Yokogawa PH72 Personal pH/ORP Meter - Manual (Page 18)

IM 12B03D02-01E
2-1
2. Preparation
2. Preparation
2.1 Installing the Batteries
Install the batteries first.
CAUTION
Select a relatively moisture-free location when installing batteries in the meter.
When installing batteries, observe correct polarity (battery orientation). Failure to do so
may damage to the meter.
Remove batteries from the meter if it is to be stored for an extended period of time.
Do not leave dead batteries in the meter. They may leak and cause meter failure or
erratic operation of the meter.
When replacing batteries, replace both batteries at the same time. If only one battery is
replaced, the new battery may discharge into the old battery, which may leak chemicals
and damage the meter.
If the battery box gasket is damaged or dirty then the unit may no longer be waterproof;
replace the gasket in this case.
F020101.eps
Press with
your fingers
Gasket
Batteries
(1) Loosen the screw holding the battery
box cover using a coin or similar
object.
(2) Remove the battery box cover, and
then install the batteries observing
polarity diagram inside.
(3) Make sure the gasket on the inside
rim of the battery box is free of
foreign material.
(4) Put the cover back on. Insert the tabs
on the top of the cover into the slots
at an angle of at least 45
؇ and lower
the cover into position.
(5) Press the both ends of the cover down
with your fingers and tighten the
screw to fix the cover onto the unit
using a coin or similar object.
Note: Do not attempt to tighten further
when you feel resistance before the
cover is fastened in place. Loosen
the screw once and retighten.
45
؇
or more