Battery Replacement - Extech Instruments PH210 User Manual

Battery Replacement
The 9V battery that powers the instrument requires replacing when the battery icon flashes on
the display. To replace the battery follow the steps below:
1.
Disconnect the electrode/probe from the instrument.
2.
Open the rear battery compartment using a screwdriver to remove the two Phillips head
screws that secure the compartment.
3.
Carefully remove the old battery from the compartment lid chamber and gently unsnap
the battery's terminals from the wired (red/black) connectors.
4.
Install a new 9V battery by snapping the battery terminals onto the wired connectors
(observing correct polarity) and inserting the battery into the compartment lid chamber.
5.
Install the compartment lid chamber into the meter housing and secure with the two
screws.
Disposal: Do not dispose of this instrument in household waste. The user is obligated to take
end‐of‐life devices to a designated collection point for the disposal of electrical and electronic
equipment.
Electrode Maintenance and Troubleshooting
Most measurement difficulties are caused by the electrode. Careful handling and proper storage of
the electrode will increase measurement accuracy and electrode life.
Electrodes should be rinsed often to remove all traces of storage solution, process medium, or
previous test solution.
Electrode Storage
The electrode should be stored in a soaker bottle or wetting cap filled with pH4 buffer. Never
store an electrode in distilled or deionized water as this will cause migration of the fill solution
from the electrode.
Electrode Cleaning
The type of electrode coating that occurs over time will determine the cleaning method. Soft
coatings can be removed by vigorous stirring or by using a squirt bottle. Organic chemical
coating (hard coatings) should be chemically removed. Only in extreme cases should the bulb be
cleaned mechanically.
800.561.8187
Never dispose of used batteries or rechargeable batteries in household waste.
As consumers, users are legally required to take used batteries to appropriate
collection sites, the retail store where the batteries were purchased, or wherever
batteries are sold.
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