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DIN EN 837-2:1997
Pressure gauges - Part 2: Selection and installation recommendations for pressure gauges
The document only applies to those pressure gauges whose pressure responsive element measuring system is a metal part which deforms under the effect of the pressure measured, as defined in DIN EN 837-1 and DIN EN 837-3. It has been prepared to assist in the selection, installation and use of pressure gauges to ensure that they give satisfactory service for the intended application with the maximum level of safety.
Deutsches Institut für Normung [din]