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Service:Air and non-combustible, compatible gases (natural gas option available). Note: May be used with hydrogen. Order a Buna-N diaphragm. Pressures must be less than 35 psi.Wetted Materials:Consult factory.Housing:Die cast aluminum case and bezel, with acrylic cover, Exterior finish is coated gray to withstand 168 hour salt spray corrosion test.Accuracy:±2% (-HA model ±1) of FS (±3% (-HA ±1.5%) on -0, -100PA, -125PA, -10MM and ±4% (-HA ±2%) on -00, -60PA, -6MM ranges), throughout range at 70°F (21.1°C).Pressure Limits:-20 in Hg. to 15 psig.† (-0.677 bar to 1.034 bar); MP option; 35 psig (2.41 bar), HP option; 80 psig (5.52 bar).Enclosure Rating:IP67.Overpressure:Relief plug opens at approximately 25 psig (1.72 bar), standard gages only. See Overpressure Protection note on Catalog page.Temperature Limits:20 to 140°F (-6.67 to 60°C). -20°F (-28°C) with low temperature option.Size:4" (101.6 mm) diameter dial face.Mounting Orientation:Diaphragm in vertical position. Consult factory for other position orientations.Process Connections:1/8" female NPT duplicate high and low pressure taps - one pair side and one pair back.Weight:1 lb 2 oz (510 g); MP & HP 2 lb 2 oz (963 g).Standard Accessories:Two 1/8" NPT plugs for duplicate pressure taps, two 1/8" pipe thread to rubber tubing adapters and three flush mounting adapterswith screws. (Mounting and snap ring retainer substituted for three adapters in MP & HP gage accessories.)Agency Approval:Meets the technical requirements of EU Directive 2011/65/EU (RoHS II). Note: -SP models not RoHS approved.