Bravo pH Monitoring System 32 User Guide
chapter.fm 3/21/16 4:05 pm
5.5 x 7.75 inches (140 mm x 197 mm)
Recorder Troubleshooting
Following is a list of problems you may encounter while operating the recorder. If you
cannot resolve the problem with the solution provided, or you do not see the problem
listed, contact your product customer support.
Problem Cause Solution
Initial Startup
Recorder displays message:
ERROR
General recorder problem. Contact customer support to
arrange servicing for recorder.
Recorder displays message:
REPLACE BATTERY
Battery voltage low. Contact customer support to
arrange battery replacement
for recorder.
Recorder is locked (no buttons
work) and displays message:
Last study data not uploaded!
To upload, connect recorder to
PC.
A study is done but the data
has not yet been uploaded
from the recorder.
Connect the recorder to the PC
and follow the instructions on
the recorder screen.
Calibration
Recorder displays message:
Calibration done. To use,
press Cancel. To start
new, press Yes.
Calibration has already been
performed but the calibration
data has not yet been used in a
study.
Perform the study with this
calibration data or redo
calibration.
Recorder displays message:
Charge battery.
Recorder battery is below 30%
capacity.
Connect recorder to charger.
Allow to fully recharge (may
take several hours).
Recorder displays message:
Capsule 1 Calibration Error
(various) Press
Help
to display error
message.
Error 1: Unexpected pH
value
Capsule sends what appears
to be a pH value, but it is
outside expected range (pH
7.01 to 1.07).
For each of these calibration
messages, try:
1. Replace buffer solution.
2. Try calibrating a new pH
capsule.
If error persists, contact
customer support.
Error 2: Slope too low Difference in mV between
signals read by capsule during
calibration (that is, difference
between pH 7.01 and pH 1.07
solutions) is lower than
expected.
Error 3: Slope too high Difference in mV between
signals read by capsule during
calibration is greater than
expected.
Error 4: Signal unstable Recorder cannot detect stable
signal from capsule within 60
seconds during calibration.
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