LaMotte 1200 Colorimeter - Manual (Page 19)

The 1200 can be calibrated with two prepared standards. The concentrations of
the standards should be chosen from the low and high ends of the range of the
meter. The low standard must be less than 5% of over range. To calibrate the
meter with two standards, follow steps 1-11 of the calibration procedure for one
reacted sample. Repeat steps 1-11 of the calibration procedure with the second
reacted standard.
•
The calibration procedure should be followed as often as required by
regulations and laws for compliance monitoring.
•
To reset the calibration to the factory calibration: with the meter off, hold
down the
t and push READ. The meter will turn on and the calibration
will be reset.
19
Push the
button again to
memorize the
calibration. The
1200 display will
stop flashing.
Calibration is
complete.
ZERO
Turn the unit off by
holding the
button down for at
least 2 seconds, or
proceed to measure
the test samples
following the
procedure on page
20.
READ
9. 10.
11.
Push and hold the
button for 5
seconds until is
displayed. Release
the button. The
display will flash.
Adjust the display
with the and
buttons until the
value of the standard
is displayed.
ZERO
CAL
I200
••••••••••••••••••
ZERO
COLORIMETER
READ
““ ““ 2.55
I200
••••••••••••••••••
ZERO
COLORIMETER
READ
2.50
I200
••••••••••••••••••
ZERO
COLORIMETER
READ