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VT650/VT900
Users Manual
Low Pressure
The low-pressure port is a dual-port connection
consisting of a (+) positive and a (-) negative
pressure port.
The differential pressure range is ±160 mbar.
Use this pressure measurement for any
pressure differential or gauge pressure in the
given range.
Ultra-Low Pressure (VT900)
The ultra-low pressure sensor measures gauge
pressure in the range of 0 mbar to 10 mbar. Use
this pressure range for accurate, very low
pressure measurements.
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Ultra-Low Flow (VT900)
The Analyzer (VT900 only) has ultra-low flow
(±750 ml/min) bi-directional flow measurement
capability. The flow measurement is for
accurate, high resolution, static low flow
measurements, not for ventilator waveforms.
The flow sensor uses the heat transfer method
to measure air flow. Use the ultra-low flow to
measure many types of low flow meters.
Barometric Pressure
The Analyzer makes barometric pressure
measurements. The barometer reads absolute
pressures from 8 psia to 18 psia. The Analyzer
also uses the barometer in the automatic gas
corrections for airway flow measurements.
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