Hanna Instruments HI 93703 - Manual (Page 9)

9
NOTE: Wipe the cuvet thoroughly with a lint-
free tissue (HI 93703-70) before in-
serting into the measurement cell.
The cuvet must be completely free of
fingerprints and other oil or dirt, par-
ticularly in the area where the light
goes through (approx. the bottom
2 cm/1").
• Place the cuvet into
the cell and check
that the notch on the
cap is positioned se-
c u r e l y i n t o t h e
groove.
• The mark on the
cuvet cap should
point towards the
LCD.
• Press the READ key
and the LCD will dis-
play a blinking “SIP”
(Sampling in Pro-
cess). The turbidity
value will appear af-
ter approx. 20 sec-
onds.
51
LOGGING
MICROPROCESSOR
TURBIDITY METER
LOGGING
MICROPROCESSOR
TURBIDITY METER
HI 93703-11
VIEW VIEW
STO STO
CLR CLR
GLP GLP
CAL CAL DATE DATE
READ READ
ALT ALT
OFF
ON
16
To check the date of last calibration, simply
press the GLP/CAL key. Press again to
toggle between date and time.
To make sure that the meter is calibrated, take
a measure of a standard solution.
The instrument can be calibrated at two or three
points and a monthly calibration is recom-
mended.
CALIBRATION PROCEDURE
• Turn the meter on and
wait for the display to
show "----".
• Press the ALT & CAL
buttons together. The
"CAL" message will
blink on the display 3
times. The meter then
enters the calibration
mode, displaying "0.00
cl" and prompting the
user to insert the 0.00
FTU standard.
• Place the 0.00 FTU stan-
dard in the cuvet holder
• Press CAL, SIP and
CL will start blinking
LOGGING
MICROPROCESSOR
TURBIDITY METER
LOGGING
MICROPROCESSOR
TURBIDITY METER
HI 93703-11
VIEW VIEW
STO STO
CLR CLR
GLP GLP
CAL CAL DATE DATE
READ READ
ALT ALT
OFF
ON
CALIBRATION
0.00
cl
sip
cl