产品名称:490系列手持数字差压表产品型号:490用途：用于测量与316L不锈钢兼容的液体或气体特性：7种显示单位范围：0-100/200/350/700KPa精度：&plu***n;0.5%FS（15-25°C）;1%FS（0-15和25-40°C）过压报警：过压声光报警电源：9V电池选型表:型号英制范围公制范围***大压力490-10-15.000psi0-100kPa30psi(2.7bar)490-20-30.00psi0-200kPa60psi(4.13bar)490-30-50.00psi0-350kPa120psi(6.89bar)490-40-100.00psi0-700kPa200psi(13.78bar)490-50-500.0psi0-3450kPa1000psi(68.9bar))