VT305 
Users Manual 
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Numerical Values ...................................................................................................... 13 
Graphical Values....................................................................................................... 13 
Filter .......................................................................................................................... 13 
How to Save Data ..................................................................................................... 14 
Zero-Point Calibration ............................................................................................... 14 
Connect the Product ...................................................................................................... 15 
Setup for Ventilator Measurements........................................................................... 16 
Setup for Precise Flow Measurements ..................................................................... 17 
Setup for Dusty or Contaminated Gases................................................................... 18 
Setup for High Pressure Gases ................................................................................ 19 
Measurement Data ........................................................................................................ 20 
Store Measurement Data on the Micro-SD Card ...................................................... 20 
How to Connect to the Computer.............................................................................. 20 
How to Read the Data on the Computer ................................................................... 21 
To Make an Excel File with Saved Values ................................................................ 22 
Product Configuration .................................................................................................... 24 
Values Configuration................................................................................................. 26 
Curves Configuration ................................................................................................ 27 
Interface Configuration.............................................................................................. 28 
Trigger Configuration ................................................................................................ 29 
Miscellaneous Configuration ..................................................................................... 30 
How to Setup an Ethernet Connection ...................................................................... 31 
Default Ethernet Setup ......................................................................................... 31 
Configured and DCHP Ethernet Setup................................................................. 34 
O2Sensor ...................................................................................................................... 34 
Activation .................................................................................................................. 34 
Installation................................................................................................................. 34 
Oxygen Sensor Calibration – Air Only....................................................................... 34 
Oxygen Sensor Calibration – O2and Air................................................................... 35 
Measure Respiratory Data ............................................................................................. 37 
General ..................................................................................................................... 37 
Connection to the Respiratory Apparatus ................................................................. 39 
Standard Trigger Values ........................................................................................... 39 
Baseflow ................................................................................................................... 39