LaMotte Tracer ORP Meter - Manual (Page 9)

Troubleshooting
Problem Cause Action
Power on but no
display Batteries Insert batteries
Batteries Verify correct polarity
Batteries Replace batteries
Unstable readings Electrode Immerse electrode more deeply in
sample
Electrode Condition electrode before first use.
Soak in tap water for 10 minutes.
Electrode Remove air bubbles caught under
electrode
Electrode Clean electrode
Electrode Replace electrode
Static charge Wiping electrode Rinse electrode and blot. Do not wipe
electrode
Same readings in
different samples Cracked or broken
electrode Replace electrode. Avoid plunging
electrode into bottom of container and
stir bars.
Display frozen HOLD function Press MODE or turn meter off
Button response Remove batteries (stored data will be
lost)
Steady “
-1 ” display Wait
Reading not stable yet
Replacing the Electrode
The TRACER is shipped with an electrode attached. If the electrode
needs to be replaced, follow these steps for removing and connecting
electrodes.
1. Turn meter off.
2. To remove the electrode, turn the collar counter-clockwise and
remove it.
3. Gently rock the electrode from side to side, pulling it downwards,
until it disconnects from the meter.
4. To attach an electrode, carefully plug the electrode into the meter
socket. Note that the electrode connector is keyed to ensure a
proper connection.
5. Tighten the electrode collar firmly enough to make a good seal. A
rubber gasket will seal the electrode with the meter.
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