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5.4.2.2 Correspondence with Hardware Components
The following figure shows how the sampling lines of the sensors are actually connected on
the monitor board.
5.4.3 Description
By using the valves-test tool, you can troubleshoot the problems related to:
Zero points of the sensors
Sampling line connection of the sensors
Calibration data of the sensors
Opening state of the inspiratory valve
Opening states of the PEEP safety valve and PEEP proportional valve
5.4.3.1 Problems Related to Zero Points of the Sensors
By using the valves-test tool, you can easily detect if the zero points of all the pressure and
flow sensors are normal.
To diagnose the zero points of the sensors:
1. Disconnect all gas supplies and make sure that the actual values of the sensors are “0”.
2. Check the A/D counts of the sensors in the valve-test tool menu, which are the zero
points of the sensors.
3. If the zero point of one sensor is outside of the normal range, it indicates that the
monitor board is faulty. You need to replace the board.
You can also detect the zero points of the sensors by referring to 4.2.4Check the Sensor
Zero Point.
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