Bravo pH Monitoring System 13 User Guide
chapter.fm 3/21/16 4:05 pm
5.5 x 7.75 inches (140 mm x 197 mm)
Calibrating Capsules
Calibration is the process of making sure that the capsule is reading pH levels properly.
You must go through calibration for each capsule.
Existing Data
If data exists from a previous study and has not yet been uploaded, you must first do so
before you can start calibration. The record screen shows the message:
Last study data
not uploaded! To upload, connect to PC.
•
To stop calibration and upload the existing data, press
Cancel
. Follow the directions
for your software application. (If you are using AccuView or Reflux software, see
Uploading pH Data on page 28.) When the data is uploaded, start the new study
again by selecting
Calibrate
from the main menu.
•
To continue (overwrite the existing data without uploading it), press
Next
and then
press
Yes
to confirm that you want to overwrite the last study data. The message
Clearing data...
appears, and then the recorder continues with the calibration
process.
Starting Calibration
If the message about existing data does not appear, begin calibration as follows:
1. Select
Calibrate
from the main menu.
The current settings (
Date/Time
,
# of Capsules
, and
Study Duration
) appear on the
screen. Press
OK
to confirm or
Cancel
to return to the main screen.
This message appears:
Place pH Capsule #1 in pH 7.01 and press Start to
calibrate.
2. Position the calibration stand on a level surface and place a clean calibration tube
into each of the four holders. Place the recorder on the calibration stand (Figure 7).
3. Check the expiration date on the buffer fluid bottles (next to on the label).
4. Fill each of the four tubes in the calibration stand halfway (enough to be able to
cover the capsule when it is inserted) as follows. The buffer solutions should be at
room temperature (20–25 °C, 68–77 °F).
Note
If you need to change the number of capsules or the study duration,
select Settings from the main menu and make the necessary
changes.
Note
The backlight stays on during calibration, except during the 10-minute
pre-soak stage.
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