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16.3.3 Zeroing the IBP transducer
To avoid inaccurate pressure readings, the monitor requires a valid zero. Zero the transducer in accordance with
your hospital policy. The IBP transducer should be zeroed in the following conditions:
â– The IBP transducer, adapter cable or module is reconnected.
â– The monitor restarts.
â– You doubt the readings.
â– The monitor displays the prompt message Zero Required.
To zero the transducer, follow this procedure:
1. Connect the IBP transducer, the IBP adapter cable and the monitor.
2. Turn off the three-way valve (the one near the transducer) to the patient, in order to vent the transducer to
the atmospheric pressure.
3. Zero the transducer by one of the following methods:
â—† Press the Zero hard key on the module.
â—† Select the numeric area (such as the Art numeric area), and then select Zero button.
â—† Select the Zero IBP quick key.
4. After the zero calibration is completed, close the stopcock to the air and open the stopcock to the patient.
Zero calibration may fail in case of pressure fluctuation or pressure exceeding the calibration range. If zero
calibration fails, follow this procedure:
1. Check that the three-way valve (the one near the transducer) is open to the air.
2. Perform zero calibration again. Do not sway the IBP transducer and tubing during zero calibration.
16.4 Measuring ICP Using the Codman ICP Transducer
16.4.1 Zeroing the Codman ICP transducer
You shall zero the Codman ICP transducer (Model: 82-6653) before use. To zero the ICP transducer, follow this
procedure:
1. Connect the ICP transducer, the ICP adapter cable and the monitor.
2. Follow the manufacturer’s instructions to prepare the ICP transducer.
3. Zero the ICP transducer: when you see the message Zero Reference in the ICP numeric area, select the ICP
waveform area or numeric area to enter the ICP menu → select the Zero tab → select the Zero button.
4. Record the zero reference value on the blank area of the ICP transducer for further reference.
If the ICP transducer zero calibration failed or you doubt the zero reference value, perform a zero calibration
again.
16.4.2 Measuring ICP
To perform the ICP measurement, follow this procedure:
1. Zero the Codman ICP transducer. For more information, see section 16.4.1Zeroing the Codman ICP
transducer.
2. Disconnect the ICP transducer and ICP adapter cable. Follow the manufacturer’s instructions to apply the
ICP transducer to the patient.
3. Reconnect the ICP transducer and ICP adapter cable.
4. Check that the zero reference value displayed on the monitor is consistent with that recorded on the ICP
transducer.
â—† Consistent: select Accept.
â—† Inconsistent: input the zero reference value recorded on the ICP transducer, and select Accept.
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