Residual Volume Measurement System (RV, FRC, TLV)

The model 17405 provides a rapid and accurate determination of lung Residual Volume for the purpose of body composition analysis. It is based on our new "Tri-Gas" analyzer and uses the method of nitrogen washout.

This technique, when combined with hydrostatic weighing, is considered to be the Gold Standard in body composition determination. Perfect for accurate Residual Volume and FRC Measurements.

May also be used for Total Lung Volume using larger rebreathing balloon.


Tri-Gas Analyzer
    Gas Sampling Rate: 300 ml/min
    Operating Range: 0 - 100% Nitrogen
    Display Resolution: 0.1%
    Display Linearity: 0.5% of reading from 0 - 100% N2
    Rise Time: 10% to 90% approximately 5 sec
    Fall Time: 90% to 10% approximately 5 sec
    Rear Panel Analog Outputs: Separate BNC connectors for O2, N2, CO2.

Residual Volume Test
    Duration of test: 3 - 4 minutes
    Overall Accuracy: +/-5% Menu-driven user interface Backlit LCD display
    Computer Interface: USB
    Auxiliary Connector: analog out

Weight & Dimensions
Electronics Unit Weight: Approx 4 pounds
Electronics Unit Dimensions: 8.25" W X 1.75" H X 10" D
Overall cart Size: 19" W x 44" H x 23" D

Included Accessories: Computer interface, 2 multi-function valves, mouthpiece, filter, power cable, sample line tubing and instruction manual.