... the relation between pressure,density and liquid level, the liquid level transducers measure the liquid pressure which in ... ~20mA current signal(or standard voltage signal).Feature:1.Range:0~0.6 mH2O....0~500 mH2O2. ... Sealed structure, IP68.3.Accuracy: 0.1% FS, 0.25% FS(standard), 0.5% FS4 ... wires)Power supply12~36(Model 24)VdcStatic accuracy 0.1, 0.25(standard), 0.5%FSZero adjustment≤±0. ...