6
7
C. BATTERY REPLACEMENT
1. Replace the battery when the low battery icon is displayed in
the left corner of LCD. In-spec measurements may be made
for several hours after the low battery indicator appears.
2. Slide the battery cover away from the instrument, remove the battery
and replace with a 9V battery (alkaline or heavy duty type).
3. Close the battery cover.
D. TROUBLE SHOOTING
If you pH meter malfunctions, follow these steps to pinpoint the problem.
1. Replace the battery when the low battery icon is displayed.
2. Check that the electrode is correctly connected to the BNC socket.
3. Determine if the problem is the pH meter or the electrode by:
A. Substituting a known working electrode for the one in use.
- Or -
B. Remove the electrode and turn the unit on. Next, insert a wire or
paper clip into the center hole of the BNC electrode socket while
touching the other end of the wire to the outer metal ring. If the
meter is functioning, the pH reading should be stable and between
6.00 and 8.00.
4. If your meter displays a reading during step 3, replace the electrode. If
the meter does not display a reading after following all trouble shooting
steps, return it to Sper Scientific under the terms of the warranty.
