Pressure gauge for anhydrous hydrogen chloride medium
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I would like to ask which type of pressure gauge should be used for anhydrous hydrogen chloride media?
Anhydrous hydrogen chloride (HCl) is a highly corrosive gas that requires careful selection of materials. When selecting a pressure gauge for use in an anhydrous hydrogen chloride medium, the following important factors need to be considered: 1. Material: Materials with good corrosion resistance should be used, such as Hastelloy, Monel alloy, PTFE coating, or other materials with chemical resistance properties. 2. Sealing: The sealing parts of the pressure gauge must also be made of corrosion-resistant materials to prevent hydrogen chloride gas from leaking, thereby ensuring measurement accuracy and safety. 3. Model: A pressure gauge suitable for anhydrous hydrogen chloride media and the intended pressure range should be selected. Explosion-proof, stainless-steel casing, and corrosion-resistant pressure gauges can be considered. 4. Safety: Given the hazardous properties of anhydrous hydrogen chloride, pressure gauges should be equipped with adequate safety measures such as safety valves and burst disks to prevent hazards in case the pressure exceeds safe limits. 5. Standards and Certification: Choose pressure gauge products that meet international or **standards and have passed relevant safety certifications, to ensure their quality and reliability. 6. Other parameters: Select the gauge range, accuracy, connection type (threaded or flanged), display type (digital or analog), etc., based on the actual application requirements. Therefore, when making a purchase, it is necessary to communicate with the manufacturer about the specific application and environment in order to select the appropriate pressure gauge. In some cases, special pressure gauges may be required to accommodate the corrosiveness of anhydrous hydrogen chloride and other specific requirements. .
A gauge with a PTFE diaphragm can be used, or a mercury gauge can also be used
Can a pressure gauge made of S31603 material be used?
Dry hydrogen chloride has weak corrosivity and can be used for a short period of time; however, it is recommended to use materials with good corrosion resistance in instrument systems, as even slight exposure to chloride ions can cause the instruments to become inaccurate.
This pressure gauge is used in the zeroing device after a rupture disc fails