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What is the accuracy rating for this specific Magnehelic gage
a full replacement is necessary to ensure consistent flame detection
the 1-inch disc can be adapted for surface contact to ensure maximum thermal response
this genuine part offers the exact mounting footprint and terminal configuration required for Goodman
Dwyer Instruments 2004 Pressure Gage 320788-703 What is the accuracy ratingThe Dwyer Instruments 2004 Magnehelic Differential Pressure Gage is the industry standard for monitoring filter resistance, fan pressures, and duct velocity in commercial HVACR systems. Built with a rugged die cast aluminum housing and a 4 inch diameter dial face, this mechanical gauge provides a clear 0 4. 0" w. c. range with 2% accuracy throughout the scale. The frictionless Magnehelic movement utilizes a high precision cobalt magnet and a silicone