LaMotte ATQ Digital Series Water Softener Demo Kit - Manual (Page 20)

20
TDS • CODE 5-0080 • Dual Range TDS Pocketester
BEFORE FIRST USE: Soak electrodes for a few minutes in alcohol to remove oils. Rinse well with distilled
water and shake dry.
CALIBRATION
Use a calibration standard between 900 ppm and 5,000 ppm for low range testing. LaMotte conductivity stan-
dard #6354 (989 ppm TDS) is most commonly used.
(To Be Done Once a Month)
+
INC Key
DEC Key
negative
batteries
positive
plastic
ribbon
Figure #1
Pour ½” to 1”
of a Calibration
Standard into 2
containers, and
tap or deionized
water into a
third container.
Open battery compartment lid
(end with lanyard loop). The
two white buttons are Increment
(INC) and Decrement (DEC)
calibration keys.
Rinse electrode
in water. Then
rinse in fi rst container
of standard, then dip
into the second.
Press in INC or DEC keys to
adjust reading to match the
calibration standard value.
After 3 seconds without a key
press, the display fl ashes 3 times,
then shows “ENT”. The tester
accepts calibration value; returns
to measurements mode.
Replace battery cap.
Rinse the electrode in
the water and proceed
with test procedure.
1. 2. 3.
4. 5. 6.
7.
Turn the meter on, and wait
several minutes
to allow the
display to stabilize.