250-AF系列 空氣過濾器用傾斜差壓計(jì)-德威爾Dwyer
Dwyer® Durablock® Series 250-AF Gages are precision machined 1" thick solid acrylic plastic, virtually unbreakable and free of distortion. The fluid bore is precision drilled to ±.0002" to assure life long accuracy. A glass spirit level is built into the body and encapsulated to prevent damage or tampering. The scale is mirror polished chrome plated brass to assure parallax free reading by alignment of the miniscus with its reflection. Safety traps are incorporated in the body to prevent loss of fluid due to pressure surges. Red and green signal flags indicate clearly when a filter change is necessary. Gages are suitable for use in ambient temperatures of -20 to 150°F. Connection fittings are positively sealed by "O" rings but easily removed for zeroing or addition of fluid. Furnished complete with instructions.
Economy Models 451-AF and 452-AF are similar to 250 Series except they are not equipped with over pressure traps. Two A-324 1/4" compression fittings are included with each Gage. Bodies are of 5/8" thick acrylic and scales are mirror polished, epoxy coated aluminum.
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