General Tools and Instruments PWM301 - Manual (Page 8)

3)a. If the water is pure, then the meter will display the low
conductivity values, typically. For example the distill
water conductivity value will approx. less than 10 uS.
b. If the water contain the impurity, then the meter will
show the high conductivity typically.
c. From the different water's conductivity value, user can
juge the water quality condition.
( Due to drinking mineral water contain the mineral
material, when measure the mineral water if the meter
display the high conductivity value, it is normal.)
4-2 Check the filter condition
1)Power on the meter by pushing the " Power On Button "
( 3-3, Fig. 1 ).
2)Hold the meter by hand and immerse the " Sensing
Electrode " ( 3-6, Fig. 1 ) immersed wholly into the
measured solution. Shake the " Sensing Electrode " to
let the electrode's internal air bubble drift out from the
sensing Electrode, refer to Fig. 2.
3)First check the reading values ( uS ) for the water that is
not made the treatment ( not via the FILTER ), then
record the reading value, ref. Fig. 3
Fig. 3
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