Our step-by-step guide to connecting the Spirometer with the PowerLab and LabChart set-up.
- BNC cable.
- USB cable.
- I-Squared-C cable.
- Computer with LabChart Software installed.
- Place the Spirometer next to the PowerLab to prevent thermal drift.
- Connect the Spirometer and PowerLab Units using the I-Squared-C input on the Spirometer and the output on the PowerLab.
- Connect the BNC cable to the signal output on the Spirometer.
- Connect the other end of the BNC cable to one of the channels of the PowerLab.
- Connect one side of the USB cable to the PowerLab and the other to the computer with LabChart.
- Connect the power cable and switch on the PowerLab.
- Connect the tubes from the flow head to the input ports on the front of the Spirometer.
- Launch your LabChart software.
- The Spirometer should be automatically detected by LabChart.
- The Status LED on the PowerLab should turn green.
- Download the Spirometry extension software from the feature manager in LabChart, or from the ADInstruments website.
- Set the number of required channels.
- You can find the Spirometer settings in the dropdown list of the channel it is connected to.
- In the Spirometer dialogue box, you can:
- Set up the range of the input signal
- Set up the required low filters
- Invert the signal if needed
- Once the flow head is ready to be zeroed, click 'Zero' in the Spirometer dialogue box.
- Once you have finished your setup in the dialogue box, click on OK.
- Calibrate flow with the Spirometry extension settings in the dropdown list of the channel it is connected to. This can be done by:
- Using preset values for various flow heads, found in the extension settings.
- Using a calibration syringe to manually inject a known volume, and calculating the conversion factor using the extension settings.
- Your flow channel is now ready to record airflow in liters per second.
- Please see this video if you need guidance on how to calculate other parameters such as minute ventilation and tidal volume.