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| | | Bonded strain gauge technology, developed by Gefran from the very start, is one of the most widely used methods for building pressure sensors due to its versatility, reliability and precision. The measuring element (resistance) consists of an extremely thin sheet of metal alloy, chemically engraved by means of a printed circuit process. It is bonded to the steel diaphragm after precise positioning of the strain gauge, guaranteeing perfect bonding on the surface and absolute linearity. | | |
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| | | • Silicon piezoresistive technology Thanks to this technology, Gefran sensors can have very low measurement ranges (0-50 mbar) with high precision and overpressure capacity. Gefran's silicon piezoresistive technology involves the complex and delicate installation of the solid state chip (Wheatstone bridge) on the metal support and installation of the metal isolation diaphragm with filling of the body (under vacuum) with silicon oil. | | |
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| | | For more information on these technologies, visit the "TECHNOLOGIES" page on our website www.gefran.com | | |
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| | | Intrinsic safety (ATEX) | | |
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| | | Gefran offers ATEX-certified pressure transmitters for applications in potentially explosive atmospheres. ATEX directive 94/9/CE refers to electrical and mechanical devices and to protection systems that can be adopted in potentially explosive atmospheres (inflammable gases, vapours and dusts). Series XSA and XPSA are certified II1G EEx ia IIC T5 and T6, and cover measurement ranges from 0...250 mbarg to 0...1000 barg. | | |
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| | | Pressure ranges | | |
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| | | Gefran sensors can measure the pressure of fluids and gases in all industrial applications. | | |
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| | | Gefran offers a complete line for measurement ranges from 0...50 mbar to 0...5000 mbar for relative and absolute pressure. | | |
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