Flow - Fluke VT650 User Manual

Flow

Airway Flow
Resolution...........................0.01<100 slpm and 
0.1 >100 slpm
Accuracy .............................see Table 9
Frequency Response..........10 % to 90 % rise time <10 ms
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Sample Rate
Dynamic Resistance ..........<2.00 cmH2O @ 60 slpm
Ultra-Low-Flow (VT900)
Range .................................±750 ml/min
Accuracy .............................±1.7 % of rdg or 0.01 slpm
Resolution...........................0.001 lpm
Table 9. Airway Flow Range and Accuracy
Gas
Main Airway Flow
Air, Nitrogen (N2),
±300 slpm
Oxygen (O2)
Argon, Heliox,
±300 slpm
O2 bal He, O2 bal N2
200 Hz
Range Specification
1.7 % of rdg or
0.04 slpm
3.0 % of rdg or
0.08 slpm, typical
Table 9. Airway Flow Range and Accuracy (cont.)
Gas
Carbon Dioxide (CO2),
Nitrous Oxide (N2O), ±150 slpm
O2 bal N20,
Ultra-low Flow (VT900)
Air, Nitrogen (N2),
±0.750 slpm
Oxygen (O2)
Argon ±0.750 slpm
Nitrous Oxide (N2O) ±0.400 slpm
Note: Ultra-low flow that is over range can be detected
as unstable. If this occurs, reduce flow.
Flow Temperature
Coefficient ...............................Add 0.2 % of reading per °C
between 10 °C and 18 °C
Add 0.2 % of reading per °C
between 28 °C and 40 °C
Gas Flow Analyzer
Specifications
Range Specification
3.0 % of rdg or
0.08 slpm, typical
1.7 % of rdg or
0.01 slpm
3.0 % of rdg or
0.02 slpm, typical
3.0 % of rdg or
0.02 slpm, typical
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