Xylem WQ770-B TURBIDITY METER - Manual (Page 5)

Global Water
800-876-1172
• globalw.com
- 5 -
a. Battery life is dependent on many variables. Extreme heat and
extreme cold will shorten the life of a battery. A WQ770 in an
environment that has a sustained temperature of 23°C will run 5%
longer than a unit that has a sustained temperature of 0°C. Store your
WQ770 at room temperature and disconnect the battery when not in
use for long periods of time.
b. The Turbidity Meter battery will operate for 15 hours. The meter will
automatically shut off after 6 minutes.
c. The Turbidity Meter comes with a 9V Lithium battery. To replace the
battery, remove the battery compartment cover on the back of the
meter. The battery can be removed using your fingers or gently using
a flat head screwdriver being careful not to damage the battery.
Ensure that the replacement battery is correctly installed with the plus
terminal going to the plus side of the battery compartment.
V. Maintenance
a. Global Water recommends checking the calibration after the first
month of use, then checking every 6 months.
b. The optics of the sensor will develop deposits over time and should be
cleaned once a week. The windows can be cleaned using lint free
cotton swabs and rubbing alcohol.
c. The meter will show the letters BAT in the lower left side of the display
when the battery voltage goes below an acceptable level. See the
Battery Life and Replacement section for more information.
VI. Trouble Shooting
Issue: Meter reading incorrectly