H3系列 防爆式差压开关 结构牢固,可靠耐用,专利的独特设计使其能够灵敏地监测低到10英寸水柱(254毫米水柱)的差压,同时承受到1500psig(103bar)的静压。它和其它活塞移动的压力开关不一样,H3系列采用旋转运动移动轴来使设定点不随全压的变化而变化,回差大约为量程的5%。量程弹簧直接和隔膜向连结使摩擦阻力减少到*小,重复精度*佳。转动的大隔膜设计能够维持有效面积进一步降低摩檫力。隔膜后面有垫座,这样不管是高压侧还是低压侧,在静压高到1500psi (103 bar)内都不会受到损害。特别的过量程保护功能还可以防止过度调紧量程螺丝。可选择316不锈钢外壳用于水,水基液体或用于其它恶劣的应用场合。
Wetted Materials: See Ordering page.
Temperature Limit: -4 to 220°F (-20 to 104°C). ATEX: -4 to 194°F (-20 to 90°C).
Pressure Limit: 1500 psig (103 bar).
Enclosure Rating: Standard meets NEMA 4X (IP56); Drain option meets NEMA 3 (IP54). For hazardous use see "Hazardous Location Ratings Chart" on Catalog page.
Switch Type: SPDT or DPDT snap switch.
Electrical Rating: 5 A @ 125/250 VAC, 30 VDC.
Electrical Connections: See Ordering page.
Conduit Connection: 3/4" female NPT.
Process Connection: 1/8" female NPT.
Mounting Orientation: Vertical.
Set Point Adjustment: Internal screw.
Weight: 4 lb 2 oz (2 kg).
Deadband: Approximately 5% of range.
Agency Approvals: ATEX (see "Ratings Chart" on catalog page), CE, CSA, UL.