate	All	100ƒC	316SS
Ammonia	All	20ƒC	304SS
Ammonium Chloride	All	20ƒC	316SS
Ammonium Fluoride	25%	65ƒC	Hast.C
Ammonium Nitrate	All	20ƒC	304SS
Ammonium Sulphate	5%	20ƒC	304SS
Ammonium Sulphate	All	100ƒC	316SS
Aniline	All	20ƒC	304SS
Amyl Acetate	All	150ƒC	Monel
Asphalt		120ƒC	304SS
Barium Carbonate		20ƒC	304SS
Barium Chloride	Saturated	20ƒC	Monel
Barium Chloride	Aqueous		316SS
Barium Hydroxide			C.Stl.
Barium Sulphide			304SS
Barium Sulphite			Nichrome
Baroacic Acid	5%		304SS
Beer		20ƒC	304SS
Benzaldehyde			304SS
Benzene, Benzol		100ƒC	304SS
Benzoic Acid	All	100ƒC	316SS
Black Liquor			Hast.C
Bleaching Powder	15%	20ƒC	Monel
Borax	All	100ƒC	Brass
Bordeaux Mixture	All	100ƒC	304SS
Boric Acid	All	200ƒC	316SS
Bromine	Wet	20ƒC	Tant.
Bromine	Dry	20ƒC	Tant.
Butadiene		70ƒC	Brass
Butane		200ƒC	C.Stl.
Butylacetate			Monel
Butyl Alcohol			Copper
Butylenes			C.Stl.
Butyric Acid		20ƒC	304SS
Butyric Acid		100ƒC	Hast.C
Calcium Bisulfite		20ƒC	316SS
Calcium Chlorate	Dilute	65ƒC	304SS
Calcium Bicarbonate			304SS
Calcium Carbonate			Hast.B
Calcium Chloride	All	100ƒC	Hast.C
Calcium Fluoride			304SS
Calcium Hydroxide	20%	100ƒC	304SS
Calcium Hydroxide	50%	100ƒC	Hast.C
Calcium Hypochlorite	15%	20ƒC	Monel
Carbolic Acid	All	100ƒC	316SS
Carbon Dioxide	Dry		C.Stl.
Carbon Dioxide	Wet		C.Stl.
Carbon Tetrachloride	All	20ƒC	Monel
Carbonic Acid		100ƒC	304SS
Chloracetic Acid	All	150ƒC	Hast.C
Chlorex Caustic			316SS
Chlorine Gas	Dry	20ƒC	C.Stl.
Chlorine Gas	Moist	20ƒC	Hast.C
Chloroform	Dry	100ƒC	Monel
Chromic Acid	5%	20ƒC	304SS
Chromic Acid	50%	100ƒC	Hast.C
Cider	All	150ƒC	304SS
Citric Acid	15%	20ƒC	304SS
Citric Acid	All	100ƒC	Hast.C
Coal Tar		Hot	304SS
Coke Oven Gas		20ƒC	Alum.
Copper Nitrate	All	150ƒC	316SS
Copper Sulphate	All	150ƒC	316SS
Corn Oils		100ƒC	316SS
Cottenseed Oil			C.Stl.
Creosols		100ƒC	304SS
Cyanogen Gas			304SS
Dowtherm			C.Stl.
Epson Salt			304SS
Ether		20ƒC	304SS
Ethyl Acetate			Monel
Ethyl Chloride		20ƒC	304SS
Ethylene Glycol	All	100ƒC	304SS
Ethylene Oxide		20ƒC	C.Stl.
Ethyl Sulphate		20ƒC	Monel
Ferric Chloride	1%	20ƒC	316SS
Ferric Chloride		100ƒC	Tant.
Ferric Nitrate		100ƒC	Tant.
Ferric Sulphate	All	150ƒC	Tant.
Fluorine		100ƒC	Hast.C
Fluosilicic Acid		20ƒC	Carp.20
Formaldehyde	40%	100 ƒC	316SS
Formic Acid	All	150ƒC	316SS
Furfural		200ƒC	316SS
Galic Acid	5%	65ƒC	Monel
Gasoline		20ƒC	304SS
Glucose		20ƒC	304SS
Glycerine		100ƒC	Brass
Glycerol		20ƒC	304SS
Hydrobromic Acid	All	100ƒC	Hast.B
Hydrochloric Acid	All	100ƒC	Tant.
Hydrocyanic Acid	All	100ƒC	304SS
Hydrogen Chloride	Dry	250ƒC	304SS
Hydrofluoric Acid	60%	100ƒC	Hast.C
Hydrogen Peroxide		100ƒC	304SS
Hydrogen Sulphide	Dry	100ƒC	316SS
Iodine		20ƒC	Hast.C
Kerosene		150ƒC	304SS
Lactic Acid	5%	65ƒC	316SS
Lactic Acid	10%	100ƒC	Tant.
Lacquer		100ƒC	316SS
Latex		100ƒC	C.Stl.
