应用
密封罐内的液位测量,尤其适用于低温技术
过滤器监测
检测和控制泵
适用于非高粘度不易结晶的,无固体颗粒的气体和液体介质
功能特性
差压测量范围:0 ... 4 kPa至0 ... 400 kPa
工作压力(静压)高达5 MPa
两侧过压安全保护均高达5 MPa
可缩放测量范围(可调比为1 : 3.5)
可选:带工作压力显示的紧凑型阀组
描述
该型号差压表品质***、结构紧凑,并且坚固耐用,主要用于液化气罐中的液位检测。
该型号差压表仅通过6个不同的测量传感器,便可满足低温技术中所有常见尺寸储罐的液位测量要求。由于各个测量传感器的测量范围有较大的重合,所以根据所测量的不同气体(如Ar、O2、N2或CO2),可270°全量程范围内调整压力表的设定值,使其满足测量要求。该型号压力表的量程也可以进行调节,且调节时不影响零位。
此外,该型号压力表拥有机械显示,可选配4 ... 20 mA电气输出信号同时进行校准。
该型号压力表还配备法兰安装的工作压力表阀组(可选),可同时测量液位和工作压力。而且,仪表内液位和工作压力的开关电接点,以及工作压力的变送器可以现场改装。
过程连接件的标准中心距离为37mm。通过法兰安装的转接头,也可以根据客户要求将距离改为31mm或54mm。
Models 712.15.160 and 732.15.160 Nominal size in mm 160 Accuracy class 2.5 Option: ■ 1.6 ■ 1.0 Scale ranges Measuring cell 140 mbar: Setting range 0 … 40 mbar to 0 … 140 mbar Measuring cell 280 mbar: Setting range 0 … 80 mbar to 0 … 280 mbar Measuring cell 560 mbar: Setting range 0 … 160 mbar to 0 … 560 mbar Measuring cell 1,130 mbar: Setting range 0 … 320 mbar to 0 … 1,130 mbar Measuring cell 2,300 mbar: Setting range 0 … 650 mbar to 0 … 2,300 mbar Measuring cell 4,000 mbar: Setting range 0 … 1,150 mbar to 0 … 4,000 mbar Scale Single scale Option: Individual scale design Zero point setting By means of adjustable pointer Overload safety and max. working pressure (static pressure) Either side max. 50 bar Connection location Lower mount (radial) Process connection ■ 2 x G ¼, female, centre distance 37 mm ■ 2 x ¼ NPT, female, centre distance 37 mm others on request Option: Adapter for process connection, see page 6 Wetted materials Measuring cell flanges Model 712.15: Copper alloy CW614N (CuZn39Pb3) Model 732.15: Stainless steel 316L Compression spring Stainless steel 1.4310 Separating diaphragm NBR Transmission parts Stainless steel 1.4301 and 1.4305 Non-wetted materials Case Stainless steel Bayonet ring Stainless steel Movement Stainless steel Dial Aluminium, white Pointer Adjustable pointer, black aluminium Window Polycarbonate (PC) Ingress protection per IEC/EN 60529 IP65 Mounting According to affixed symbols ⊕ high pressure, ⊖ low pressure
Non-Ex version: Models 712.15.160 and 732.15.160 optionally with model 891.44 1) Ex version: Models 712.15.160 and 732.15.160 with model 892.44 1) Ambient -40 … +60 °C with oxygen -40 … +80 °C -40 ... +60 °C for temperature class T6 and T5 -40 ... +80 °C for temperature class T4 Medium -40 … +60 °C with oxygen -40 … +80 °C -40 … +60 °C with oxygen -40 ... +60 °C for temperature class T6 and T5 -40 ... +80 °C for temperature class T4