Fluke Biomedical VT Mobile - Manual (Page 49)

5-1
Chapter 5
Measuring Pressure
Introduction
The Analyzer detects a Low-Pressure Adapter connection to the Flow/Low-Pressure Port.
With the Low-Pressure Adapter disconnected, pressing L under WAVEFORM
SCREENS or OTHER MEASUREMENTS toggles between high pressure and airway
pressure. With the Low-Pressure Adapter connected, pressing L successively selects
high pressure, low pressure, or airway pressure.
With a pressure connection, the measurement is equivalent to a gauge measurement. For
gauge pressures, the measurement is relative to the ambient (barometric) pressure.
Do not use either the High-Pressure or Low-Pressure Adapter for fluid measurement. If
fluid enters into the pressure measurements connections of the Analyzer, evacuate the
fluid before storage and before you make any pressure measurements. You can evacuate
the fluid by connecting a 100 cc syringe directly to the pressure measurement connection
and then pulling back the syringe to create a vacuum.
Review “Making a Measurement More Accurate” in Chapter 3 for a discussion of the
uses of the Oxygen Sensor, Temperature and Relative Humidity Sensor, and barometric
pressure readings in enhancing measurement accuracy. Chapter 3 also discusses proper
warm-up and zeroing procedures to compensate for sensor drift.