The plethysmograph measures both impedance and immittance of body with high accuracy and wide measuring region than current plethysmograph.
仪器采用液晶显示屏并可外接打印机输出测量结果，具有比现行阻抗图仪更宽的动态范围和更高的测量精度。
2
The error signal is detected by the transmittance photoelectric plethysmograph. An electromagnetic solenoid is adopted for use as the hydraulic actuator.