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Media Application Table

Ashcroft

®

Duragauge

®

Pressure Gauge

The media being measured must becompatible with the wetted parts of the pressure instrument. To use the chartbelow, locate the media whose pressure is to be measured and select a suitable material from those available. Diaphragm seal information is contained in Bulletin DS-1. This is a simplified chart andassumes the media temperature isbelow 200°F. PLUS! option, throttlingdevices and/or a liquid-filled instrument are recommended in applications with pulsation or vibration. These recommen-dations are only a guide, as service life is dependent on temperature, concentra-tions, catalysts that may be added, orother conditions beyond our control.Consult Stratford, CT customer servicefor specific applications and for any media not listed. More complete corro-sion guide available on our website at www.dresserinstrument.com in theApplication Data Section.
Pressure InstrumentMaterialPressure InstrumentMaterialPressure InstrumentMaterial

Media ApplicationMedia ApplicationMedia Application

Brass or bronzeSteel Stainless steel Monel Diaphragm seals* Brass or bronzeSteel Stainless steelMonelDiaphragm seals* Brass or bronzeSteel Stainless steel Monel Diaphragm seals* Acetone••• Crude Oil (Sour)• Oxalic Acid• Acetic Acid <40%• Crude Oil (Sweet)•• Oxygen (Gas) •• Acetic Anhydride• Ethyl Acetate• Palmitic Acid >99%• Acetylene (Dry)•• Ethylene Oxide >99%••• Phosphoric Acid <80%• Acrolein 100%• Ferric Chloride <40%• Picric Acid <10%• Air•••• Ferric Sulfate <10%• Propane (Dry)••• Alcohol, Ethyl••• Ferrous Chloride <30%• Sea Water (Flowing)• Alum. Chloride >10%• Ferrous Sulfate <50%• Silver Nitrate <70%• Alum. Sulfate 10-50%• Fluorine Gas (Dry)• Sodium Bicarbonate <20%•• Ammonia Gas (Dry)•• Formaldehyde <95%• Sodium Bisulfate <30%• Ammonium Chloride <40%• Formic Acid• Sodium Carbonate <40%•• Ammonium Nitrate <50%• Freons•• Sodium Chromate <60%•••• Ammonium Sulfate <60%• Furfural <10%• Sodium Cyanide•• Aniline>99%• Gasoline• Sodium Hydroxide 99%•••• Sodium Hypochlorite <25%• Beer• Hydrobromic Acid• Sodium Phosphate, Tri <60%••• Benzidine >99%• Hydrochloric Acid• Sodium Silicate <50%••• Benzene <50%•• Hydrofluoric Acid• Sodium Sulfide <50%• Benzoic Acid <70%• Hydrofluosilic Acid• Stannous Chloride <10%• Boric Acid <25%• Hydrogen •• Steam (Use siphon)•••• Bromine (Dry)• Hydrogen Peroxide <50%• Stearic Acid• Butane•••• Kerosene•••• Sulfur Dioxide (Dry) >99%• Butyric Acid <10%• Lactic Acid <70%• Sulfur Trioxide (Dry) >99%• Calcium Chloride <80%• Magnesium Chloride <40%• Sulfuric Acid• Calcium Hydroxide <50%• Mercuric Chloride <60%• Tannic Acid <80%••• Carbon Dioxide•••• Mercury >99%• Tartaric Acid <50%•• Carbon Monoxide >99%•••• Milk• Tin Chloride (ous) <10%• Chlorine (Dry)• Naphtha >99%•••• Toluene >99%•••• Chlorine (Moist)• Naphthalene >99%•• Turpentine >98%•••• Chloroform (Dry)•• Nickel Chloride >99%• Water (Tap)••• Chromic Acid• Nitric Acid <95%• Whiskey• Citric Acid 10-50%•Corn Oil• Nitrogen••••Oleic Acid• Zinc Chloride <25%•Zinc Sulphate <40%•
Over 1000 psi – entire system must be 316 stainless steel. Applicable only to hydrogen.

*

Any standard Bourdon tube material may be used in conjunction with a diaphragmseal, but the gauge selection should take into consideration the corrosive environment in which it is to operate. For diaphragm seals see Bulletin DS-1. Monel and 316 stainless steel are acceptable for oxygen service, provided the instrument has been cleaned for oxygen service and is free from oil. 9