Lime Sulphur			PVC
Linseed Oil		20ƒC	304SS
Magnesium Carbonate		65ƒC	304SS
Magnesium Chloride	5%	20ƒC	Monel
Magnesium Chloride	5%	100ƒC	Nickel
Magnesium Hydroxide	All	20ƒC	304SS
Magnesium Nitrate		65ƒC	304SS
Magnesium Oxide	All	20ƒC	304SS
Magnesium Sulphate	40%	100ƒC	304SS
Mailic Acid		100ƒC	316SS
Mercury	100%	350ƒC	C.Stl.
Methane		20ƒC	C.Stl.
Mercuric Chloride	10%	20ƒC	Hast.C
Methyl Chloride	Dry	20ƒC	C.Stl.
Methylene Chloride	All	100ƒC	304SS
Milk		80ƒC	304SS
Molasses		150ƒC	304SS
Muriatic Acid		20ƒC	Tant.
Naphta		20ƒC	304SS
Natural Gas		20ƒC	304SS
Neon		20ƒC	304SS
Nickel Chloride		20ƒC	304SS
Nickel Sulphate		100ƒC	304SS
Nitric Acid	50%	100ƒC	304SS
Nitric Acid	65%	100ƒC	316SS
Nitric Acid	100%	100ƒC	Tant.
Nitrobenzene		20ƒC	304SS
Nitrous Acid		20ƒC	304SS
Oleic Acid	All	200ƒC	316SS
Oleum		20ƒC	316SS
Oxalic Acid	5%	20ƒC	304SS
Oxalic Acid	10%	100ƒC	Monel
Oxygen		20ƒC	C.Stl.
Oxygen	Liquid		304SS
Palmitic Acid	All	200ƒC	316SS
Pentane			304SS
Petroleum Ether			304SS
Phenol	All	100ƒC	316SS
Phosphoric Acid	10%	20ƒC	316SS
Phosphoric Acid	85%	100ƒC	Hast.C
Picric Acid		20ƒC	304SS
Pot.Permanganate	5%	20ƒC	304SS
Potassium Bromide		20ƒC	316SS
Potassium Carbonate	20%	100ƒC	316SS
Potassium Chlorate		20ƒC	304SS
Potassium Chloride	20%	20ƒC	316SS
Potassium Chloride	20%	100ƒC	Monel
Potassium Hydroxide	30%	100ƒC	316SS
Potassium Nitrate	40%	100ƒC	316SS
Potassium Nitrite	20%	20ƒC	416SS
Potassium Sulphate	30%	100ƒc	316SS
Potassium Sulphide	10%	100ƒC	304SS
Potassium Sulphite	30%	100ƒC	304SS
Propane		150ƒC	C.Stl.
Pyrogallic Acid			304SS
Quinine Bisulphate	Dry		316SS
Quinine Sulphate	Dry		304SS
Resin			316SS
Salicylic Acid			Nickel
Salommoniac		20ƒC	Monel
Sea Water		20ƒC	Monel
Shellac			304SS
Silver Chloride		20ƒC	Carp.20
Silver Nitrate		100ƒC	304SS
Sodium Bicarbonate	All	65ƒC	316SS
Sodium Bisulphate	20%	100ƒC	Hast.B
Sodium Bisulphite	20%	100ƒC	Hast.C
Sodium Carbonate	20%	100ƒC	316SS
Sodium Chloride	30%	20ƒC	316SS
Sodium Chloride	30%	100ƒC	Monel
Sodium Chromate	All	100ƒC	316SS
Sodium Fluoride	5%	20ƒC	Hast.B
Sodium Hydroxide	30%	100ƒC	316SS
Sodium Hypochlorite			Tant.
Sodium Nitrate	40%	100ƒC	304SS
Sodium Nitrate	20%	20ƒC	304SS
Sodium Peroxide	Fused		304SS
Sodium Phosphate	10%	100ƒC	C.Stl.
Sodium Silicate	10%	100ƒC	C.Stl.
Sodium Sulphide	10%	100ƒC	316SS
Sodium Sulphite	30%	100ƒC	304SS
Sodium Sulphate	30%	100ƒC	316SS
Steam			304SS
Stearic Acid			316SS
Sulphur		Molten	304SS
Sulphur	Wet		316SS
Sulphur Dioxide		250ƒC	316SS
Sulphur Trioxide	Dry	250ƒC	316SS
Sulphuric Acid	All	100ƒC	Hast.B
Sulphuric Acid	Fuming	185ƒC	Carp.20
Sulphurous Acid	20%	20ƒC	316SS
Tannic Acid	40%	20ƒC	Hast.B
Tar			C.Stl.
Tartaric Acid		20ƒC	304SS
Tartaric Acid		65ƒC	316SS
Tin		Molten	Cast Iron
Tinan. Tetrachloride	All	20ƒC	316SS
Toluene			304SS
Trichloracetic Acid	All	20ƒC	Hast.B
Trichlorethylene	Dry	150ƒC	Monel
Turpentine		20ƒC	316SS
Varnish		65ƒC	C.Stl.
Vegetable Oils			304SS
Vinegar			304SS
Water	Fresh		Copper
Whiskey, Wine			304SS
Xylene			Copper
Zinc		Molten	Cast Iron
Zinc Chloride	All	100ƒC	Hast.B
Zinc Sulphate	All	100ƒC	316SS

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